Razr v3xx stopped working!?

Just yesterday the phone was fine, but i went out to the car today and it doesnt show any signs of life! i have taken out the battery, the sim card, left it plugged in, I have tried everything I can think of. And to make it even more weird, I switched the battery into my old razr and it worked fine! turned on immediately. I then put the older battery, now dead, into the new razr and it charged and worked! WHAT IS GOING ON?
 
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