|
I recently bought a 12V 10AH Li-ion battery and charger off ebay shipped for $58.
Theoretically it will give the same performance as a 20AH Lead acid battery, since you can only discharge these to about 50% if you don't want to kill it (unless it is a marine deep cycle lead acid battery). The Li-ion batter is also about one fifth the size and weight of a lead acid battery.
I haven't tested it yet, but with battery technology being developed there are some good options out there particularly if you look in the RC world for batteries - the latest LiFePO4 batteries are good for over 2000 recharge cycles for example.
|