battery heat up question
Today I had a fully charged battery went into my car plugged my car charger in and it showed it was charging. I used the sprint navigation for about 20 minutes and when I got a call about 10 minutes later noticed that my battery had drained to about 60%. Nothing else was running just sprint nav while charger was plugged into phone. I thought I read somewhere where this has an auto cut off feature if phone gets to a certain temperature. Can anybody confirm this? Is my phone defective? If this is the case can it be fixed with a reg edit and is it recommended to even do that if so. I know I just spewed out a bunch and I sincerely appreciate any insight into this problem. Thanks
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