Database Info

[Q] Can't charge from Computer USB cable

Hey all,
I often charged my g1 through a USB cable from my computer (rather than from the wall). When I do this for the g2x, it doesn't seem to charge. It either retains it's charge, slowly discharges (more slowly than if it wasn't plugged in), or if I am using an intensive app (e.g. pocket legends) it will keep discharging quickly. Is this normal or is this just me/my phone?
I am using the cable that came with the phone that I also use to charge through the wall (so not a cable issue).
Thx

It charges fine through my computer but keep in mind it will be a slower charge on any device. Maybe it's more slow than it should be on yours.

davem666 said:
Hey all,
I often charged my g1 through a USB cable from my computer (rather than from the wall). When I do this for the g2x, it doesn't seem to charge. It either retains it's charge, slowly discharges (more slowly than if it wasn't plugged in), or if I am using an intensive app (e.g. pocket legends) it will keep discharging quickly. Is this normal or is this just me/my phone?
I am using the cable that came with the phone that I also use to charge through the wall (so not a cable issue).
Thx
Click to expand...
Click to collapse
Did you try using other USB ports on your computer?

I've tried multiple ports and multiple computers (not multiple cables cause I only have 1, but the cable does charge through the wall adapter). I've left it plugged in to the computer for the past 2 hours with minimal use (basically just checking battery monitor occasionally) and I am losing ~2% charge an hour (I'll post a screen-cap after a few more hours of "charging").

mine charges.. very slow.

You should never charge your phone from a computer usb cable. There isn't enough amps to charge your phone while it is on and running. If you play games or listen to music while connected and charging from your computer's usb cable you will still run down the battery. The charger that came with the LG G2x is 1Amp or 1000MA! My previous Samsung Galaxy was around 700MA. Best way to charge your phone is to turn it off while it is plugged to the AC adaptor and use a high amp output charger like the stock charger. If you use generic ones with lower amp output like 500Ma, it will take longer.

grenademasta said:
You should never charge your phone from a computer usb cable. There isn't enough amps to charge your phone while it is on and running. If you play games or listen to music while connected and charging from your computer's usb cable you will still run down the battery. The charger that came with the LG G2x is 1Amp or 1000MA! My previous Samsung Galaxy was around 700MA. Best way to charge your phone is to turn it off while it is plugged to the AC adaptor and use a high amp output charger like the stock charger. If you use generic ones with lower amp output like 500Ma, it will take longer.
Click to expand...
Click to collapse
The chargers for the gs and g2x both have the same amps. And Hz.
Where did you find that info?
Sometimes I still use my gs charger on myg2x. Both charge in the same amount of time.
But if it is true ill stop that right now.
Sent from my LG-P999 using XDA Premium App

Battery charging, 500mah (slow) or 1000mah (fast) any difference in performance?

I've noticed that charging with 500mah charger, charges the battery MUCH slower than a 1000mah (1amp) charger, which charges really fast. I'll need to time it, but I'm thinking the 1000mah charger charges the stock battery in less than 2 hours, where as the 500mah charger takes many hours, I usually let it charge overnight.
My question is, is there any performance gain to slow charging vs fast charging? ie: slow charging giving a deeper charge, vs fast charging?
any opinions?

i use a 2amp charger i had already that fully charges the O3D in around half an hour/45 mins. get the same runtime whether i use that or the stock charger.

hefonthefjords said:
i use a 2amp charger i had already that fully charges the O3D in around half an hour/45 mins. get the same runtime whether i use that or the stock charger.
Click to expand...
Click to collapse
Any chance of a link to this charger, I'd really like that sort of charging speed.
Pete

My guess would be anything that would charge an iPad... those require like 2.1amp, so that would be a 2amp usb charger.... I've seen 2.1amp home chargers, car chargers, etc... all because of the ipad I'm guessing.

Its not that simple. Any device that uses USB for charging can only pull 500ma, that's a universal agreement. To get around this each manufacturer uses a method of "informing" their device that it is connected to a charger that can supply more current (HTC shorts the data leads in the supplied charger I don't know what LG does). I have a 1amp car charger but it still only gives 500ma but the genuine LG charger gives an amp because the phone "knows" it can supply more.
I'm going to stick a test meter into my LG chargers over the holidays to see how the data leads are connected.
Pete
Sent from my LG-P920 using xda premium

The charger i have is a noname brand. I bought it from walmart for 6 quid. It also came with a 2amp car charger and a micro usb cable.
Micro usb cables are not standardised like that. Ive never heard of such a thing at all. As far as i know most phones will "fast charge" if they dont detect a data connection and dump as much current as they can into the battery so you can pretty much present them with whatever current you like and the charge time will just get faster. There is probably a hardware limit to that somewhere in the charge circuit but i dont know what the limit is. 2amps is the highest power usb charger ive seen but its not exactly aomething i regularly keep an eye out for.
Sent from my LG-P920 using xda premium

Slow charging is always better as this will allow the optimal number of battery cycles before the battery's capacity will start to degrade.
So if you only ever slow charge then your battery will have a longer life cycle.

Charger or PC USB

Is any difference charging my DHD form PC's USB then charging from original charger ?

I may be wrong, but I think wall charger provides more power than USB or car dock
Sent from my Desire HD using xda app-developers app

I've read many times that using USB, you battery might last longer than using the wall charger. I've never noticed this...
USB seems a bit slower than the wall charger but other than that seems the same.

Install Battery Monitor Widget, and you will see how much current each option gives at different levels of charge.
To be exact, the device DRAWS current, it's not a question of the highest output being the best. If the device can't receive more juice, the additional output cannot be used.
When the battery is nearly empty you will see the biggest current draw - as the charge gets closer to 100%, the amount the device draws drops, until it reaches 0mAh on full charge.
My OEM wall charger provides up to 1000mAh, and the PC USB provides 500mAh, you will initially charge the device faster with the wall charger, until the current drawn by the device drops beneath 500mAh - after which point they will charge equally fast.
That, in the case of my phone (with a Mugen 1500mAh battery) happens around the 60% charge mark. So if the charger outputs are as mentioned above, you wouldn't see any difference in the rate of charging after 60%

HTC wall charger can output 1A with data pin short-circuit. PC USB can output 500~600ma or 1A on some laptop but no data pin short-circuit.
Fast charge mode is 900mA. It is on when data-pin short-circuit is detected OR on a fast-charge enabled ROM (or say, kernel).
Otherwise, it only pull 500ma.
Use your battery in your way. Charge it when you like. DHD can replace battery.

Stating the obvious BUT, of course, you can access your phones storage when connected to PC via USB for charging!
---------- Post added at 10:30 AM ---------- Previous post was at 10:13 AM ----------
Also, be careful of using unpowered USB hubs - there may not be sufficient power on the port to charge effectively.

I think charger will have more power. :cyclops:

A wallcharger will always push more amps to the phone.
Don't get confused by people telling you, that wallcharging will damage your battery! That's just not true.
Every phone has an inbuild unit, that controls the amps going to the battery.

Charger outputs more power and therefore it charges faster. Some kernels have the option called "fast charge" which allow you phone to drain more power from the PC and allow it to charge almost as fast as via charger. You can not access files while connected to the PC if the "fast charge" option is enabled.

As already stated above, AC charging is generally faster.
Now many people say that charging by USB will make your phone last longer, but from my personal experience is quite opposite, plus, usb charging is easily interrupted (PC hibernating, stand-by, restarting, etc...). if you are comfortable with both ways (neither PC nor wall outlet too far away), use wall AC.

interesting, i noticed charging via AC (wall) gives my dying battery that extra oomph and seems to make my phone last longer in the day

I think Charger is always best than PC charging.
Its fast.

AC charging is faster due to a higher voltage and ma charge rate
USB uses a much more lower voltage and ma charge rate, it is true that USB charging is SLOWER and a myth is that USB charging does make your battery last longer.
On sense 2.1 I noticed my battery last 4 days with low - medium ussage because I only charged with USB but now I charge with AC with medium ussage my battery lasts a day.
With kernel tuner you can add a 4x4 widget which can tell you the voltage and mah raise / drain
Sent from my HTC Desire HD using xda app-developers app

I think the power if you charger the mobile from Charger it will be faster more than PC charging

-SmOgER said:
As already stated above, AC charging is generally faster.
Now many people say that charging by USB will make your phone last longer, but from my personal experience is quite opposite, plus, usb charging is easily interrupted (PC hibernating, stand-by, restarting, etc...). if you are comfortable with both ways (neither PC nor wall outlet too far away), use wall AC.
Click to expand...
Click to collapse
+1. I vote AC charging

Charging with Original charger is awesome
Charging from Orginal charger takes less time then chargin from a pc usb

Charging from charger is faster, but charging from USB is more stable, as far as I know...Because it has a balanced voltage all the time. Not sure though. Just heard from somewhere.

[Q] Charging Too Slow Now

I have had my Verizon Galaxy S4 since February of this year. I've been using the stock Samsung AC charger that came with it. It's always charged the phone pretty fast if I wasn't using the phone. It would charge about 15% in 20 minutes. Now it's only charging about 3 or 4% in 20 or 30 minutes. Now I didn't do anything different to my phone. I've been on this same ROM for over a month and this is just now a problem in the last week. My wife has the exact phone and charger that I have and when I use her charger it charges just as rapidly as mine used to, so I know it's not the usb port on my phone itself. I haven't dropped or damaged my charger at all in any way either.
Does anyone have any ideas about why this is happening?

If it charges fast on you wife's charger you've pretty much answered your own question.
Try using her cable with your charger, if it still charges slow then get a new charger.

gadget! said:
If it charges fast on you wife's charger you've pretty much answered your own question.
Try using her cable with your charger, if it still charges slow then get a new charger.
Click to expand...
Click to collapse
Ok, I'll give that a shot. Thanks.

I had the same problem too ! Did a full battery reset and everything is going good now !
You have to charge it for 12 hours and drain your battery until your phone don't boot. Charge it and here you are !

Yeah these devices act funky every blue moon. My wifes didn't even recognize ANY oem charger for a week. Only detected others as USB devices causing slow charge rate. Removing dust, component cleaner, fresh install, all did no good. Eventually it just resolved the issue itself. All chargers work normally again.

change the usb cables
I also had the same problem before. I'd been using the original charger and usb cable and noticed that charging takes a lot of time than normal.
I found that it's on the usb cable. I accidentally found it when I used gsam battery monitor. It displays the current being received by your phone when charging. Using the original usb cable, it only gets around 600mah. I tried another usb cable (from a previous Samsung device) and now my phone gets 1,900mah (closed to the charger output of 2,000 mah).
Every since I changed the usb cable, my charging is fast now. Hope this helps.

I would try a new cable and Charger that is rated 2.1 amps or better if will be charged real quick

elchingon said:
I would try a new cable and Charger that is rated 2.1 amps or better if will be charged real quick
Click to expand...
Click to collapse
I noticed that using the Pure Nexus rom my charging time became significantly faster. In fact I can get a full charge from nearly dead in just over an hour. This is using the charger and cable that came with the phone.

I had the same problem too ! Did a full battery reset and everything is going good now !
MT tenso

How do you make full battery reset?

The charging rate is based on the output rating of the charger, which is determined by the resistance value between the Data+ and Data- USB pins. If you use a cheap cable with high(er) internal cabling resistance, that will throw off the detected charger output capacity rating, and knock you down to a lower charging current and longer charging time.
Also, one time, even with the original charger and original cable, I couldn't charge at anything more than the default USB 500mA. I ended up having to power off the phone, and power it on again, which fixed the charging current and speed problem.

Install this app & check if it is getting charged at max current; anything less than 1200 mA when screen on & 1900 mA when screen off, you need to change your cable or charger
https://play.google.com/store/apps/details?id=com.abmantis.galaxychargingcurrent.free
Sent from my GT-I9500 using Tapatalk

I read somewhere that if you activate airplane mode the battery is charging faster.

[Q] Anyone know of an app or method to trigger Fast Charging?

I know Adaptive Fast Charging doesn't kick in unless the battery is very low - less than 20%, I believe. And, yes, I have the 15 watt charger(s) that supports AFC/QC2.0
Does anyone know of a way, or if it's even possible, to trigger the phone to kick in fast charging at low, but not painfully low, rates?

Hi
My S6 always charges at the quickest speed possible because when I connect my Samsung Charger the phone tells me I have connected the fast charger and I know it is charging quickly because if I use another charger the time for a full charge will increase significantly. Are you using the official fast charger?

Yes, I've always experimented with the high-power charger that came with the phone.

Fast charging will speed up or slow down automatically based on how charged the battery is. The emptier the battery, the faster it will charge. This charge will slow down gradually as the battery fills up. I don't think there's a way to facilitate this, and even if there was, it probably would not be recommended to do as it might damage the battery.

Fast Charging is a concept, that comes into play when you are connected to the USB port of your PC. Typically when connected in MTP mode (or PTP FWIW), Phone charges slowly in order to prevent damage to the usb port. Certain kernels can permit fast charge provided your laptop has fastcharge usb.
For Wall charging, Rapidcharge technology does exist but requires original samsung charger. With any other OEM charger, it'd be a matter of luck since it'd need to have that 11th pin on the microusb.
Everything else that @Japultra is correct.

I'm almost too embarrassed to admit this, but it was the micro USB cord that wasn't letting my phone avail itself of the high-power adapters. I came across a thicker USB cable and, thinking/hoping that thicker cable also translated to higher gauge conducts, decided to try it out with my phone that was at 65%. Yup. The phone now indicated "fast charging".
I appreciate your forbearance, folks!

bwb8771 said:
I'm almost too embarrassed to admit this, but it was the micro USB cord that wasn't letting my phone avail itself of the high-power adapters. I came across a thicker USB cable and, thinking/hoping that thicker cable also translated to higher gauge conducts, decided to try it out with my phone that was at 65%. Yup. The phone now indicated "fast charging".
I appreciate your forbearance, folks!
Click to expand...
Click to collapse
So the original cable that came with the s6 wasn't working for you?