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HTC Rezound: still using power when powered off

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On my prior phone I used a USB 2.0 compatible device charger from Griffin.  It has an LED on it, that is green when no charging current is being pulled from it, and red when a charging current is being pulled from it.  Using this charger, I figured out RIM's Blackberry (my prior phone), will charge for several hours more, after the blackberry indicates it is done charging. 

I was interested how the HTC Rezound would do, so I tried charging it on it one weekend, and an overnight and half a day later, the LED was still red.  The phone was in sleep mode, so the screen was off.  Usually enough to get a good charge.   I tried it again and had the Rezound powered off.  After more than 12 hours on the charger while turned off, the LED was still red. 

I warranty swapped the phone figuring it was a defect.

I tried it again today, a different HTC Rezound, and I used the Griffin USB 2.0 compatible charger I got for my wife.  Exactly the same as mine.  I tried it again.  It should already be fully charged, so I powered it off, and pulled the battery for a couple seconds, and put back in the battery, making sure I did not turn the phone on.  The LED was green.  For about a second.  Then it turned red.  After two different phones, and two different USB port chargers (but same MFG and model), I have to conclude the HTC Rezounds are consuming enough power when turned off (not sleeping, but powered off), that they actually pull a charging current when you plug them in.   

Anyone else run into this, or have some information that might explain what is going on in the phone? 

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Re: HTC Rezound: still using power when powered off

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I should mention I have not tried a replacement battery yet.  That will be the next step.  Repeat the test with a new battery.  The battery I am using now though has only been actively used in a phone for a couple weeks or so. 

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