Quote:
Originally Posted by Juggalo_X
heat kills batteries. its a know fact that's why it affects battery life. the heat shield helps keep the heat from leaking to the battery area. its 100% true that the lack there of a heat shield can and will affect battery operation and performance.
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High temps affecting battery performance is academic, but if the shield is behind the keypad, I don't see how it can keep the heat from transfering to the battery. Unless there is an air gap or ventilation, a shield can become a heat sink, which can AIDE in transfering heat from one side to the other.
In any event, when the electronics (lower) portion of the phone gets hot, the battery's temp does not go up significantly. I've run two phones with the covers off, along with various routines, and observed that the battery will mostly increase in temp due to high-drain (CPU, radio transmission, etc.), and not from conductive heat. I spent several hours with an infrared pyrometer measuring both the electronics portion and the batteries and found that the batteries stay relatively cool.