The practical and mobile (autonomous) power supply unit for electric outboards from the quality brand Minn Kota, or various consumers, especially for small boats and inflatable boats, but also for camping. An ideal box for smaller boats where the battery is not permanently installed. This battery box (battery case) with carrying handle is equipped with a built-in battery indicator that shows the current state of charge, as well as external poles with wing nuts to connect electric drives. This connection is fused with a 60A circuit breaker. Likewise, but fused with a 10A circuit breaker are 2 sockets for the supply of various consumers (e.g. a 55 watt spotlight). Both circuit breakers can be reset manually on the outside of the box.