Car batteries? Why not have an option for a truck (semi type) battery since they're bigger and have more capacity? So the electronics could once acquired, could be used with the user's choice of batteries including some the monster (and usually ungodly priced) UPS batteries sold for commercial use. The later I think, use a gel electrolyte as opposed to the "normal" acid. The unit itself shouldn't care what kind of battery it is as long as it knows the input voltage/current from the battery and what it's monitoring.
Biting the hand that feeds IT
