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Just got an LG G2. This thing charges slooooow

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By brian85, Senior Member on 20th May 2014, 11:08 AM
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Bought it used off eBay so not sure if I have OEM parts, but I went from 37% battery to 70% in 4 hours. Slowest charging phone I've ever used.

I did a Google search and found this is a common problem and you need the correct charger and cable. My problem is I can't find any recent information on this and with the stuff I read, there was never a clear answer given.

Has this issue ever been figured out and if so, what charger and cable do I need to get?
 
 
20th May 2014, 11:20 AM |#2  
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The original charger is rated at 1.8A so look for that.
20th May 2014, 11:35 AM |#3  
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Check your lock screen if it says slow charging.
20th May 2014, 01:48 PM |#4  
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Ok so I used my moto x USB cable and the g2 turned into the fastest charging phone I've ever had. I didn't know a cable could make a difference. Same wall charger.

So is there a certain type of cable that I need?
20th May 2014, 03:00 PM |#5  
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It's just the way the pinout is on the cable I believe, if the phone sees it as a standard USB cable such as those used to connect it to a PC, it will go into slow charging mode as to not overdraw the USB port on the computer. The stock charger, and from some other phones, allow the charging at the full ~2A rate.
20th May 2014, 03:12 PM |#6  
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It isn't a 'problem' at all with the phone. As with any device, technically you should always use the accessories made specifically for it to get the best functionality. Or, at least buy a 3rd party item that is made to the same spec.
20th May 2014, 09:33 PM |#7  
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Quote:
Originally Posted by brian85

Ok so I used my moto x USB cable and the g2 turned into the fastest charging phone I've ever had. I didn't know a cable could make a difference. Same wall charger.

So is there a certain type of cable that I need?

As you've discovered, the G2 (and many other USB devices) can request far more than the 500ma provided by traditional computer USB ports. For non-Apple devices (they broke the spec -- thanks Steve!), shorting the D+/D- pins will indicate to the device that it's plugged into a high power port, allowing it to request far more amperage.

There are specific "USB charging cables" that short these pins for you, if you don't feel like rolling your own. I bought this one:

http://www.amazon.com/Mediabridge-US.../dp/B009W34XMM
22nd May 2014, 05:22 AM |#8  
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You haven't experienced slow charging until you have a nexus 7

Sent from my LG-VS980 using Tapatalk
22nd May 2014, 05:24 AM |#9  
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Quote:
Originally Posted by spinninbsod

You haven't experienced slow charging until you have a nexus 7

Sent from my LG-VS980 using Tapatalk

It's your cable. Almost guarantee it. All cables are not created equally.
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