Anyone manage to charge successfully charge through usb port of mediapad?
yuxiang said:
Anyone manage to charge successfully charge through usb port of mediapad?
Click to expand...
Click to collapse
Yes, but it does so very, VERY slowly and there is no indication on the tablet that it's charging.
Definitely an overnight kind of thing.
Charge by usb only if your missing the original plug
Sent from my HUAWEI MediaPad using xda premium
Xanderful said:
Charge by usb only if your missing the original plug
Sent from my HUAWEI MediaPad using xda premium
Click to expand...
Click to collapse
Is it enough power from USB port to use for example in-car navigation, at least for 10 hours?
Using car charger shouldn't be a problem at all. The issue is charging via the USB port on your computer which puts out like maybe .5 watts. They make a car charger with the proper end to plug into the charging port.
Sent from my AT100 using XDA Premium HD app
I brought a USB cable that fits into the power socket on the media pad on ebay. Cable works like a charm and charges similar to using the charger that comes with the media pad.
The charger was less than $10 including worldwide shipping.
rayaz said:
I brought a USB cable that fits into the power socket on the media pad on ebay. Cable works like a charm and charges similar to using the charger that comes with the media pad.
The charger was less than $10 including worldwide shipping.
Click to expand...
Click to collapse
Pls give the link to this USB cable. TQ
You will find a lot of them, if you type "mediapad power cable" on ebay search
I also got one of those USB to power cables. Result is 86% to 100% in 54 minutes from laptop USB.
The unit does charge from USB, but that's an overnight thing.
Sent from my HUAWEI MediaPad
rayaz said:
I brought a USB cable that fits into the power socket on the media pad on ebay. Cable works like a charm and charges similar to using the charger that comes with the media pad.
The charger was less than $10 including worldwide shipping.
Click to expand...
Click to collapse
I did the same, only paid half that for a US seller and actually got to me next day.
eBay Listing
I think he bought cable + charger. If it charges as fast as the included charger, then it must be a 2amps charger, and that is a bit more expensive than your average cellphone charger (usually between 0.5amps to 1amps).
If he indeed bought the cable only, then $10 is a bit too expensive. Even at $4 is still too expensive. Probably not enough competition to drive the price down.
Sent from my HUAWEI MediaPad using Tapatalk
is there any way to tell if its charging via usb ...mine has stopped charging with the power supply ..... both power supply and pad being exchanged later today by orange uk ...but it would be handy to know for future reference
cant find a setting for charge via usb like i can on my phone or is it rom specific?
usb charging
With CyanogenMod 10 my springboard charged quite happily via USB. from a regular 500ma USB port it would charge very slowly while in use and only slightly faster with the screen off. On a 2 amp USB charger from my Asus tablet or 2 amp cigarrete lighter -> USB adapter it would charge fairly quickly either way
Then I updated to cm10.1 20130515 and USB charging quit working at all
I performed clear & reset from both the settings menu and TWRP, rolled back to 20130501 but USB charging is still kaput!
HELP???
problem solved, see the "USB OTG cable compatible with Mediapad?" thread for my steps
*keywords: usb charging, battery drain, background sh process, slow charging, overclocking undervolt bigmem kernel
Can i charge the media 7 tab before charge goes down (before the orange marking) or (before 5 percentage.)
I have my Huawei MediaPad T1 10 as dashboard with screen on 24/7 and 2.3A USB charger always connected...never reaches 100%
I have noted that the original cable works better.
Related
I've got around 4 different micro-USB AC Adapters that I have lying around. One is the OEM Lenovo, One is OEM Samsung (i777 charger + Samsung Micro-USB cable), one is a multi-USB port AC adapter with a micro-usb cable, and the last is an iPad 2 wall charger with a micro-USB cable.
ALL of the chargers except the OEM Lenovo ones don't charge my tablet. When It's plugged in, for a couple of seconds it says Charging (AC), and then it just switches to discharging. I've tried all the aforementioned chargers and cables in different combinations, and the ONLY ones to work correctly is the Lenovo combo.
Is there a specific reason to this? Also tried all 4 cables connected to my PC.. They all don't charge efficiently at all.
look at the Voltage and Amperage of the adapter !
Lenovo use 2A if I remember well, the other use only 1A
quyTam is correct... most USB chargers are between 500mA and 850mA. The dual battery design of the tablets requires a min of 2A to charge correctly. This is why most computer USB ports will not charge the device.
However... the changer isn't the only thing restricting the power. The cable you are using can also effect power. Not all cables are created equal.
I stopped by Staples just after getting my tablet and picked up a 4 port 2.1A USB wall charger. It will charge my phone, Bluetooth, and tablet. There are also really nice 2A "extra battery" devices out there that allow you to a charged battery with you that will power and recharge your device.
I also recommend the dock for the tablet... it has a 65w power supply and charges the tablet in a 1/3 the time then the usb chargers.
where to get a charger
i tried 2Amp chargers....didn't help/
my brother says:
"the pins are slightly different/off/longer/shorter/what DID lenovo do here?"
as a safety i bought:
http://www.ebay.com/sch/?_kw=886605022780&_clu=2&_fcid=100&_fvi=1&_localstpos=&_stpos=&gbr=1
just in case...
it costs an arm and a leg for a microUSB charger, but not charging the device for a couple of days would cost me more :S
just another things that makes the TPT slightly less then perfect
o,O
Charger
I use a Dell Axim x51 charger and an LG cable from an old phone. Seems to work very well and eBay prices for the charger are less than $4.
http://rootzwiki.com/topic/8523-rev...arger/page__st__40__gopid__448194#entry448194
In my experience a 1A charger will also work. Nothing less than 1A will do anything.
I keep my Lenovo charger in my home office and use a 1A phone charger next to my bed for overnight charging.
I too have a 4 port mains to USB charger: 2A but I thought it was distributed to the 4 ports. If all were being used then each port would only be .5A.
Will have to try it out. If it works it would lighten the travel load of chargers.
Gottoon said:
quyTam is correct... most USB chargers are between 500mA and 850mA. The dual battery design of the tablets requires a min of 2A to charge correctly. This is why most computer USB ports will not charge the device.
However... the changer isn't the only thing restricting the power. The cable you are using can also effect power. Not all cables are created equal.
I stopped by Staples just after getting my tablet and picked up a 4 port 2.1A USB wall charger. It will charge my phone, Bluetooth, and tablet. There are also really nice 2A "extra battery" devices out there that allow you to a charged battery with you that will power and recharge your device.
I also recommend the dock for the tablet... it has a 65w power supply and charges the tablet in a 1/3 the time then the usb chargers.
Click to expand...
Click to collapse
That's for sure. I thought the dock was a waste of money until I forked out on Amazon. Saves so much time it isn't funny....
Sent from my Nexus S using xda premium
The tablet needs to see 5.3 V, when using >500mA.
Already thinner USB-Cables increase the voltage drop
so the thinkpad wont charge, even with the original charger.
It may have less to do with your charger than with the cables. I bought extra long (6 and 10 ft) USB cables for charging phone and my TPT. The 28AWG of any length won't charge the TPT. The 24AWG 6 ft and 10ft cable *will* on a 2A charger. I haven't tried other combinations. I believe it will charge on a 1A charger as well, but would likely require the larger 24AWG cable.
Sent from my PC36100 using Tapatalk
Design Flaw in Thinkpad Tablet prevents Landscape Mode Charging for Developers
I actually sent my 1838-22U in for service, thinking that there was a hardware problem preventing charging while connected via USB. At first I had noticed that while connected directly to a PC via USB for development purposes (no docking station), the unit indicated that it was charging. However, it seemed to be discharging faster than it was charging and slowly worked its way down to unusable. Lenovo Tech Support indicated that they had heard of this happening, and that I should send it in to have its system board replaced. I sent it in only to find that all they had done was replace the battery and reload the firmware. I did notice, however, that when I connected the USB cable, it appeared to go into charging mode for a couple of seconds then switch into discharge mode. I asked Tech Support about this and they said they this was actually the way it should have been behaving all along, and that this was by design.
The User Manual (see attachment) states only that it might not charge, and that it will only discharge if the tablet "exceeds USB 2.0 power limits" (i.e. 500ma).
Well, the Thinkpad Tablet seems to be pretty good at doing that.
Here's where I present to the development community a conundrum. How can one develop in landscape mode while charging (even slowly)? In portrait mode, one can use the accessory docking station, which uses its own charger and charges through the proprietary connector next to the micro USB port, while separately allowing the USB to be used for data. In landscape mode, there is no such option. I will accept that the unit may draw too much current to charge well via a 500ma USB data connection, but then Lenovo should provide a optional charger that connects directly to the same proprietary connector used by the docking station. This is done elsewhere. For instance, Motorola realizes that the Xoom draws too much current to charge via a USB data connection, so they don't even bother with it - they provide a dedicated charger connection and charger.
==UPDATE== 25-May-2012
SOLUTION FOUND
The solution to using a data connection and charging the Thinkpad Tablet at the same time, without relying on the portrait-mode-only Dock Station, is to connect through a powered USB hub which supports the USB Battery Charging Specification (with a Charging Downstream Port). The specification provides at least 1.5A, which quite handily satisfies the Thinkpad. I found such a hub, the GWCTech HU2V40, on Amazon for $15.99.
If you get this model, note that only one of the 4 ports can be used for high-current charging. It includes a tiny "Smart Charger Adapter" but which appears to block the data connection (at least when when used with the Thinkpad). In other words, ignore the little black passthrough adapter included with it, and plug directly in as you normally would. The instructions don't explain the purpose of the passthrough adapter.
Hi everyone!
I just wanted to ask this: I just bought a 90W charger for my laptop. It is a "Targus Compact Charger for laptop and usb tablet"
It charges my laptop and also has that usb port which charges through a cable, compatible devices. Only that on that usb port, it says that it charges 2.1A, which is a lot. My phone charger does only 550mAh.
So the question, shouldn't I charge my phone through the adapter?
Thanks in advance!
You guys have much luck finding power supplies or cables for a generic USB power adapter for the springboard? I will probably use this device as a GPS quite a bit, and would like to have the car charger.
delio77 said:
You guys have much luck finding power supplies or cables for a generic USB power adapter for the springboard? I will probably use this device as a GPS quite a bit, and would like to have the car charger.
Click to expand...
Click to collapse
Ebay has plenty.
Just search for usb charging cable mediapad and iPad usb car charger. The purpose for iPad charger is to make sure that the charger has big enough amp/watt.
Sent from my HTC Glacier using Tapatalk 2
rurou said:
Just search for usb charging cable mediapad and iPad usb car charger. The purpose for iPad charger is to make sure that the charger has big enough amp/watt.
Click to expand...
Click to collapse
Yep, you need at least a 2 Ampere charger.
I used a bog standard 0.5A charger first in the car and the tablet ran out of juice after a few hours. Then I found a 3 Ampere car charger at a fuel station shop and now it runs fine.
I bought a USB-to-Mediapad power connector cable from some german online store to connect the car charger to the tablet. As we all now charging via the micro-usb port does not work.
stefvienna said:
Yep, you need at least a 2 Ampere charger.
I used a standard 0.5A charger first in the car and the tablet ran out of juice after a few hours. Then I found a 3 Ampere car charger at a fuel station shop and now it runs fine.
I bought a USB-to-Mediapad power connector cable from some german online store to connect the car charger to the tablet. As we all now charging via the micro-usb port does not work.
Click to expand...
Click to collapse
Could you please provide a link to the site with usb-to-springboard adapter? I can't seem to find one anywhere
The microUSB port does charge but it is a slow trickle. I can get it from empty to 100% if I plug it into a microUSB charger overnight, but if I need to boost it as fast as possible it has to use the charge port.
ridingonfumes said:
Could you please provide a link to the site with usb-to-springboard adapter? I can't seem to find one anywhere
Click to expand...
Click to collapse
Here you go.. this is the one I got.. pretty pleased with it.. One tip, only use a 1amp charger, with 1,5 or 2 amps the mediapad starts to overheat or something, it overall fails to function properly
http://www.ebay.nl/itm/TABLET-PC-LA...ingstationen&hash=item564af7f0ee#ht_855wt_907
Hello guys,
Could you give fast answer what parameters has original huawei s7-301u charger? I lost my charger and i need buy another ASAP.
Best,
Lolu said:
Hello guys,
Could you give fast answer what parameters has original huawei s7-301u charger? I lost my charger and i need buy another ASAP.
Best,
Click to expand...
Click to collapse
5 volts, 2 Amp. It needs that much power, a smaller ps might burn the house down.
Big thanks to you man!!!
Does anyone know if there is an official 2m USB cable available in the UK? I bought a generic one off eBay, but it charges the phone extremely slowly....
I use the 2m cable that came with my kindle 3 and it works as well as the original one
Sent from my LT26i using XDA
Are you charging the phone from a USB port? If so, it's the limitation of the port, not the cable. Try with a proper charger an it should charge at a more sensible pace.
Dealextreme dot com
Sent from my LT26i using XDA
Charging speed doesn't depend on the cable but on the charger it is used with.
anthon said:
I use the 2m cable that came with my kindle 3 and it works as well as the original one
Click to expand...
Click to collapse
I'm afraid it doesn't work as well for me. I got a Kindle 3 cable, and while it does charge the phone (using the charger which came with the phone), it does it very slowly. So slowly that if I try to use the phone even for basic tasks whilst charging with it the battery still keeps heading south.
If I use the stupidly short cable that came with the phone it charges nice and quick, but every other cable I have used so far either doesn't charge or does so very slowly.
Any ideas as to why this would be?
On a related note, this sounds good, but again the cable looks stupidly short:
http://www.sonymobile.com/gb/products/accessories/quick-charger-ep851/
What are you using to charge your phone? An EP-800 or something else? I have a cheap 1500ma charger that seems to take ages to charge my Xperia. The cause was that for a full speed charge, pins 2 and 3 must be bridged. I dismantled the charger and put a tiny blob of solder on the usb port pins. It now charges like a demon.
Same story with my car charger. Before the mod I could actually lose charge when using satnav and streaming music over bluetooth.
I have a battery widget that says whether I am on AC charging or USB charging. Its name eludes me.
Oh, and a safer alternative may be to sacrifice a USB cable and bridge the pins on that.
Better than all those though is the official Blackberry Playbook charger. 2A and a long cable. Charges the phone like nothing else.
Yep, am using an EP-800.
Fortunately the latest cable I ordered works a treat, so I can happily recommend this one:
http://www.amazon.co.uk/gp/product/B007OWH65Y/ref=oh_details_o00_s00_i00
Rabangus said:
I'm afraid it doesn't work as well for me. I got a Kindle 3 cable, and while it does charge the phone (using the charger which came with the phone), it does it very slowly. So slowly that if I try to use the phone even for basic tasks whilst charging with it the battery still keeps heading south.
If I use the stupidly short cable that came with the phone it charges nice and quick, but every other cable I have used so far either doesn't charge or does so very slowly.
Any ideas as to why this would be?
On a related note, this sounds good, but again the cable looks stupidly short:
http://www.sonymobile.com/gb/products/accessories/quick-charger-ep851/
Click to expand...
Click to collapse
Double the length, double the resistance of the wire. Assuming the have the same cross-sectional area.
From the "Ultimate AT&T Galaxy Note Accessory Guide" thread:
fbauto1 said:
13. Car Charger + Power Inverters
$10 -- PowerGen Dual USB 2A Heavy Duty Ouput Car Charger for Apple iPad 2, iPhone 4 4s 3Gs 3G, iPod Touch (USB Cable not included) --- Review
Click to expand...
Click to collapse
Has anyone else used the PowerGen car charger with the Note? I have a handful of other ones that all claim to fast-charge devices, but apparently it only works with iPhones and iPads. But since the PowerGen unit is on the list, can I assume people have used it and confirmed it will give me a 1A charge rate on the Note? I need a charger that can keep up with the Note occasionally drawing 1.4 A or more (display 100% brightness, GPS, LTE, Bluetooth all active, running Navigation).
A quick search for "powergen" in this forum only brings up the above thread.
Works like a champ. My battery was charging at 1600mAh while streaming soundcloud and using navigation. Definitely does the job.
I am using my car charger for galaxy tab 10.1 (2.0 amp) and it is working much better than any of the 1 amp chargers I have tried, OEM, boxwave, etc...
I also use the GT 101. 110V charging brick, so when I travel, only one brick and two cables. My experience is that the 2 amp charger works really well and will charge the phone while using GPS full time, where the OEM charger and other 1 amp chargers either maintain charge, or slightly discharge.
Thanks for the confirmation! Of course, now I discover Amazon won't ship that to Canada, and amazon.ca does not carry it. :crying: I'd go see what TELUS has to offer, but I'm sure it will be A) expensive and B) not have dual USB ports, or perhaps not even a detachable cord.
If you do find one, also buy a charge-only usb cord.
Sent from my SAMSUNG-SGH-I717 using Tapatalk 2
tdamocles said:
If you do find one, also buy a charge-only usb cord.
Click to expand...
Click to collapse
Is that still needed if the charger itself correctly supports fast charging? The cord I use now is the one from my Touchpad. I get 1 A to the Note from the AC plug, and the Touchpad gets around 1.8 A. I do also have a charge-only cable (much thinner cord, only two wires), but it doesn't seem to make a difference.
taob said:
Is that still needed if the charger itself correctly supports fast charging? The cord I use now is the one from my Touchpad. I get 1 A to the Note from the AC plug, and the Touchpad gets around 1.8 A. I do also have a charge-only cable (much thinner cord, only two wires), but it doesn't seem to make a difference.
Click to expand...
Click to collapse
The cord from the touchpad is probably wired correctly internally for fast charge. I bought a similar dual car charger and did not see a difference with the micro usb sync cable. I only saw a difference with a charge-only micro usb cable. The phone sees what pins are connected and determines if it is going to charge in usb charge mode(<=500ma) or AC charge mode(>=500ma).
tdamocles said:
The cord from the touchpad is probably wired correctly internally for fast charge. I bought a similar dual car charger and did not see a difference with the micro usb sync cable. I only saw a difference with a charge-only micro usb cable. The phone sees what pins are connected and determines if it is going to charge in usb charge mode(<=500ma) or AC charge mode(>=500ma).
Click to expand...
Click to collapse
So you use the Touchpad USB micro cable to charge your Note in the car? I thought the cable is too short? I am looking for a LONG USB micro cable that is shorted so it will give >500mA.
I am planning to buy the PowerGen but I need recommendation on the CORRECT USB cable that is long enough.
---------- Post added at 09:26 AM ---------- Previous post was at 09:24 AM ----------
slapshot591 said:
Works like a champ. My battery was charging at 1600mAh while streaming soundcloud and using navigation. Definitely does the job.
Click to expand...
Click to collapse
What cable do you use?
tdamocles said:
The cord from the touchpad is probably wired correctly internally for fast charge.
Click to expand...
Click to collapse
I don't think it is, because it also works as a normal USB data cable. If pins 2 and 3 are shorted (D+ and D-), then the cable become "charge only" and cannot be used for data.
I bought a similar dual car charger and did not see a difference with the micro usb sync cable. I only saw a difference with a charge-only micro usb cable.
Click to expand...
Click to collapse
Then it sounds like that car charger was an "iPad-compatible" one, i.e.: it does not have D+/D- shorted out to indicate to non-Apple devices that it is capable of more than 500 mA.
lanwarrior said:
So you use the Touchpad USB micro cable to charge your Note in the car? I thought the cable is too short?
Click to expand...
Click to collapse
The cable is about a meter in length. I only need about half that to reach from the plug to the phone mount on the dash.
taob said:
I don't think it is, because it also works as a normal USB data cable. If pins 2 and 3 are shorted (D+ and D-), then the cable become "charge only" and cannot be used for data.
Then it sounds like that car charger was an "iPad-compatible" one, i.e.: it does not have D+/D- shorted out to indicate to non-Apple devices that it is capable of more than 500 mA.
Click to expand...
Click to collapse
So then how does it charge fast then? If the cable isn't shorted? Motorola does the same thing. IIRC its a shorted setup to allow for fast charging. All of my USB cables come from Samsung, HP, and Motorola and I use them as data cables as well
Sent from my SAMSUNG-SGH-I717 using XDA
erick161 said:
So then how does it charge fast then? If the cable isn't shorted?
Click to expand...
Click to collapse
You short the pins inside the AC adapter or car charger, rather than the cable. If I understand correctly, the danger of using a charge-only cable is if you plug it into an actual USB port that isn't designed to supply more than 500 mA. Your device could then try to pull down, say, 2000 mA and potentially damage the power supply on your laptop or desktop.
taob said:
You short the pins inside the AC adapter or car charger, rather than the cable. If I understand correctly, the danger of using a charge-only cable is if you plug it into an actual USB port that isn't designed to supply more than 500 mA. Your device could then try to pull down, say, 2000 mA and potentially damage the power supply on your laptop or desktop.
Click to expand...
Click to collapse
Ahh OK. Well, the cigarette lighter/USB converters must act like shorted out wall chargers.
That's my setup.
Sent from my SAMSUNG-SGH-I717 using XDA
I'm using the Rocketfish 3.1A Model# RF-M657D with my Note. While using Google Nav, lowest brightness, keys backlight off, Sync off, HSPA+, the phone still loses charge (albeit, slowly). I'm assuming this is because the charger is not internally shorted between pins two and three as it is marketed as a iPad/iPhone charger. I'm using a Belkin Data/Charge cable so I know that is not shorted.
I have been doing some reading and last night, I purchased the "Satechi Smart Adapter Compatible with Samsung Galaxy S (I can't post links yet, google it.) so I will report back when I receive and pair it with the Rocketfish.
One thing I can't understand is how some of you have reported 1600mA from your car chargers. I am reading that without this adapter/cable mod, the Note will only run 460mA or so. With the adapter/cable mod, the Note's hardware maxes out at 960mA. Also, is their an app that allows me to see how much amperage the Note is receiving or are you guys pulling out the multimeter?
slapshot591 said:
Works like a champ. My battery was charging at 1600mAh while streaming soundcloud and using navigation. Definitely does the job.
Click to expand...
Click to collapse
Where/how do you get this info? Asking because I'm curious to see how my car charger does. It has usb ports rated at 2A, and I think it's 2A shared instead of per port, but want to see how it actually does when plugged in.
btswein said:
I'm using the Rocketfish 3.1A Model# RF-M657D with my Note. While using Google Nav, lowest brightness, keys backlight off, Sync off, HSPA+, the phone still loses charge (albeit, slowly). I'm assuming this is because the charger is not internally shorted between pins two and three as it is marketed as a iPad/iPhone charger. I'm using a Belkin Data/Charge cable so I know that is not shorted.
I have been doing some reading and last night, I purchased the "Satechi Smart Adapter Compatible with Samsung Galaxy S (I can't post links yet, google it.) so I will report back when I receive and pair it with the Rocketfish.
One thing I can't understand is how some of you have reported 1600mA from your car chargers. I am reading that without this adapter/cable mod, the Note will only run 460mA or so. With the adapter/cable mod, the Note's hardware maxes out at 960mA. Also, is their an app that allows me to see how much amperage the Note is receiving or are you guys pulling out the multimeter?
Click to expand...
Click to collapse
My rocket fish model must put out more than yours. My pic is above your post. With Google Nav, Google play music (streaming, not native music), full sync, brightness to at least 50% it only lost 4% over 30-40mins.
Sent from my SAMSUNG-SGH-I717 using XDA
erick161 said:
My rocket fish model must put out more than yours. My pic is above your post. With Google Nav, Google play music (streaming, not native music), full sync, brightness to at least 50% it only lost 4% over 30-40mins.
Sent from my SAMSUNG-SGH-I717 using XDA
Click to expand...
Click to collapse
From what I read, your charger is an .5 amp.
It's not like my phone dies or anything, but it'll lose like 5% an hour and I could be exaggerating. Are you using a charge-only cable or modded cable/charger at all? Like I said, I think this phone is only pulling down 460mA without said mod and I find 1600mA to be incorrect as I read the Note will only pull down 960mA max. We'll see what this adapter does for my charge times.
btswein said:
From what I read, your charger is an .5 amp.
It's not like my phone dies or anything, but it'll lose like 5% an hour and I could be exaggerating. Are you using a charge-only cable or modded cable/charger at all? Like I said, I think this phone is only pulling down 460mA without said mod and I find 1600mA to be incorrect as I read the Note will only pull down 960mA max. We'll see what this adapter does for my charge times.
Click to expand...
Click to collapse
They only thing I'm using is that exact setup posted. RF adapter and a Motorola atrix desktop dock charge cable.. (basically just a longer version of the standard wall charger)
Sent from my SAMSUNG-SGH-I717 using XDA
erick161 said:
They only thing I'm using is that exact setup posted. RF adapter and a Motorola atrix desktop dock charge cable.. (basically just a longer version of the standard wall charger)
Sent from my SAMSUNG-SGH-I717 using XDA
Click to expand...
Click to collapse
Ah, charge-only cable is the main factor here.
btswein said:
Ah, charge-only cable is the main factor here.
Click to expand...
Click to collapse
OK, I lied, I'm using the OEM cable that came with the Motorola Atrix 4G, not the longer cable from the desktop dock. I just checked my car and that's the cable that's in there.
Sent from my SAMSUNG-SGH-I717 using xda app-developers app
i have this tablet for a couple days now, when i plug the power adapter to the mains the power adapter gets really hot.
does anyone have the same result or is just normal? i know that the adapter obviously will get hot, but it seems a bit to hot, just the adapter the usb cable is fine and so is the tablet
Its normal. If it gets to hot it shuts off. I hear you have to put it in the freezer to attempt to bring it back.
Sent from my VS910 4G using xda premium
well, i just dont want to wake up one morning and find the all lot burned.
but it does get really hot
Noticed the same thing with mine. I'm actually on my second pad for other reasons, but I didn't notice the charger getting as hot with my first one. But it only seems to get hot when actively charging. I've checked it after letting it sit still plugged in, but after it finished charging and it was fine.
I just try not to leave it charging if I'm sleeping or going out. Although, I forgot to unplug it this time...
Sent from my DROID BIONIC using Tapatalk 2
can we charge the tablet via the pc usb port?
its hard not to leave the tablet charging over night when your using every day
LUCA LUCA said:
can we charge the tablet via the pc usb port?
its hard not to leave the tablet charging over night when your using every day
Click to expand...
Click to collapse
No. Other threads in this forum tell you why.
the reason the charger gets so hot is it's 15 volts
and it takes minimum 12 volts for the tablet to kick into charging mode
so to answer your question
a usb port does charge the tablet, but usb is only 5 volts
so it will not show charging
and it will probably take 24 hrs to fully charge
Mine gets hot while charging but once it hits 100% it cools back down. I don't charge it while sleeping for this reason. Also according to the manual the PC will charge it bult as previously mentioned it takes longer. The tablet must be powered off when charging this way or it won't charge.
Sent from my ASUS Transformer Pad TF300T using xda app-developers app
Same as other itt, it will heat up when charging, but if it's left in the wall unplugged from the tab/dock it cools back down.
Perhaps it needs 12v for full charge speed, but the 300 also trickle charges when plugged into a computer USB port.
i have notice that, when it finishes charging, that just cools down, i was just wondering did i get a faulty one, but as ye say its normal
thanks for all the replys
Luca
even there the charger gets very hot, so it is normal, also, we are going to have very hot temps these days, (40°C here)...
just be sure to not plug it near easy flammable things!
ciao
Yes we have noticed the charger gets very hot might have something to do with fast recharge time the device has
Sent from the network via FTL com buoy
Good evening,
On my charger i notice it is wrting : "output 5v--2A or 15v --1.2A"
This mind that i can use the charger for any phone that charge usualy wiht 5V ?? Do the charger "swap" the voltage by him self if it's not connect to the tablet ???
I don't want to burn my HTC, but to have one charger for the tablet and the phone will be good when travelling
Thanks
Yann
Sent from my ASUS Transformer Pad TF300TG using xda app-developers app
yannmrt said:
Good evening,
On my charger i notice it is wrting : "output 5v--2A or 15v --1.2A"
This mind that i can use the charger for any phone that charge usualy wiht 5V ?? Do the charger "swap" the voltage by him self if it's not connect to the tablet ???
I don't want to burn my HTC, but to have one charger for the tablet and the phone will be good when travelling
Thanks
Yann
Sent from my ASUS Transformer Pad TF300TG using xda app-developers app
Click to expand...
Click to collapse
The charger that comes with the Transformer is dual-purpose. If you plug in a Transformer tablet, it'll output the 15V to rapid-charge your Transformer. If you plug in a USB device, it'll output 5V at 2A to rapid-charge your USB device.
If you're wondering how it can tell the difference, Pin #7 on the USB3 Transformer cable is grounded -- this is how the charger can tell the difference between a Transormer and an ordinary USB device.
yannmrt said:
Good evening,
On my charger i notice it is wrting : "output 5v--2A or 15v --1.2A"
This mind that i can use the charger for any phone that charge usualy wiht 5V ?? Do the charger "swap" the voltage by him self if it's not connect to the tablet ???
I don't want to burn my HTC, but to have one charger for the tablet and the phone will be good when travelling
Thanks
Yann
Sent from my ASUS Transformer Pad TF300TG using xda app-developers app
Click to expand...
Click to collapse
In fact the charger of Asus is quite tricky. I haven't found any substitution, only stock charger can be used.
hung2900 said:
In fact the charger of Asus is quite tricky. I haven't found any substitution, only stock charger can be used.
Click to expand...
Click to collapse
the connector look to be non standard as if you put an usb extension cable it wont charge.
NixZero said:
the connector look to be non standard as if you put an usb extension cable it wont charge.
Click to expand...
Click to collapse
It's not a non-standard connector -- it's a USB 3.0 connector.
If you use a USB 3.0 extension cable, it will work. If you use a non-USB 3.0 extension cable, the charger won't see that pin 7 is grounded, so you'll just get 5V instead of 15V. There's no bi-directional communication between the two.
The Transformer will charge when it sees 12V to 15V on what's typically the 5V pin.
The Asus charger will output 15V (earlier units were 12V) when it senses pin 7 is grounded.
Also, if you'd like to build your own power supply -- get any old female USB connector, and send 12V to 15V on pin 1 instead of 5V, and you've got yourself an Asus Transformer charger. Just don't plug anything else into it, since there's no safeguard to prevent 12-15V going into a 5V device. I've painted mine orange so I don't mistake it.
Hi, my Transformer pad won't charge normally when I connect it to the power adapter direclty - it doesn't show it's charging (though I can tell it is, because after some half an hour it had 2 % more of battery)... can it be that the charger doesn't recognize the tab and gives only 5V? Why? It works normally when I charge it on the docking station (through the power adapter), and the same cable works normally when I use it to transfer media to the pad from the PC...
P.S. When conneted to the power adapter directly, the orange light on the power button of the pad doesn't go on... it only goes on when the pad is on the dock and the power adapter is plugged into it.
Any ideas?
krhainos said:
The charger that comes with the Transformer is dual-purpose. If you plug in a Transformer tablet, it'll output the 15V to rapid-charge your Transformer. If you plug in a USB device, it'll output 5V at 2A to rapid-charge your USB device.
If you're wondering how it can tell the difference, Pin #7 on the USB3 Transformer cable is grounded -- this is how the charger can tell the difference between a Transormer and an ordinary USB device.
Click to expand...
Click to collapse
krhainos said:
It's not a non-standard connector -- it's a USB 3.0 connector.
If you use a USB 3.0 extension cable, it will work. If you use a non-USB 3.0 extension cable, the charger won't see that pin 7 is grounded, so you'll just get 5V instead of 15V. There's no bi-directional communication between the two.
The Transformer will charge when it sees 12V to 15V on what's typically the 5V pin.
The Asus charger will output 15V (earlier units were 12V) when it senses pin 7 is grounded.
Also, if you'd like to build your own power supply -- get any old female USB connector, and send 12V to 15V on pin 1 instead of 5V, and you've got yourself an Asus Transformer charger. Just don't plug anything else into it, since there's no safeguard to prevent 12-15V going into a 5V device. I've painted mine orange so I don't mistake it.
Click to expand...
Click to collapse
Good info to know, Krhainos. Thanks for sharing that with us. I've been wondering about using the Asus plug for other USB devices I have and the information you supplied answered those questions. :good: