Don't get stranded with a dead battery. Compact, simple way to control the switching with the m-Series Dual Circuit Plus Battery Switch and automatically share a single source of charging between two batteries with the Mini Automatic Charging Relay which manages current from alternators up to 65A found on most outboard and many Inboard engines.

The ADD-A-BATTERY is as simple to operate as an ON-OFF switch, yet effectively manages the switching and charging of two batteries from a single charge source

Dual Circuit Plus™ Battery Switch

• Simplifies switching
• Isolates engine and house circuits
• Combines batteries for emergency starting
• Tin-plated copper studs for maximum conductivity and corrosion resistance

 ACR Automatic Charging Relay

• Automatically combines batteries during charging
• Isolates batteries during engine cranking and when not charging
• Shares the charge between two batteries more efficiently than a battery isolator
• Allows efficient dual battery charging without needing regulator adjustment or rewiring