Have you ever wondered how an EP800 compares to an EP850, or an iPad charger? I have. Reading the comments on the forum there is a lot of subjective opinion, but little in the way of facts. With this in mind I decided to make a little app to measure how long it takes the phone to charge from 20% to 80%.
20% was chosen as the start because readings below this have a high uncertainty
80% was the ceiling because the Xperia shows down charging somewhere around 90% to protect the battery.
I wanted to ensure I was measuring the charger at its peak output.
So far I have done 3 runs:
EP800 (rated 850ma) with normal USB cable, 8845 seconds (est 427ma)
HTC B250 (rated 1000ma) with normal USB cable, 7910 seconds (est 477ma)
Unbranded (rated 1500ma) with "data" cable 3120 seconds (est 1211ma)
My current suspicion is that the charger is not as important as we have previously believed, it could be all about the cable. I will run some more tests over the next week using the same charger with different cables.
In the meantime, if anyone wants to give it a go, my app is available here
https://play.google.com/store/apps/details?id=com.vexedbadger.chargertimer
(once Google gets around to approving it)
and my latest results are here
http://vexedbadger.com/?page_id=97
But I will keep this thread updated until I reach a satisfactory conclusion.
I am also eagerly anticipating the EP851. I wonder just how good its boost charge feature is. Could it simply be a normal 2A charger with pins 2 and 3 bridged?
If you do give the app a try, post your results here.
-----------------------------------------------------
For newcomers to this thread I believe I have made an important discovery. I ran a test using a HTC B250 1A charger. I did it first using a normal USB cable. I then repeated it using a USB charge cable (2 wires, no data lines) and got these results
Data Cable, 7910 seconds, est 477 ma
Charge Cable, 3530 seconds, est 1071ma
In other words the cable you chose to run between your charger and the phone is absolutely critical in determining the charge speed. Here I have observed over a 100% speed increase.
Using the supplied EP800 (850ma)
Data Cable, 8845 seconds, est 417ma
Charge Cable, 5170 seconds, est 731ma
Again, a huge difference.
Oh, and the BlackBerry Playbook charger is a beast.
I have just done a run with the BlackBerry Playbook charger HDW 34625 (2000ma).
20-80 in 2875 seconds. That means approx 1314ma output. An estimated 0-100 in 1hour 20 minutes.
I have a new charger of choice : )
Nice find, but is it good to charge the battery like that ?
I suspect you're correct OP.
I charge mine with a 1A iPod charger with an x10 cable + 8M Extension cable(sockets only on one side of the room), with that charging is pretty slow. Tried it without the extension but it wasnt noticeably faster. Then one time I used a 15cm USB Micro cable from an unknown device on the front USB port of my desktop(500ma maybe, probably less) and it was insanely fast.
So yeah, think its the cable.
LahiruRD said:
Nice find, but is it good to charge the battery like that ?
Click to expand...
Click to collapse
My guess is that Sony know a thing or two about batteries. They control the amount of charge passed to the battery. A very conscious decision is made at 90% to reduce the power flow to the battery. I am happy to chuck as much power as I can at it.
Also remember that Sony are about to release the EP851, a high speed charger.
If I remember correctly if you connect only the power cables within a USB cable the maximum you will get from most devices is 500ma. If you connect all 4 cables as a regular USB data cable, the 2 devices communicate and then the phone will ask for maximum current from the USB host. This could be several amps. This is why there is a variations in charging times. Try several different cable on the same port, then try them all again charging from different hosts, ie. OEM USB charger, computer usb port, other USB chargers.
Sent from my LT26i using xda premium
defsix said:
If I remember correctly if you connect only the power cables within a USB cable the maximum you will get from most devices is 500ma. If you connect all 4 cables as a regular USB data cable, the 2 devices communicate and then the phone will ask for maximum current from the USB host. This could be several amps. This is why there is a variations in charging times. Try several different cable on the same port, then try them all again charging from different hosts, ie. OEM USB charger, computer usb port, other USB chargers.
Sent from my LT26i using xda premium
Click to expand...
Click to collapse
I think you are close top the answer there. The USB 2.0 spec says 500ma per port. This spec was written long before charging smartphones via generic USB cables became the norm. Some manufacturers now offer high ampage ports on the motherboards. I know Apple does, my aBit one does and a few gigabit ones do.
The phone tries to detect if it is being charged from a computer USB port where it is capped at 500ma, or from a power supply that supports more than this. There are two conventions that I know of. Apple puts a resistor between pins 2 and 3 (the data pins). IF this resistor is present hen the device charges at full power. HTC (and a few others) rely solely on pins 2 and 3 being bridged. I think this is the USB standard as well. Some batter apps will tell you if the detected charger is in AC (high ampage) or USB (capped) charge mode. The speed difference is pretty dramatic.
Some cables come with pins 2 and 3 pre-bridged. They are no good for syncing but great for charging. I am running some tests with one now.
Interesting app, I have a bunch of random USB chargers and such floating around. I use as my standard charger the 850, but I have wondered if I can get better charge from the piles of other chargers floating around.
I also have a BlackBerry bold charger (direct connection to phone via fixed USB cable) do you think that could perform better? I guess I will test it out first.
Thanks again for your useful apps! I used the nfc one and love it
Sent from my LT26i using XDA
I wonder why no smartphone now uses USB3.0
Allows maximum 5A and 1.5A when communicating+charging.
richteralan said:
I wonder why no smartphone now uses USB3.0
Allows maximum 5A and 1.5A when communicating+charging.
Click to expand...
Click to collapse
Yes, I'm asking the same question
I'd love to charge my XS really fast via my USB 3.0 port
Sent from my LT26i using XDA
richteralan said:
I wonder why no smartphone now uses USB3.0
Allows maximum 5A and 1.5A when communicating+charging.
Click to expand...
Click to collapse
5 Amps? Wow, that would be 25W put into a battery so you have a smoke machine as well ;-)
Multi-purpose charger
Pezo said:
5 Amps? Wow, that would be 25W put into a battery so you have a smoke machine as well ;-)
Multi-purpose charger
Click to expand...
Click to collapse
yeah 5A maximum....
I think 1.5A~2A is more than enough for now comparing the mere 500mA USB2.0 provides.
Pezo said:
5 Amps? Wow, that would be 25W put into a battery so you have a smoke machine as well ;-)
Multi-purpose charger
Click to expand...
Click to collapse
I have a usb3 pci card on order. I will post some test results when it does, but that will probably be June. In the meantime I am seeing a very noticeable difference using a charge cable. To the poster with the blackberry charger, I think that will leave your Sony charger standing
BigPhil said:
I have a usb3 pci card on order. I will post some test results when it does, but that will probably be June. In the meantime I am seeing a very noticeable difference using a charge cable. To the poster with the blackberry charger, I think that will leave your Sony charger standing
Click to expand...
Click to collapse
I have a USB 3.0 port, will do some tests on charging time between my USB 3.0 and USB 2.0 port
Will post the results as soon as I have them
I have just ran a test using my HTC 250 with a charge cable. THis is a charger I have previously tested with a normal data cable
Data Cable, 7910 seconds, est 477 ma
Charge Cable, 3530 seconds, est 1071ma
In other words the cable you chose to run between your charger and the phone is absolutely critical in determining the charge speed. Here I have observed over a 100% speed increase. Will update the first post with these findings.
XS in for repair but gonna do this with my x10 now for ****s and giggles.
5 Amps?
U mean volts...
Usb 3.0 is max 900mA = 0.9 Amps.
Efe64 said:
5 Amps?
U mean volts...
Usb 3.0 is max 900mA = 0.9 Amps.
Click to expand...
Click to collapse
Battery Charging Specification 1.2[12]: released in December 2010. Several changes and increasing limits including allowing 1.5A on charging ports for unconfigured devices, allowing High Speed communication while having a current up to 1.5A and allowing a maximum current of 5A.
richteralan said:
Battery Charging Specification 1.2[12]: released in December 2010. Several changes and increasing limits including allowing 1.5A on charging ports for unconfigured devices, allowing High Speed communication while having a current up to 1.5A and allowing a maximum current of 5A.
Click to expand...
Click to collapse
So having a current up to 1.5 A or maximum current of 5A, which one is it?
My guess is that the second one meant volts.
Sent from my LT26i using Tapatalk
FenrirMX said:
So having a current up to 1.5 A or maximum current of 5A, which one is it?
My guess is that the second one meant volts.
Sent from my LT26i using Tapatalk
Click to expand...
Click to collapse
No. The second one means 5A, if you bothered to read the specification whitepaper.
And my post explains clearly the difference between 1.5A and 5A current:
1.5A for "UNCONFIGURED DEVICES", and "HIGH SPEED COMMUNICATION WHILE HAVING A CURRENT UP TO 1.5A"
5A is the MAXIMUM ALLOWED CURRENT.
Related
So my charger met with an untimely demise. I am unable to get my hands on a replacement one at the moment.
I am currently using my computer's USB port which as you will know doesn't give quite enough juice. I have seen a microusb charger with 5V and 2A. Will this do a job (and also not get rid of the message that i am drawing more juice than the battery is getting)?
I use the charger that came with my Evo 4g. It needs to sit overnight, but it charges to green.
milomak said:
So my charger met with an untimely demise. I am unable to get my hands on a replacement one at the moment.
I am currently using my computer's USB port which as you will know doesn't give quite enough juice. I have seen a microusb charger with 5V and 2A. Will this do a job (and also not get rid of the message that i am drawing more juice than the battery is getting)?
Click to expand...
Click to collapse
No.
The reason for the strange shape USB lead HTC have is that it gives 9V and 1.7A - 5V isn't going to cut it, it will charge but ever so slowly and if you try to charge whilst using it you'll probably find it doesn't, it just discharges more slowly.
If I were to take an old wall wart I have here that is 9V and 2A and wire a standard micro USB cable to it, would that work to charge my flyer quickly? In other words is the strange connector necessary or just the 9V and 2A?
Sent from my PG41200 using Xparent Purple Tapatalk 2
bsoplinger said:
If I were to take an old wall wart I have here that is 9V and 2A and wire a standard micro USB cable to it, would that work to charge my flyer quickly? In other words is the strange connector necessary or just the 9V and 2A?
Sent from my PG41200 using Xparent Purple Tapatalk 2
Click to expand...
Click to collapse
NO, because the fast charge requires the special connector on the HTC power cord , a micro-usb will not allow the Flyer to draw the high current.
DigitalMD said:
NO, because the fast charge requires the special connector on the HTC power cord , a micro-usb will not allow the Flyer to draw the high current.
Click to expand...
Click to collapse
so an adaptor with a usb slot and using the usb cable would work?
milomak said:
so an adaptor with a usb slot and using the usb cable would work?
Click to expand...
Click to collapse
If you're using the HTC-specific microUSB cable, the adaptor would have to provide the correct amount of power (9V and 1.7A). Most usb power adaptors do not provide the adequate amount. A little while back, I made the mistake of taking just my phone usb adaptor to charge everything on a trip out of the country for nearly two months. It worked great for everything except for my View. Even though I had the HTC-specific usb cable for the View, it was still like charging via a computer usb port. It would get the job done if I left it all day or all night, but it took forever to charge.
I really would try to track down an OEM charger. Even if you find a usb adaptor that puts out the right amount of power, it still might not provide the short amount of charging time that the OEM charger does. It should theoretically, but many users have had charging time woes when using anything but the OEM charger.
DigitalMD said:
NO, because the fast charge requires the special connector on the HTC power cord , a micro-usb will not allow the Flyer to draw the high current.
Click to expand...
Click to collapse
No it doesn't. A member of my site took the OEM charger, wired a 90 degree micro USB port to it, charges at full speed.
Sent from my Transformer TF101 using Tapatalk 2
Volts and Amps - PowerFlask
From the posts on this subject it seems that the Powerflask 13000 mAh powerbank I bought today and which charges at 5.3 volt with a 1amp and 2.5 amp port won't properly charge my flyer?
Can I safely use the 2.5amp port or should I rather stick to the 1amp port.
Any advice would be much appreciated.
Thanks
Maffs,
Maffs said:
From the posts on this subject it seems that the Powerflask 13000 mAh powerbank I bought today and which charges at 5.3 volt with a 1amp and 2.5 amp port won't properly charge my flyer?
Can I safely use the 2.5amp port or should I rather stick to the 1amp port.
Any advice would be much appreciated.
Click to expand...
Click to collapse
Folks on here have mentioned that the device (and other tablet/smartphone devices) will only draw the amount of current (amps) it needs. So using a charger with a higher amp rating is not a concern (in theory).
But I think others have debated this, and even made claims of higher volt/amp rated chargers damaging their devices (however anecdotal).
In any case, from the responses on this thread, it appears that any charger that doesn't have HTC's proprietary connector that they used for the Flyer, will charge the tablet very slowly. I just plugged my Flyer into a microUSB charger the other day (just got back from a trip, and my stock charger was still packed), and it charged extremely slowly. It was slower than I remembered it being. It was plugged in for maybe 4 hours, and only increased the charge by 10 or 15%.
PowerFlask Volts and Amps
Thanks for the feedback, much appreciated.
I ran a quick test and connected the Flyer to the battery pack.
The flyer charged from 76% to 84% in 30 minutes . I realise that such a short charge isn't a proper test but it looks promising.
I used the 1amp port and will as you cautioned avoid the 2.5 amp port.
Maffs
I noticed a lot of people want a fast charger for the Note. This charger is for the Touchpad. I have this and it works really well. It charges faster than the OEM charger that came with the Note.
Not to mention, it is on sale right now for less than $5. Go grab one. From past experience, I used this at 15% battery life and charged for an hour and I was back over to 80%.:victory:
http://www.shopping.hp.com/en_US/ho.../FB341AA?HP-TouchPad-Power-Charger&aoid=35252
Is the usb cable that comes with it the same as the note takes?they don't show a pic of the other end and is it a charge only cable?If yes and yes I'm a gonna get one.Thanks
technut said:
Is the usb cable that comes with it the same as the note takes?they don't show a pic of the other end and is it a charge only cable?If yes and yes I'm a gonna get one.Thanks
Click to expand...
Click to collapse
Yes, it is a micro USB cable. One end is USB and other is micro USB. The cable length is longer than most phone cables. I haven't measured it, but from my plug to my desk, I still have excess cable compared to the original one from the phone.
Thank you, getting one!
This have been discussed hundreds time before....
That 1amp is the output of the charger which forwards the current to kernel of the device... NOTE can only intake 1 amp current... ( remove your battery and read the dam sticker :thumbup
Even though you will supply 2 3 4 5 amp... The maximum in would be 1 amp ONLY...
SECONDLY, micro usb cables have a restriction of carrying current... They cannot pass more than 1 amp current successfully... Therefore galaxy tab series does not come with micro usb slots....
Lastly my recommendation would be NOT to waste money on any other chargers...
Noted by the BEAST!!
dx.varun said:
This have been discussed hundreds time before....
That 1amp is the output of the charger which forwards the current to kernel of the device... NOTE can only intake 1 amp current... ( remove your battery and read the dam sticker :thumbup
Even though you will supply 2 3 4 5 amp... The maximum in would be 1 amp ONLY...
SECONDLY, micro usb cables have a restriction of carrying current... They cannot pass more than 1 amp current successfully... Therefore galaxy tab series does not come with micro usb slots....
Lastly my recommendation would be NOT to waste money on any other chargers...
Noted by the BEAST!!
Click to expand...
Click to collapse
It has been discussed, but it DOES charge faster than a conventional 1amp charger. If you don't have the charger and have nothing to compare with, then I don't think you can say it does not work.
Go check FCC about the charge. Also, the cables provided DOES carry a 2amp charge. Our note can handle fast charging but throttles down to a slower charging rate after 80%.
having a micro usb slot or not have a micro usb slot has nothing to do with the current it can handle.
Ipads and Iphones have the same connector but yet one has a 1amp charger and the other a 2amp charger.
deliriousbb said:
It has been discussed, but it DOES charge faster than a conventional 1amp charger. If you don't have the charger and have nothing to compare with, then I don't think you can say it does not work.
Go check FCC about the charge. Also, the cables provided DOES carry a 2amp charge. Our note can handle fast charging but throttles down to a slower charging rate after 80%.
having a micro usb slot or not have a micro usb slot has nothing to do with the current it can handle.
Ipads and Iphones have the same connector but yet one has a 1amp charger and the other a 2amp charger.
Click to expand...
Click to collapse
Firstly, I have tried to use with a 2amp charger that came with my SGT P1000.. NO DIFFERENCE...
SECONDLY, PULL OUT BATTERY AND READ!
Google for micro usb cable max output... You will get your answers...
Noted by the BEAST!!
dx.varun said:
This have been discussed hundreds time before....
That 1amp is the output of the charger which forwards the current to kernel of the device... NOTE can only intake 1 amp current... ( remove your battery and read the dam sticker :thumbup
Even though you will supply 2 3 4 5 amp... The maximum in would be 1 amp ONLY...
SECONDLY, micro usb cables have a restriction of carrying current... They cannot pass more than 1 amp current successfully... Therefore galaxy tab series does not come with micro usb slots....
Lastly my recommendation would be NOT to waste money on any other chargers...
Noted by the BEAST!!
Click to expand...
Click to collapse
deliriousbb said:
It has been discussed, but it DOES charge faster than a conventional 1amp charger. If you don't have the charger and have nothing to compare with, then I don't think you can say it does not work.
Go check FCC about the charge. Also, the cables provided DOES carry a 2amp charge. Our note can handle fast charging but throttles down to a slower charging rate after 80%.
having a micro usb slot or not have a micro usb slot has nothing to do with the current it can handle.
Ipads and Iphones have the same connector but yet one has a 1amp charger and the other a 2amp charger.
Click to expand...
Click to collapse
Well its $5, which is not worth this discussion, I'll gladly give this money even for the stock samsung charger.
i_max2k2 said:
Well its $5, which is not worth this discussion, I'll gladly give this money even for the stock samsung charger.
Click to expand...
Click to collapse
Agreed! A good charger for cheap.
dx.varun said:
Firstly, I have tried to use with a 2amp charger that came with my SGT P1000.. NO DIFFERENCE...
SECONDLY, PULL OUT BATTERY AND READ!
Google for micro usb cable max output... You will get your answers...
Noted by the BEAST!!
Click to expand...
Click to collapse
You don't have to get your panties in a twist. Rather than just read forums and assume the worst of everything try it for yourself. I've tried both and it is faster. Just trying to help my fellow Note users to get the best out of their phones.
btw, what are you screaming about pull out the battery and read? you tell me what you want us to know. RATED: 3.7V; 1500mA... WOW ok that proves your point...sigh:silly:
dx.varun said:
This have been discussed hundreds time before....
That 1amp is the output of the charger which forwards the current to kernel of the device... NOTE can only intake 1 amp current... ( remove your battery and read the dam sticker :thumbup
Even though you will supply 2 3 4 5 amp... The maximum in would be 1 amp ONLY...
SECONDLY, micro usb cables have a restriction of carrying current... They cannot pass more than 1 amp current successfully... Therefore galaxy tab series does not come with micro usb slots....
Lastly my recommendation would be NOT to waste money on any other chargers...
Noted by the BEAST!!
Click to expand...
Click to collapse
As an HP TouchPad owner, I can confirm that the cable provided with the charger are 'special'. My TP will not charge with any other MicroUSB cable connected to the official charger, the same cables which won't charge the TP will charge the Note. (I also own the HP touchstone dock, which the TP spends most of it's life sitting on.)
deliriousbb said:
It has been discussed, but it DOES charge faster than a conventional 1amp charger.
Click to expand...
Click to collapse
I have four different wall chargers, including two of this HP barrel adapter (one that came with the TouchPad, one that came with the Touchstone). With the supplied cable, it does charge the TouchPad very quickly. From webOS, the net charge rate is about 1.6 A with the screen on, so probably close to 2 A coming out the USB port.
However, when you plug a Note into this charger, the Note will still only draw 1 A. I have other AC chargers that are also able to supply 1 A to the Note, so in that respect this HP charger isn't anything special. However, it is only $5, which is a good deal.
---------- Post added at 11:39 PM ---------- Previous post was at 11:14 PM ----------
pTeronaut said:
My TP will not charge with any other MicroUSB cable connected to the official charger, the same cables which won't charge the TP will charge the Note.
Click to expand...
Click to collapse
I've found that the microUSB cable that comes with the Note, when paired with the HP TouchPad's AC charger, will supply 2 A. At least, that's what the OS reports: /sys/devices/platform/usb_gadget/current-mA shows "2000". Plugging the TouchPad into the Note's AC charger shows a value of "900". Plugging it into my laptop's USB port drops that value down to "500", as expected.
I bought two a week ago off Amazon for $10 each. $5 each with free shipping is a steal. I picked up three more. Thanks for posting this deal. I get 1A charging with either the stock charger or TP charger. I like to have a few extra chargers to sprinkle around at home or work (for my Note and the other devices I own that charge off USB.... including a TP).
deliriousbb said:
Yes, it is a micro USB cable. One end is USB and other is micro USB. The cable length is longer than most phone cables. I haven't measured it, but from my plug to my desk, I still have excess cable compared to the original one from the phone.
Click to expand...
Click to collapse
When you charge your phone using this HP microUSB cable, do you have issue with NO DEEP SLEEP when unplugging the Note from the charger?
There has been issues reported in XDA where, depending on the USB cables used to charge the Note (connected to computer OR power charger), if you unplug the Note, it will not go DEEP SLEEP, causing significant power drain.
This does NOT happen when the Note is charged using the cable that came with the Note.
Download Current Widget from the play store. Add widget to home screen and you will realize that your phone is not charging any more than 1 amp as designed.
Try the usb out from your pc and you will see about half an amp.
Sent from my SAMSUNG-SGH-I717 using xda premium
I have the galaxy tab brick charger the HP touch pad charger and my note charging brick....the touchpad charger works faster...but I feel like it doesn't get fully charged..seems to die faster?. I used the galaxy tab brick...slow to charge warms my phone up nicely...I'd stick with the original note charger.
Sent from my SAMSUNG-SGH-I717 using xda premium
lanwarrior said:
When you charge your phone using this HP microUSB cable, do you have issue with NO DEEP SLEEP when unplugging the Note from the charger?
There has been issues reported in XDA where, depending on the USB cables used to charge the Note (connected to computer OR power charger), if you unplug the Note, it will not go DEEP SLEEP, causing significant power drain.
This does NOT happen when the Note is charged using the cable that came with the Note.
Click to expand...
Click to collapse
I charge my Note overnight using my Touchpad's MicroUSB cable plugged into the Samsung charger, and I don't experience any difference in power drain.
Where is that post from the guy who put all these petty arguments to rest with scientific tests of all the various options and results??
Good lord people it's a charger for a phone .. no need to get so heated!
(unlike my stock charger.. which gets very heated!)
great price!!!
ordered 3 of them
the price is way cheaper than just a single micro usb cable shipped from other stores
i have 3 already
1 at work, 2 for home.
definitely faster than OEM. I charge overnight, no issues. had for around 5-6 months now. and i can use the phone while charging.
fact is that it DOES charge faster.
i recommend it
WOW***
Great price I bought 2!
When ever I drive, I have my phone hooked up to my Escort Red Line radar detector and my car's stereo via bluetooth (both). In order for me to use the radar detector effective, I need to have GPS and Blueooth enabled. This is a HUGE SUPER OMG battery drainer for my amaze. 20 minutes drive kills about 35% of the phone's power. My radar detector offers a slot to charge my phone BUT it still drains, not enough juice flowing in. Someone said it is because it's probably a .5amp.
So I am running a extension from the 12v lighter that's in the trunk to the front of my car. Amazon has a generic 2.1amp for 3 bucks.
http://www.amazon.com/Premium-Heavy...121&sr=8-1&keywords=htc+amaze+car+charger+amp
But on ebay, I found the original HTC car charger for 15 bucks which is a 1amp.
http://www.ebay.com/itm/HTC-Amaze-4...918506?pt=PDA_Accessories&hash=item27c867022a
What do you guys recommend? My logic says go for the 2.1amp, the phone will draw as much as it needs from it.
The 1amp.
Anything higher you'll damage the phone or the battery.
A wall plug power supply or a usb supply is 5.0v/1amp.
The 2.1 amp is probably 1 amp per port. Although it does not seem to specify.
F9zSlavik said:
What do you guys recommend? My logic says go for the 2.1amp, the phone will draw as much as it needs from it.
Click to expand...
Click to collapse
Right!:good:
---------- Post added at 09:23 AM ---------- Previous post was at 08:41 AM ----------
soundping said:
The 1amp.
Anything higher you'll damage the phone or the battery.
A wall plug power supply or a usb supply is 5.0v/1amp.
Click to expand...
Click to collapse
That means a higher capacity battery (more current NOT MORE VOLTAGE) will damage the phone?!!!!
Totally wrong!
A higher current will not damage the phone. A higher voltage will do it!
Please do not mix the current with voltage!
Voltage is same 5 Volts (±5%) for these “USB like” applications (1A or 2.1A power supply our case )They use USB socket/connector but usually only pin 1 and 4 (+ and-)
Regular computer USB port can supply max 0.5-0.9 A depending on version.
For battery charging devices the current can go to 5A.
Higher voltage will trip a warning window telling you to disconnect and use official HTC equipment.
The phone monitors input voltage to protect the equipment.
nyc_tdi said:
That means a higher capacity battery (more current NOT MORE VOLTAGE) will damage the phone?!!!!
Totally wrong!
A higher current will not damage the phone. A higher voltage will do it!
Please do not mix the current with voltage!
Voltage is same 5 Volts (±5%) for these “USB like” applications (1A or 2.1A power supply our case )They use USB socket/connector but usually only pin 1 and 4 (+ and-)
Regular computer USB port can supply max 0.5-0.9 A depending on version.
For battery charging devices the current can go to 5A.
Click to expand...
Click to collapse
and to add to that... unless you take the charger apart and short pins 2 and 3, it will only ever draw 500mA, as it assumes that it is hooked up to a regular powered USB port... I have bought multiple car charger usb adapters, and I have taken all of them apart and soldered the 2nd and 3rd pins together... otherwise charge time = forever, and sometimes it won't even charge if you have wifi or data/gps/bluetooth all going at once...
I recently got an Amaze and am generally happy with it. The biggest problem I have right now is finding the right car charger for it because the car charger I previously used (a 1A monoprice car charger) doesn't give it enough charge. I have been reading through the forums and some has been saying that if the charger is not working properly, it will recognize it as charging via USB rather than AC. In my case, the phone seems to be reading it as charging through AC, but there still doesn't seem to be enough current going through it. The phone will only charge if NOTHING is going on (i.e. screen's off, no GPS, etc.). I've been using CoPilot GPS and it draws the battery like crazy. Anyone has any idea as to which car charger would work properly with the Amaze such that I'll be able to charge (or at least maintain the charge) while using it as a GPS? Do I need to go up to a 2.1A charger?
I would look for a 4-5 star rated 2.1a car charger on Amazon.
Just read through the comments and feedback and you'll find one that's right for you.
I prefer the USB charger base itself and then using the OEM cable that came with the Amaze.
It seems to charge faster with that cable, at least to me anyway.
Remember though if it's rated 2.1a but has two USB slots that 2.1a will be cut in half if used to charge two different devices.
Hope this helps.
I couldve sworn we talked about this months ago. Let me see if I can find the thread.
nguyendqh said:
I would look for a 4-5 star rated 2.1a car charger on Amazon.
Just read through the comments and feedback and you'll find one that's right for you.
I prefer the USB charger base itself and then using the OEM cable that came with the Amaze.
It seems to charge faster with that cable, at least to me anyway.
Remember though if it's rated 2.1a but has two USB slots that 2.1a will be cut in half if used to charge two different devices.
Hope this helps.
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you won't get the full 2.1a unless you usee a charge only cable or modify the charger as I stated above...
I ended up getting a 2.1A car charger and a USB charge only cable, and it's working perfectly. When I have the screen on full brightness and doing navigation with Co-Pilot GPS, my phone's no longer losing charge and is actually charging. The combo also works with my tablet as well.
blast0id said:
and to add to that... unless you take the charger apart and short pins 2 and 3, it will only ever draw 500mA, as it assumes that it is hooked up to a regular powered USB port... I have bought multiple car charger usb adapters, and I have taken all of them apart and soldered the 2nd and 3rd pins together... otherwise charge time = forever, and sometimes it won't even charge if you have wifi or data/gps/bluetooth all going at once...
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This is damn helpful! So THAT is why when driving and using gps or whatnot I would always lose more battery even on charger.. So basically I can just solder the middle 2 pins together to trick it into thinking it is being powered like a home charger? No chance it will hurt anything I assume?
Silentbtdeadly said:
This is damn helpful! So THAT is why when driving and using gps or whatnot I would always lose more battery even on charger.. So basically I can just solder the middle 2 pins together to trick it into thinking it is being powered like a home charger? No chance it will hurt anything I assume?
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I have done this to every single one of my USB car chargers... not a single issue...
I've previously been able to charge my phones (a droid Charge and the S3) with the USB plug in car with out any problems. It was slower than the A/C charger, but got the job done. But recently, I noticed that the S4 was taking forever to add any charge to the battery when plugged into the car's USB (Its a 2012 Ford Focus with My Ford Touch). I tested the USB line with the "Galaxy Current Charging" App and saw it was only registering 460 mAh (which is the same as when the phone is unplugged). I also tested my cigarette lighter charger which showed 860 mAh. (BTW, I tested the USB cord using my 2 Amp stock S4 A/C charger and it showed 1900 mAh, so I don't think there is anything wrong with the USB cord, itself.)
So, is there a problem with using the standard USB plug in our cars to charge the S4?
Thanks in advance,
Rich
richs10 said:
So, is there a problem with using the standard USB plug in our cars to charge the S4?
Thanks in advance,
Rich
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If you're really getting 860ma, you should be OK. The problem is that most 12v car adapters end up delivering about half that current. As you've already figured out, the S4 can accept up to about 2000ma (or 2A), but only when using a 5V/2A adapter (like the one that comes w/the device) AND only when using a compatible cable (use a non-stock cable with the AC adapter and you'll probably see more like 950ma than 1900).
You might want to try this Motorola auto charging cable http://www.amazon.com/gp/product/B000S5Q9CA/ref=wms_ohs_product?ie=UTF8&psc=1 . It's rated at about 1A, which is about half the level that the S4 can accept, but still pretty good. I haven't measured the exact output, but I can tell you that it's faster than any other car charger I've owned before.
You may also want to search online for an adapter that can achieve closer to 2A.
Andy:
I have that exact Motorola cigarette lighter charger and it works fine. My problem is trying to charge the phone in the car using the car's usb plug and a 'usb to micro usb' cord. That is where I have run into the problem with the S4. I could do this with my older phones, but the usb plug in the car only seems to supply the 460 mah with the S4. Any ideas why?
richs10 said:
Andy:
I have that exact Motorola cigarette lighter charger and it works fine. My problem is trying to charge the phone in the car using the car's usb plug and a 'usb to micro usb' cord. That is where I have run into the problem with the S4. I could do this with my older phones, but the usb plug in the car only seems to supply the 460 mah with the S4. Any ideas why?
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Because the usb spec it wasdesigned under limits it to a maximum of 500 mA. It is a given that charging will be excruciatingly slow at that low of a current draw if it even charges at all.
Sent from my SCH-I545 using Tapatalk 4 Beta
richs10 said:
Andy:
I have that exact Motorola cigarette lighter charger and it works fine. My problem is trying to charge the phone in the car using the car's usb plug and a 'usb to micro usb' cord. That is where I have run into the problem with the S4. I could do this with my older phones, but the usb plug in the car only seems to supply the 460 mah with the S4. Any ideas why?
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There's a product review on Amazon, where the reviewer provides a pretty good summary that might help explain. He claims that if the device does not 'recognize' the charging source with certainty, it may default to 500ma to prevent potential damage to the charge source (which could be e.g., a PC). The recommendation seems to be to use a special charging cable that would demonstrate to the device that a low-current source is not connected.
(here's an excerpt)
"...The USB power spec is for 0.5 Amps at 5 Volts... or 2.5 Watts. This was great up until the last couple years when devices have gotten really power hungry, particularly smartphones and tablets and to a lesser extent dedicated GPS's. Some of these devices use over 2 Amps, particularly the tablets like the iPad (or in my case the HP Touchpad).
Manufacturers of these devices therefore had a dilemma. If they had their devices pull more than 0.5 Amps, they risked damaging the power source, which could be a computer, that was only prepared to source 0.5 Amps. Thus the manufacturers have used tricks to determine whether their device is connected to an unknown source, at which point they purposely only draw 0.5 Amps, or to the dedicated charger that was provided with the device, where they can draw all the power they need.
There seem to be two common tricks used. The first is to short the two data-wires together in the charger. This is what most non-Apple devices do. Since a computer or older device wouldn't have done this, the device can assume it is safe to draw all the power it needs..."
In a subsequent discussion about the review, one of the commenters went on to recommend this charging cable - note that, per above, it's a 'shorted' cable, so it can only be used for charging (not data xfer). You might want to give it a try: http://www.amazon.com/gp/product/B003VYBCAY/ref=cm_cd_asin_lnk
That will not work if the source itself is limited to 500mA. The shorted data pins on the cable only allow the PMIC to draw a higher current if the source is capable of providing it.
Sent from my SCH-I545 using Tapatalk 4 Beta
I got my phone today, and one of the first things that I did was test all of the Chargers.
My first thought is that the one plus cable that I bought is very high quality. Every charger that I tested, it charge faster than the cheapo ones that I bought on Amazon.
However, what I've been consistently surprised with is that using the same cable this phone charges faster on a Qualcomm quick charge 2 charger than it does on a standard USB charger. I've tested this with all sorts of Chargers around my house and I'm consistently seeing around 1500 when connected to a quick charger, and only a thousand when connected to a standard charger.
The USB C charger that came with the phone is significantly faster. However I wanted to share this so that for those others who bought all sorts of Qualcomm quick charge 2.0 Chargers, don't throw them out. They're still better than a regular charger.
Yeah on a good USB 3.1 cable (nice and thick) with my standard quickcharge charging block (7 ports, 60W total IIRC) I get 'charging rapidly' and it charges better than 1% a minute - about the same rate my N5 did on a much smaller battery. I've still not taken the google charger out of its box yet.. Need to get around to testing it even if I can't see myself using it.
TonyHoyle said:
Yeah on a good USB 3.1 cable (nice and thick) with my standard quickcharge charging block (7 ports, 60W total IIRC) I get 'charging rapidly' and it charges better than 1% a minute - about the same rate my N5 did on a much smaller battery. I've still not taken the google charger out of its box yet.. Need to get around to testing it even if I can't see myself using it.
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Care to share said cable and block?
Sent from my Nexus 6 using XDA Free mobile app
I am curious as to what "standard" chargers you are using. I have a wall charger rated at 5v 2.1a (non-QC) per port and a car charger rated at 5v 2.4a (non-QC) per port, and both of those charge at 1500ma. Is it possible that your "standard" chargers are only rated for 5v 1a output?
SymbioticGenius said:
Care to share said cable and block?
Sent from my Nexus 6 using XDA Free mobile app
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http://www.amazon.co.uk/gp/product/B010SFDKC6
http://www.amazon.co.uk/gp/product/B00L2SBZ80
My man. Thank you.
Sent from my Nexus 6 using XDA Free mobile app
if possible, please post the charging rates and time taken for charging with:
a) bundled type c fast charger
b) qc 2.0 quickcharger
c) standard 5v/2a charger
thanks!!!
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Can anyone recommend a car charger with the right cable combination that would give the fastest charging?
NVM... I found one with reviews stating that it rapid charges their 6P.
http://www.amazon.com/gp/product/B0146FK3G0?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00
fchowd0696 said:
Can anyone recommend a car charger with the right cable combination that would give the fastest charging?
NVM... I found one with reviews stating that it rapid charges their 6P.
http://www.amazon.com/gp/product/B0146FK3G0?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00
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Bought that one though still waiting on my phone. Like that it has micro USB too for other devices. Charges my HAM2 very fast.
Your results have nothing to do with them being QuickCharge bricks, I have a inline amp meter and I can get 1.5 on any brick with an amp rating high enough, not just my QC bricks that I was using with my Moto X. At least people will know if they have a QC brick they'll get at least that though.
I didn't know this thread existed. I'm getting what I think is pretty poor performance from the stock 6p charger. Please see this post:
http://forum.xda-developers.com/showthread.php?t=3234521