Description: The MULTI BATTERY ISOLATOR (BI) is designed to eliminate the multi-battery drain problem. An isolator acts as a check valve between the batteries, preventing current from flowing from one battery to another. Each battery is isolated and acts as an independent power source. The balance circuit electronic isolator is absolutely the only way that proper isolation and control can be accomplished, solving every multi-battery problem. Model DescriptionAmp ratingAlternatorBatteryRemark070A1B27012070A1B37013090A1B29012120A1B212012120A1B2E12012E Excitation terminal160A1B216012200A1B220012270A1B227012