1This battery power center contains an easily accessible external battery terminal that connects the trawling motor lead and charger lead to the battery terminal without opening the battery case. 2Suitable for car, Rv, Yacht, ship, stem board( a ship without a battery bay), protect your battery. 3Can accommodate power battery, multi?function battery box, contains handle, easy to handle, with button switch, practical and convenient, voltmeter display screen, real?time voltage detection. 4Embedded battery coulombmeter, press a button to measure battery level (excluding batteries). 5Integrated circuit breakers, amplifiers and 60pcs 10amps circuit breakers, protective motors and other accessories from electrical damage, anti?skid pads allow your battery box to remain in place. 6USB charger and attachment ports, provide a USB charger and a 12V accessory port to facilitate connecting various Dc accessories.