Charging The G3

[tardus]

Not true. When I first opened my G3 I forgot to grab the new charger out of the box. I had an old Samsung 1A charger and a CHEAP, LONG cable (from china) that worked fine on my S3 for an overnight charge. I never thought about it. Plugged the G3 in and went to bed. The next morning my brand new phone was DEAD. Eventually I ordered one of those USB Volt/Amp checkers. Turns out that skinny assed long cable was only putting about .1A out. The phone used more power than it was getting. I tried an old cable that came with the sammy charger that we thought was going bad. Sure enough, same thing. Grabbed the nice, new LG *cable* (not the charger) and got .8A. Put it on the LG charger and got 1.2-1.5A. Put a crappy cable on the LG charger and still only got .1A or so. Crappy/old cables can make a HUGE difference.

I did some tests recently on a bunch of micro USB cables that I have. Most of them charged at 1.4a. A few charged at half that. If your cable was only charging .1a that is defective/trash. I've read that a different pin layout is responsible for the lower amp. I still use the bad ones on old devices like Samsung S3. For that they work fine. Also, USB cable extenders - all the ones I tested, knock down the amps of the "good" to to that of the "bad" cables!

 

[meyerweb#CB]

OK, a couple of things:

Charging off a USB port on a computer will always be slower than charging off an AC adapter. USB ports, unless specifically marked, supply only 500 mA (1/2 amp) of current, max. AC chargers can supply much more than that.

USB 3 ports won't charge a USB 2.0 device significantly faster than a USB 2.0 port. If you want a rapid charge, use a wall charger.

All USB cables are not equal. Most are fine for charging off an AC charger, but the really thin cables (like your retractable one) have really thin wires. The thinner the wire, the higher the resistance, and the less current gets passed through to your phone. Using your PC's USB port, the cable probably may be limited current even further.

 

[tardus]

OK, a couple of things:

Charging off a USB port on a computer will always be slower than charging off an AC adapter. USB ports, unless specifically marked, supply only 500 mA (1/2 amp) of current, max. AC chargers can supply much more than that.

USB 3 ports won't charge a USB 2.0 device significantly faster than a USB 2.0 port. If you want a rapid charge, use a wall charger.

All USB cables are not equal. Most are fine for charging off an AC charger, but the really thin cables (like your retractable one) have really thin wires. The thinner the wire, the higher the resistance, and the less current gets passed through to your phone. Using your PC's USB port, the cable probably isn't the issue, but with a higher output charger it could be the weak link.

But some PC's have intelligent charging. Only on the USB3 (blue) ports. Better success in general by using ports on the back not front panel.

 

[meyerweb#CB]

If the USB port isn't labelled as one that supplies higher power (Dell puts a littel lightning bolt next to the high power ports, for example), the phone will limit charging current to 500 ma. Period.

 

[bgeneto]

I did some tests recently on a bunch of micro USB cables that I have. Most of them charged at 1.4a. A few charged at half that. If your cable was only charging .1a that is defective/trash. I've read that a different pin layout is responsible for the lower amp. I still use the bad ones on old devices like Samsung S3. For that they work fine. Also, USB cable extenders - all the ones I tested, knock down the amps of the "good" to to that of the "bad" cables!

Also did some charging tests with my LG G3... But my conclusions is different from ours! I don't think that the best rated Amazon's USB charging only cable
is trash and when connected/used with the original LG G3 charger outputs only 1.0A while the original LG cable outputs 1.8A, confirming what the other poster said here! I don't know why, but it seems that only with OEM charger and cable you can go above 1.0A. Found otherwise? Post your photos/proof!