Blue Sea Systems Mini Add-a-Battery Plus Kit - 65AmpThe Blie Sea Systems Mini Add-a-Battery Plus Kit is a small boat battery management system. This kit allows you to charge two batteries at or away from the dock. Usable for alternators up to 65Amp. Includes a Battery Link Charger and a m-Series Mini Dual Circuit Plus Battery Switch. m-Series Dual Circuit Plus Battery Switch Switches two battery banks simultaneously while maintaining battery bank isolation; Can combine two battery banks in the event of a low start battery; IP66 - protected against powerful water jets; BatteryLink Charger Integrated ACR provides DC charging from engine alternator; AC plug-in while at the dock; Battery temperature compensation prolongs battery life; Includes a remote LED indicator; Start isolation protects sensitive electronics from voltage sags and spikes; IP67 - protected against immersion up to 1 meter for 30 minutes;