Don't forget that the battery has to more or less operate and survive in a temperature range of 50 below zero to 180 degrees. If not, operating it on a cold day in northern Maine, or leaving it in the sun in southern Florida will break it. All this and above, and you need to be able to BEAT current low priced battery options like car batteries, which perform sufficiently well.
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Don't forget that the battery has to more or less operate and survive in a temperature range of 50 below zero to 180 degrees. If not, operating it on a cold day in northern Maine, or leaving it in the sun in southern Florida will break it. All this and above, and you need to be able to BEAT current low priced battery options like car batteries, which perform sufficiently well.