Computer will charge any phone slowly, although the 3d does seem a bit longer.

Sent from my PG86100 using Tapatalk

Re: Very slow charging
 

Well, as long as you only rely on your computer to charge you'll always have similar results. The reason is the USB port can only provide so much power. The HTC charger does 5 volts at 1 AMP, the USB port can only do 5 volts a 500mA, or 1/2 of what the charge puts out.

Also the 3vo battery is a bit larger, which IMO, does make a difference (in extended use and charging).

So use the wall charger, it should take 1-2 hours

Re: Very slow charging
 

So by your calcs, it should take 4 hours to charge on the computer. if you leave it plugged in for 8 hours, and it is only 50% charged, something isn't right.

Brew

Re: Very slow charging
 

install battery monitor widget, it will tell you at what current the battery is charging, 400-800mah is about what i average with my evo and 3d.

Re: Very slow charging
 

Thanks, i will check it out.

Brew

I no longer have battery charging time taking to long. Now my voltage in the battery is too high and can cause overhearing. I'm exchanging my phone and hopefully it doesn't happen again.

Sent from my EVO 3D!


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Re: Very slow charging
 

how high is it getting??? anything over 4.25-4.3v is could cause a scary problem.

Re: Very slow charging
 

on my phone,
at 94% charged, the battery is at 4.2v, and at 97-99% the battery is at 4.385v. I imagine it does go higher than that before it hits 100%.

Re: Very slow charging
 

i just took mine off the charger, its at 4.23v 99%, which is good, but when i looked at the voltage graph it hit 4.34 while charging which is pretty high. i never noticed my evo go above 4.2. all lithium batters are charged by a method called cc/cv, or constant current until the pack hits the cut off voltage which is normally 4.2 then it drops the charge rate to maintain 4.2v until the charge rate drops to a set point. some lithium battery's have better cut of tolerances but 4.4 is about the top of the safe zone, some battery's will start to get very hot above 4.3v.

Re: Very slow charging
 

Currently charging at 425mah through usb port while not using the phone. GPS and Mobile background are on.