Just wondering what amperage people are getting. I get a max of 1.2a even though I have tried other chargers that put out more. Not sure if it's something with my phone or maybe the various chargers I've tried.....
Sent from my SCH-I545 using XDA Premium HD app
todd3835 said:
Just wondering what amperage people are getting. I get a max of 1.2a even though I have tried other chargers that put out more. Not sure if it's something with my phone or maybe the various chargers I've tried.....
Sent from my SCH-I545 using XDA Premium HD app
Click to expand...
Click to collapse
U using stock Samsung charger and cable?
Sent from my SCH-I545 using Tapatalk
todd3835 said:
Just wondering what amperage people are getting. I get a max of 1.2a even though I have tried other chargers that put out more. Not sure if it's something with my phone or maybe the various chargers I've tried.....
Sent from my SCH-I545 using XDA Premium HD app
Click to expand...
Click to collapse
I've found the stock charger that came with my phone doesn't charge very fast anymore. It will sit around 1.2a but with a new charger with a rating output of 2a I've been getting a charging rate of about 1.9
Sent from my SCH-I545 using XDA Free mobile app
Not gonna lie I have been using the iPad charger with a stock cable and that will get it done quick. Try to back up an oem iPad block off amazon or what not and you will notice a difference.
todd3835 said:
Just wondering what amperage people are getting. I get a max of 1.2a even though I have tried other chargers that put out more. Not sure if it's something with my phone or maybe the various chargers I've tried.....
Sent from my SCH-I545 using XDA Premium HD app
Click to expand...
Click to collapse
Unless you are running a custom kernel with fast charge I think the phone will not charge at 1.9a unless the screen is off.
Sent from my 4.4.3 GPE'd vzw S4
znel52 said:
Unless you are running a custom kernel with fast charge I think the phone will not charge at 1.9a unless the screen is off.
Sent from my 4.4.3 GPE'd vzw S4
Click to expand...
Click to collapse
How do tell what amps it charges at? All I can find is what the voltage, using 3rd party apps from the play store of course. My phone charges incredibly slow. Especially if I'm using it during the charge cycle. Hours can go by and it just sits there at 5%.
Sent from my SCH-I545 using XDA Free mobile app
zombolt said:
How do tell what amps it charges at? All I can find is what the voltage, using 3rd party apps from the play store of course. My phone charges incredibly slow. Especially if I'm using it during the charge cycle. Hours can go by and it just sits there at 5%.
Sent from my SCH-I545 using XDA Free mobile app
Click to expand...
Click to collapse
This is what I use: https://play.google.com/store/apps/details?id=com.abmantis.galaxychargingcurrent.free
Sent from my SCH-I545 using XDA Free mobile app
If you use KT kernel, it shows you in KTweaker the charging current.
Sent from my SCH-I545 using Tapatalk
znel52 said:
Unless you are running a custom kernel with fast charge I think the phone will not charge at 1.9a unless the screen is off.
Sent from my 4.4.3 GPE'd vzw S4
Click to expand...
Click to collapse
I'm running ktoons kernel without fast charge, and I'm getting 1.9
Sent from my SCH-I545 using XDA Free mobile app
I'm on safe strap so running a custom Kernal isn't possible. I'm guessing I'm seeing the 1.9a when it's initially waking up from the screen off. I've tried the stock cable, as well as the Amazon one that is 1.9a.
Sent from my SCH-I545 using XDA Premium HD app
znel52 said:
Unless you are running a custom kernel with fast charge I think the phone will not charge at 1.9a unless the screen is off.
Sent from my 4.4.3 GPE'd vzw S4
Click to expand...
Click to collapse
The Fast Charge mode on the KT kernel has no impact on AC charge rate, it only affects USB charge rate:
Normally, when you connect to a PC, you get about a 500ma charge rate and the ability to pass data along. When 'Fast Charge' is set, you lose the ability to transfer data, but the 500ma restriction goes away. In practical terms, it means that you should see between 700ma and 900ma as a result.
w/respect to the OP, my experience is weird. When the device was new, I got around 1800ma on stock charger and cable; now, same setup gets me 900-1200 if lucky (even with new battery). When I tried the stock charger with a different (newer) cable, I get around 1600. It's strange that a cable's ability to carry a charge would degrade so quickly (if that's in fact what's happening).
I have no proof, but absolutely believe that kernel can influence max charge rate, because in the past, I've observed max charge rate drop with the release of a new kernel version, then go up again with another release.
Samsung did slow the charging rate in one of the OTAs. People had been complaining about the phones getting too hot.
Sent from my SCH-I545 using Tapatalk
its weird for me, when i use my qi samsung galaxy charging pad(wireless charging) i get 1.9a, but when i plug the cord in to charge(wired), i get 460mA. wtf??
methodsofbeyond said:
its weird for me, when i use my qi samsung galaxy charging pad(wireless charging) i get 1.9a, but when i plug the cord in to charge(wired), i get 460mA. wtf??
Click to expand...
Click to collapse
What are you using to measure that? Qi isn't capable of charging at 1.9a
The galaxy charging current app..
So you've noticed that sometimes your phone seems to take forever to charge, and other times it seems to charge fine? Let me share some ideas that I've learned through lots of research on this exact subject last year...
I have used the galaxy charging app myself. In my opinion, CurrentWidget is better...looks cooler too. Ha.
So other than software related issues, you need to remember that the speed in which your phone charges is highly dependent on the hardware of 3 things:
1) Power Outlet (including power strips, extension cords, USB extenders, etc.)
2) Power Adapter (I highly recommend Anker's products!!!)
3) MicroUSB Charger Cable (if not using the factory Samsung cable or an Anker one, be sure that it's an 11-pin microUSB, and NOT a 5-pin...they look the same!)
Power Outlets - I know for me, if I use the outlet in my livingroom, it takes SO much longer for my phone to charge than it does in my bedroom. Just try this test! Grab that CurrentWidget app from above and try out some different outlets throughout your house, just to see whether or not the voltage varies. I bet you'll see that this is true!
Power Adapter - You should be using either the factory Samsung charger or a reputable 3rd party charger with the equivalent specifications (5V & 2.1A). However, I actually prefer my Anker charger over my Samsung one! If you're finding that you can't get a good charge, try swapping out your adapter with another one.
MicroUSB Charger Cable - As stated with the power adapter, you should also try to stick with your factory cable if possible. HOWEVER, I have found that to daily connecting and disconnecting of the cable with your phone, they probably receive the most wear and tear of anything else, and therefore may need replacement after some time. Again here, I find that using either my Anker cable or Samsung cable will give me the best charge. This is determined by both the CurrentWidget app and the amount of time it actually takes to get a full charge! Keep in mind that using USB extender cables can drastically lower the voltage to your phone - thus causing a very slow charge.
So basically, I know if I need to charge my phone as quickly as possible, I know I should clear my RAM and recent apps, put my phone on airplain mode, and using my Anker charger, I plug-in at the outlet near my closet door! I figured this all out by using these same ideas I just shared with you! Hope this is helpful!
If you can tell the difference between outlets, you need to call an electrician. Not kidding.
Sent from my SCH-I545 using Tapatalk
brizey said:
If you can tell the difference between outlets, you need to call an electrician. Not kidding.
Sent from my SCH-I545 using Tapatalk
Click to expand...
Click to collapse
I doubt that's entirely true. I mean, think of if they're on different circuits, that kind of thing can vary...also, depending on what you have plugged into your outlets can cause lower outputs I'd assume. I'd bet if you used the app I referred to and ran a test at each of your outlets, and reported back here (being honest of course), that you'd see some differences. Anyways, that was far from the point of the post. But thanks for the insight!
calebcabob said:
I doubt that's entirely true. I mean, think of if they're on different circuits, that kind of thing can vary...also, depending on what you have plugged into your outlets can cause lower outputs I'd assume. I'd bet if you used the app I referred to and ran a test at each of your outlets, and reported back here (being honest of course), that you'd see some differences. Anyways, that was far from the point of the post. But thanks for the insight!
Click to expand...
Click to collapse
The Samsung power supply is rated for 100 to 240 V @ 0.5 A input. It may be that the power supply is kind of crappy, and varies its output under small variations in input voltage, which is why you see what you see. It really shouldn't...but it wouldn't shock me if it did given that its made for $2 in China. Makes you wonder what would happen if you plugged it into a 240V source. When my wife went to Malaysia last summer to visit her folks, I just put a US to British transformer-less adapter on her Motorola brick and it worked OK plugged into 240V. Maybe the Samsung ones are crappier?
I squared R losses should be reasonably low in household wiring. NEC is 5% drop max at the outlet. And that is like the outlet the farthest from your mains under full rated load. Assuming you live somewhere typical, your voltage at the panel will be 120V+; a lot of time its a few volts over 120. If you have an outlet that is not tripping a breaker go below 100V, you have a problem somewhere. A 20% drop is not normal. Have you put a meter on the outlets with low charge rates?
My friend's OEM s4 charger charges at 1900 ma while my OEM charger only charges at max 1200... Weird how that happens but somehow the cable just stops charging as fast.
Sent from my SCH-I545 using Tapatalk
Related
Lately I began doing some gaming on my GS2 and this has happended to me twice now. one time while playing tiny tower and once on dungeon hunter. I will play with the phone plugged into my pc charging and the battery eventually drains. Is it possible that the games are actually using more juice than it's recharging? I'm currently running latest Unamed Rom.
More that the pc can't charge it quick enough. Wall chargers put out roughly twice the power of a pc usb port.
Sent from my SAMSUNG-SGH-I777 using XDA App
Don't expect much from USB charging via PC.
Sent from my SAMSUNG-SGH-I777 using XDA App
gr8hairy1 said:
More that the pc can't charge it quick enough. Wall chargers put out roughly twice the power of a pc usb port.
Sent from my SAMSUNG-SGH-I777 using XDA App
Click to expand...
Click to collapse
Its more like 50% more, since the charging for usb is ~440mA, and wall socket is 650mA. Also even at 650mA, at overclocked loads, the battery will still drain...
Damn. Thanks guys! I just ordered a few more batteries and wall charger.
I remember when I had my Captivate playing and recharging at the same time would make the back scorching hot. I bet this phone could do the same so I stray away from doing anything while charging it.
i noticed the same thing while charging via usb and using the phone at the same time. the phone will show that its charging and yet the battery is still dying. I chalked that up to the USB charger not having enough juice to charge it while in use.
as soon as I stop using it, the battery charges fine
penguinlogik said:
Its more like 50% more, since the charging for usb is ~440mA, and wall socket is 650mA. Also even at 650mA, at overclocked loads, the battery will still drain...
Click to expand...
Click to collapse
Id say its dependant on kernel/rom as well. Im running unnamed and entropy's latest DD kernel (i believe its the kernel that dictates chg rates tho). I get a charge rate of about 1100 mah on pc USB and about 1800 on a wall charger.
Sent from my SAMSUNG-SGH-I777 using XDA App
Not possible. It's been proven that the charging is limited by the hardware. Anyways USB has a max current of 500mA and the wall charger has a max current of 700mA...
penguinlogik said:
Not possible. It's been proven that the charging is limited by the hardware. Anyways USB has a max current of 500mA and the wall charger has a max current of 700mA...
Click to expand...
Click to collapse
Hmm interesting.. i hadnt gone as far as using an ammeter, just going by my log in battery monitor widget. Lol which is clearly WAY off :-0
Sent from my SAMSUNG-SGH-I777 using XDA App
jojorios said:
Damn. Thanks guys! I just ordered a few more batteries and wall charger.
Click to expand...
Click to collapse
Hi Jo,
Your AT&T unit should have already been bundled with an AC charger no? In your *excitement* over the new phone you may have neglected the WALL charger and it may very well still be in the original Oragne/White AT&T box...
lonewolf69 said:
Hi Jo,
Your AT&T unit should have already been bundled with an AC charger no? In your *excitement* over the new phone you may have neglected the WALL charger and it may very well still be in the original Oragne/White AT&T box...
Click to expand...
Click to collapse
Too bad they don't include more than one so I could have one for work.
jojorios said:
Too bad they don't include more than one so I could have one for work.
Click to expand...
Click to collapse
I use this...USB Wall Plug....For $1.90 and free shipping, it works Great!!!! 1000mA output too.
Then all you need is a cable...Charging and Data Cable....for $1.80 with free shipping too.
FYI: Don't be shocked if the shipping takes a couple weeks. I don't complain though for those prices.
So I am eagerly awaiting S-Off and flashing new ROMS/kernels/radios and I started to think about how slow my Rezound seems to charge. I know that the Thunderbolt had some kernels that included fast charge capability. Just think of the extra juice we can get in a short amount of time with FastCharge, UnderVolt/UnderClock, and more precise power management.
Does anyone know if this is in the works for the Rezound?
My Rezound charges up pretty fast, especially compared to my Droid Charge.
Sent from my ADR6425LVW using xda premium
DirgeExtinction said:
My Rezound charges up pretty fast, especially compared to my Droid Charge.
Sent from my ADR6425LVW using xda premium
Click to expand...
Click to collapse
That's ironic, the Droid Charge doesn't charge quickly.... Lolz.
Sent from my ADR6425LVW using XDA App
JAYNO20 said:
That's ironic, the Droid Charge doesn't charge quickly.... Lolz.
I think it would ironic if we were made of iron.
Sent from my ADR6425LVW using XDA App
Click to expand...
Click to collapse
Sent from my ADR6425LVW using XDA App
if your charging on USB it wont be giving the phone full power, to remedy this get a spare cable and disconnect the data so only the power is working
not sure if it works on the computer, but in my car it definitely worked
yeah definitely do a search for USB AC Charging. You can take those car chargers and wall chargers that don't give you the full 1A and do a quick solder job on them to make them work. I just did it with two of mine and it works great. Battery info now says Charging (AC) instead of charging (USB) and they both pull north of +700mA while charging instead of ~+300mA when on regular USB.
Yeah they called it the charge cause its always on the charger
Sent from a can on a string using XDA app.
Thread belongs in the General forum.
koszor said:
if your charging on USB it wont be giving the phone full power, to remedy this get a spare cable and disconnect the data so only the power is working
not sure if it works on the computer, but in my car it definitely worked
Click to expand...
Click to collapse
i did that. opened one up and clipped the green & white data cables. the phone still says "charging usb" though and doesn't seem to charge much faster...
Yea, I have tried every possible method of grounding out the data pins. I currently have my phone connected to a computer power supply I converted to a desktop supply with 4 USB charging ports. It can supply up to 13A if the device needs it. The data pins are all shorted and the housings grounded. The phone still says USB Charging....It does seem to pull more current and does seem to be charging faster.
I know that there is some hardware limit on the charging current, but with an SBC kernel (please someone make one...) I think that this bug will be fixed. I am going to try the Trickle Charge technique from previous HTC phones to get a full 100% charge. I will let you all know how it goes.
Or ...
Fast charging is built in ...
... turn off your phone when charging, and use a 1A charger.
DONE.
jdmba said:
Fast charging is built in ...
... turn off your phone when charging, and use a 1A charger.
DONE.
Click to expand...
Click to collapse
So I tested this idea that Fast Charging is "built-in", I used a usb cable that I split connected through an Ammeter to test how much current the phone was drawing from the charger in the one and off state. From my tests I found that my phone, no matter what the state does not draw more than 400mA from the supply. My charger is capable of supplying up to 13A to the four usb ports I installed. I also tested this with the HTC stock charger rated at 1A. This had the same results. I think that there is a hardware/software limit built in.
Just to be clear and justify its place in Dev, this thread is asking if there are any developers out there who are working on an SBC (Superior Battery Charging) Kernel for the Rezound. I fully understand the workings of power supplies (I'm an Electrical Engineer) and am just trying to see if anyone is working on this.
And it still belongs in General. That doesn't justify it. If YOU developed a Kernel, or were posting it, then it could be posted here. Questions, suggestions, complaints, ideas, etc belong in General.
Not sure accurate battery monitor widgets are, but mine has shown upwards of 850mah on charging and over 700 on draw (never saw that on my thunderbolt).
It does seem to slow down as it gets close to full (over 90%), then I never get more than 200mah charge.
So I will get the regular charger for gs3 that comes with the phone (tomorrow when i get the phone). but i also have the HP Touchpad charger which gives output of 2.0A. I was wondering if I charge my phone with the HP charger will it actually charge is faster then the regular gs3 charger? the reason i ask is cause in other threads ppl have mentioned that it only charges faster with non - stock roms like aokp or aosp roms. please lemme know if this will work. thanks
It should I got one of those and it does charge faster I got the bb one tho
Sent from my SGH-T999 using Tapatalk 2
I've used my BlackBerry PlayBook charger on mine and it doesn't charge any faster. That charger is 1.8amp.
It will not charge faster. The phone only draws as much amps as its allowed to. Whether you use a 1 amp charger or a 2 amp charger, it'll only charge at the phones own rate
Sent from my SPH-L710 using xda app-developers app
then theres basically no advantage to using some other charger?
I don't believe so. The phone only draws what it needs.
Sent from my SPH-L710 using xda app-developers app
A lot of chargers will be rated less than the stock charger. Especially cheap car chargers. In that case the phone can only draw at the charger rating.
alirulzz said:
then theres basically no advantage to using some other charger?
Click to expand...
Click to collapse
Unless you run a custom kernel that allows for higher charge rates.
Sent from my ADR6400L using Tapatalk 2
I have a dual car/wall charger and I noticed when plugged in the car it charges faster.
Sent from my vivow using Tapatalk 2
The values listed on the charger is the max output it can provide. If the setting on the phone or the hardware is set up to only pull 1A, then it will always pull that unless that is more than what the charger can provide.
That being said, you should be able to take the battery out and charge it faster separate from the phone. I've always read, though, that charging a battery faster ( i.e. turning up the current) will/may reduce the life of the battery
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
the only way I have found to charge phone's faster is to power it off and then charge...takes about half the time to fully charge
none of the 2 amp chargers make it any quicker
alirulzz said:
So I will get the regular charger for gs3 that comes with the phone (tomorrow when i get the phone). but i also have the HP Touchpad charger which gives output of 2.0A. I was wondering if I charge my phone with the HP charger will it actually charge is faster then the regular gs3 charger? the reason i ask is cause in other threads ppl have mentioned that it only charges faster with non - stock roms like aokp or aosp roms. please lemme know if this will work. thanks
Click to expand...
Click to collapse
I have a Touchpad charger and it can be used, though I noticed that the phone got hotter than normal, IMO. The phone comes with a 1.0A combo wall charger with USB cable. Interestingly the Samsung stand and battery charger that comes with the spare battery comes with a .7A charger but the charging unit itself is 500mA/1A on the input with output at only 4.2v @ 450/900mA.
Okay, this is a weird one. When charging my phone, almost every single time, it will charge up to about 76-83%, and then stop. However, if I unplug it and then plug it back in it will resume charging like normal up to 100%. I mean this is bizarre...is it a battery calibration issue, perhaps?
Edit: Happens on any/every ROM I use.
Sent from my LG-E970 using xda app-developers app
I assume this hasn't been doing it since you bought it?
Sent from my LG-E970 using xda app-developers app
Murasakiii said:
I assume this hasn't been doing it since you bought it?
Sent from my LG-E970 using xda app-developers app
Click to expand...
Click to collapse
No it hasn't...However, I'm also using the charger from my Galaxy S2 most of the time...could that be it? I'll have to find my LG charger, in order to test.
Sent from my LG-E970 using xda app-developers app
Jank4AU said:
No it hasn't...However, I'm also using the charger from my Galaxy S2 most of the time...could that be it? I'll have to find my LG charger, in order to test.
Sent from my LG-E970 using xda app-developers app
Click to expand...
Click to collapse
You mean the usb box from ur galaxy s2.... If so each box may have a different output for each phone..... For instance when i use my daughters charger it takes 5 times longer to charge my og than the og charger so that may be ur problem.
Via LG OG running Rootbox 4.2.2
Had the same thing too and as described in the post above it is in fact due to the output. Just compared my old but still kicking s2 and my og charger and the og charger has a much greater output.
Yeah lgog charger is 5v 1.2a. It's very nice. We also gotta qualcomm technology called quick charge or something like that that enables the battery to charge substantially faster without damaging itself. It's a logic chip in the phone and improved battery chemistry from LG. Asian manufacturers have a huge portfolio of products and are weirdly driven to diversify in all directions. LG has their own chemical company, and that's who makes our pimp batteries. I stuck with HTC for 7 years, but if LG flagship phones continue to have decent development then I'll probably stick with LG for a while. It's cool that they manufactured the entire phone from scratch except the SoC, no other company can really say that besides Samsung. And they're both Korean companies. Btw, south Korea is a great place to vacation.
Sent via LG E970 with houstonn aokp 4.2.2
tuxattack80 said:
Had the same thing too and as described in the post above it is in fact due to the output. Just compared my old but still kicking s2 and my og charger and the og charger has a much greater output.
Click to expand...
Click to collapse
Agree. Actually, when compared to other cables the OEM cable is much thicker.
Sent from my Nexus 4 using xda app-developers app
TangoXray said:
Agree. Actually, when compared to other cables the OEM cable is much thicker.
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
It looks as though I need to pay attention a bit more. I was using the LG wall charger, however, I wasn't using the right cable. I was using my Samsung cable. The Samsung cable is longer and reaches to where I can charge and play with the phone at night. I'll try the cable it actually came with and see if it continues to pull the same trick. The LG cable is definitely thicker.
Sent from my LG-E970 using xda app-developers app
I totally agree with you on the length of the cable and is why I was also using the s2 charger as well. If you need the extra length you can probably get by using an s3 charger. I steal my girlfriend's s3 charger from time to time just because I want a little more mobility than two feet and it charges the phone just fine with very similar output ratings....... 1.0 amps compared to 1.2 amps of the og charger.
I've had something similar happen recently. The phone will either charge extremely fast or extremely slow. I usually charge my phone at about 30% and sometimes it will charge fully in about 90 minutes and others it will take up to 8 hours, with the slowest part being in that 73-87% range you describe. I always use the LG charger and cable because its the only one that I have. I'm running code fire's CFX ROM if that helps anyone out.
Sent from my LG-E970 using xda app-developers app
That's some weird stuff. I'm getting good performance right now using the stock cable with a belkin 1A cigarette lighter to USB adapter. But last week I grabbed a cheapo Chinese retractable cable that was in my wife's car and plugged it into the built in USB port in the car (don't know what it's rated output is) and the battery drained VERY fast... Roughly one percent every minute or 2. Freaked me out... Certainly appears to me this phone is temperamental about cables...
Sent from my Optimus G using Tapatalk 2
yeah had the same probably with a car charger with my og and to think about it my s2 as well, I travel a lot for my job and constantly use gps while traveling and I've found that a lot of those cheapo car chargers you pick up from gas stations may charge the phones while inactive don't really charge them very well while in use. I could watch my battery percent fall while charger on both my s2 and og while using navigation, ended up finding a high output charger at a truck stop with a cord the size of a cb radio lol and havent haven't had any issue with it since. This is with stock and custom rom, even reverted back to stock a couple times to make sure that it wasn't the custom firmware that was causing the issue. Guess the makers of cheap chargers haven't caught up with the big batteries todays smart phones pack, should of hold on to my bag phone charger a little longer lol!!
tuxattack80 said:
yeah had the same probably with a car charger with my og and to think about it my s2 as well, I travel a lot for my job and constantly use gps while traveling and I've found that a lot of those cheapo car chargers you pick up from gas stations may charge the phones while inactive don't really charge them very well while in use. I could watch my battery percent fall while charger on both my s2 and og while using navigation, ended up finding a high output charger at a truck stop with a cord the size of a cb radio lol and havent haven't had any issue with it since. This is with stock and custom rom, even reverted back to stock a couple times to make sure that it wasn't the custom firmware that was causing the issue. Guess the makers of cheap chargers haven't caught up with the big batteries todays smart phones pack, should of hold on to my bag phone charger a little longer lol!!
Click to expand...
Click to collapse
Agreed. In my case the phone was discharging rapidly while not in use. Screen off. I'm thinking the plug on that cheap cable was shorting a couple pins on the plug..
Sent from my Optimus G using Tapatalk 2
That's on thing i do miss about having a removable battery though, is the fact that a large part of my job is in very dusty dirty environments ....i.e. steel, aluminum mills and other high temp dusty and dirty as hell places is that i could remove my battery and feel safe while using a little contact cleaner. Now og days i play it safe with air. But either way i don't think that has anything to do with the use of cheap chargers lol. Best bet would be to stick with oem or pay the extra price tag for those high out put chargers that att offer.
Coming from the s3 which I thought charged really fast. This phone seems to crawl. anyone else think the same?
Sent from my SCH-I545 using Tapatalk 2
It's the opposite if you use the supplied charger.
Sent from my SCH-I545 using xda premium
^^ what he said. 5v and 2.0amps is like double the normal chargers... 2.0amp is crazy fast... from 32% to full in just under an hour
Yup I bought an extra one on Amazon because of how slow my old charger charges it. It's like trying to charge a laptop with a phone charger haha you need the more powerful charger. My car charger claims its 1amp too but I feel like it charges super fast too.
sent from my galaxy s4
Thank you all and good to know. That's one thing I never read about. Gonna have to buy a few spares
Sent from my SCH-I545 using Tapatalk 2
travishamockery said:
Coming from the s3 which I thought charged really fast. This phone seems to crawl. anyone else think the same?
Sent from my SCH-I545 using Tapatalk 2
Click to expand...
Click to collapse
I have the same prob. Charged about 7% in 30 mins (using the supplied charger). Charges fine when I use my N7 charger though. I'm gonna have to check the charger when I get home.
Just for the hell of it, here is my how my charge is going right now:
7% - plugged in at 3:22
21% - 3:31
33% - 3:42
44% - 3:52
57% - 4:04
83% - 4:28
For what its worth I don't have this issue with charging - s4 charges comparable to s3 HOWEVER i am not using stock charging that came with the box, I am using cables i have had from before and sometimes even use the USB to wall plugs from Apple and/or BB or whatever I have had lying around - seems to work well.
With a 5V 2 amp charger it goes like a bat out of he'll, using my thunderbolt's 5V 1 amp charger it's quite slow.
Sent from my SCH-I545 using xda premium
i have noticed that having it plugged into either a car charger or a computer, it does NOT charge very quickly... not to the point where it is annoying but, slow enough to notice a difference...
If i take the cable from the box and plug it into my USB hub (it has it's own power source also) if im using it for much other then file transfers i can still lose power off battery. It just seems to slow the battery drain instead of just charging slower then plugged into the wall with the 5V 2amp plug. Now obviously if I'm not doing much with the phone while on the USB it will charge but much slower then the wall charging
Eric214 said:
If i take the cable from the box and plug it into my USB hub (it has it's own power source also) if im using it for much other then file transfers i can still lose power off battery. It just seems to slow the battery drain instead of just charging slower then plugged into the wall with the 5V 2amp plug. Now obviously if I'm not doing much with the phone while on the USB it will charge but much slower then the wall charging
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That's to be expected when plugged into a source that's limited to 500 mA.
Sent from my SCH-I545 using Tapatalk 4 Beta
---------- Post added at 07:52 PM ---------- Previous post was at 07:49 PM ----------
vue said:
For what its worth I don't have this issue with charging - s4 charges comparable to s3 HOWEVER i am not using stock charging that came with the box, I am using cables i have had from before and sometimes even use the USB to wall plugs from Apple and/or BB or whatever I have had lying around - seems to work well.
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Bear in mind that the phone will charge faster using the stock cable than it will with other cables.
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My s4 flies on the charger.
Sent from my SCH-I545 using xda premium
Same here...on stock charger my phone charges v3ry quickly. Are you rooted with special ROM? Are you using non samsung charger?
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Ok, there's something else going on here. Maybe its software related.
My S4 will only charge fast on the supplied charger. The cable doesn't seem to matter; I tested a bunch of them. I have an assortment of other 2A chargers and none do better then barely keeping up with power useage; hardly any charging at all. Again, the usb cord doesn't seem to make any difference.
Now, I've read mention of a "fast charge" feature that the kernel developers are "turning on". I haven't found a good explanation of what exactly that means but it appears to me that Samsung tried to make the device only charge at the full rate using their chargers and at a minimal trickle charge rate for all others even if they are capable of the full 2A output.
Then there is the problem of buying extra Samsung chargers since there appear to be a lot of knock-offs that will not get the phone to charge at full rate.
What a stupid thing to be such a PITA.
Anyone have any solid info on this?
just about every samsumg device either needs a kernel hack or an adapter to get fast charge off of a non-samsung charger. you can grab a few of these:
http://dx.com/p/usb-data-charging-extension-cable-for-samsung-p1000-black-91141
and use them with just about any 2amp charger with no problems on my old galaxy tablets or my galaxy note and nexus getting fast charge(nexus even charges faster on the 2amp - hope i don't blow it up!).
Fast charge from my understanding is just turning off the data connection when plugged into a computer. This allows for higher usb charge rates, it also helps certain wireless charging setups. I am coming from a gnex where this was the terminology, I assume it's similar. Fast charge shouldn't do much for you if you are having trouble with 2amp chargers, but maybe in this case Samsung limits through put when it doesn't recognize the charging unit? If fast charge tweaks somehow disable this, then I guess it's possible you would enjoy increase in charge rate though I have no verification on that.
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Well, I have to discount my own theory. I have some off-brand adapter and cable to charge in my car that works great.
I sure would like to know what's going on with the chargers in my house.
kdo23 said:
Fast charge from my understanding is just turning off the data connection when plugged into a computer. This allows for higher usb charge rates, it also helps certain wireless charging setups. I am coming from a gnex where this was the terminology, I assume it's similar. Fast charge shouldn't do much for you if you are having trouble with 2amp chargers, but maybe in this case Samsung limits through put when it doesn't recognize the charging unit? If fast charge tweaks somehow disable this, then I guess it's possible you would enjoy increase in charge rate though I have no verification on that.
Sent from my SCH-I545 using Tapatalk 2
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There's a problem with semantics going on. Fast charge is exactly what you're used to it being on the GN. What's being referenced here is quick charge, a feature of later Snapdragon SoC's.
Sent from my Nexus 7 using Tapatalk HD
fast charging is rapid charge where near full power is transferred. in the gn2, gnote 10.1, gnex, and gtab10.1 the max i got was ~1600mA with all my 2.1A chargers including the samsung charger. the rapid charge continues to 90% and then switches to trickle - anywhere from 400-900mA til 100%. without the adapter you're stuck at trickle, even at under 90%. some chargers seem to have it built in to rapid charge,but most don't.
i've never gotten a full 2100mA from any charger yet.
you can find schematics on how to build your own adapter in one of these samsung boards. i think there was a very detailed one in the gnote10.1 forum.