The Schauer OB1 on-board battery charger easily keeps batteries charged in stored vehicles. It turns off automatically when the battery voltage exceeds 14.0V and back on when it drops below 13.0V. It is mounted on your battery box and includes the necessary hardware. Since it's fully automatic, it can be left on your battery indefinitely without risk of damage.
The OB1 will charge any type of lead acid battery: Conventional, maintenance free, deep cycle, gelled-type, value regulated batteries.
Includes ring terminals with 18" leads for direct battery connection and 6" grounded AC cord to connect to an AC extension.