Quote:
Originally Posted by pbb
You could just buy some Ni-Mh AAs if you want to keep things small. Or just get at 12v lead-acid battery.
I bought one of those blue Li-Po batteries of eBay (security camera battery), but killed it pretty quick by letting the charge get too low. Those are also all way below their stated capacity, and I think pose higher risks of fire than other batteries.
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if you go with LiPo you have to make sure to get enough capacity for what you are doing. A better bet is LiIon, it is a little heavier but less chance of fire but still much lighter than lead acid. If you go LiPo you can't let them get to less than 3volts per cell or you kill the battery for good.