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Here's what charging with USB gets you...

When I gas up my car, it stays on FULL for 70-80 miles. Then it drops steady to EMPTY and I can drive there for at least 50 miles. Do you think my mileage is changing from full to empty? The only way to really tell is to fill it up, drive to empty, fill it again and divide the miles drive by gallons used.
 
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I was low on charge today so I used the USB to charge. I also turned off the phone to try to get to a real 100% charge. The charge light turned amber and then after a couple hours it turned green. I unplugged and turned the phone back on. It was only at 86%. I turned it off and plugged it back in to the USB--it charged a little longer, turned green but never got to 100%.

What's wrong? Help please.
 
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I was low on charge today so I used the USB to charge. I also turned off the phone to try to get to a real 100% charge. The charge light turned amber and then after a couple hours it turned green. I unplugged and turned the phone back on. It was only at 86%. I turned it off and plugged it back in to the USB--it charged a little longer, turned green but never got to 100%.

What's wrong? Help please.

There's a whooooole discussion about battery tips and tricks. What you are experiencing might (I say **MIGHT**) be fixed/improved by the supposedly HTC-sanctioned "calibrating" of your battery and phone. Go to the following link, to the VERY FIRST POST and scroll down to the last section of tips about calibrating your battery:

http://androidforums.com/htc-evo-4g/99223-possible-battery-fix-htc.html

Essentially you turn ON your phone, plug it IN and charge until green. Then TURN OFF, unplug and plug back in to charge again. You'll likely see that the light is AMBER!! Charge again with phone OFF until light is GREEN. Turn phone on and REPEAT with phone on and off while charging until when you have the phone OFF and you plug in the charger, the light is close to INSTANTLY GREEN.

I did this last night...trying to assess if there is any difference in battery life and/or battery information regarding the amount of charge present/left.
 
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USB is the only way to trickle charge the Evo according to HTC. The charge for USB probably is more complete because it is works more like a gas tank without the pressure-activated overflow shutoff. You know when the tanks full when gas spills out/USB stops charging and forces the phone to discharge a little, then tops off. Regular charging gets to the designated software-driven cutoff and stops charging just like today's gas tanks stop when tank backfill air pressure triggers the stop - the only difference is regular Evo charging won't resume while you can top off manually at the gas tank.
 
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I had made a few other changes to my phone recently that I thought was the reason i was getting significantly better battery life (from 11-> to better than 18+hr)...but I also realise that I also switched from wall to usb charge...since i made the other changes at the same time, i am not sure that i can credit this...

however, my wife, who has only chargered her evo via usb, always wondered why i had bad battery life and she always had good battery life...

just some observations...
 
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my phone is still all "stock" and this is what i got out of it today...
i've tried a couple of "battery calibrations" but can't really tell if they have helped at all. i think that i'm getting pretty good battery life... yes/no/maybe??? any comments/suggestions.... and yes, this is by charging via usb... i guess what i'm tryin to say is that if my phone lasts me during work until i get home, battery life is good enough for me... guess it would be nice to go 2 1/2 days with out a charge but i'm not gone away from an outlet that long so no personal need for that. :cool: i bought my phone because of all the amazing things it can do. i would find it bothersome after a while if everytime i picked it up i was turning this on, this off, tweaking that... so far so good...
 

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The point of this thread isn't necessarily the discrete amount of battery life you get from trickle-charging; it's that your battery life is much better when you trickle-charge than when you charge via wall A/C.

Everyone's phone usage is different. Everyone's phone is set up differently. So it's not easy to tell if someone's battery life is good or not. But all things being equal, you should see better battery life when you trickle-charge your phone.
 
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