My dash cam stopped working, I suspect it's due to the internal lithium battery pack (pictured) having failed and puffed up considerably. Rather than replace it, I'd rather repair it as it's quite a nice little camera.
Ideally I'd like to put something other than a lithium pack in there as temperatures inside cars in Sydney can easily reach over 65°C in direct sunlight in Summer, which I'm sure is not good for batteries. In place of the normal 3.7v lithium battery, could I use something like a 6.3v, 2200µF, 105°C electrolytic capacitor? It only needs to last long enough for a graceful shutdown (under 30 seconds).
In addition, there is a small battery (approx. 6.8mm in diameter) soldered to the board (also pictured). I presume this is to keep time/date however I'm not ovely fussed about this as the camera gets time/date from GPS automatically and actual config is stored on the SD card. In any case, this battery is depleted. There are no voltage markings on it, but would it be safe to assume that it's a 1.5v non-rechargable? Anyone who knows a bit more about batteries might be able to advise?