Argodiode 100-3AC 3 batteries 100A Retail ARG100301000R

Victron Energy Diode Battery Isolator Argo 1003AC. Three batteries, 100A

Diode battery isolators allow simultaneous charging of two or more batteries from one alternator, without connecting the batteries together. Discharging the accessory battery for example will not result in also discharging the starter battery.