12V 70 AV li-ion battery 836 Wh One of our most popular batteries! The 12V70 AV is ideally suited for powering electric motors and larger depth gauges and fishfinders. This battery weighs only 4.9kg, operates at 12V, has a capacity of 70Ah (836Wh) and features a digital charge status indicator. The battery is completely maintenance-free and has as many as 1000 charge-cycles. That means 1,000 charges and discharges. It is significantly lighter than a comparable lead battery and has a much lower annual loss. Thanks to the built-in Battery Management System, you never have to worry about discharging the battery too deeply and damaging it.