Blue Sea Systems 7650 Add-A-Battery Kit

Adding a second battery to the electrical system prevents the unintended discharge of the engine start battery. Blue Sea Systems popular Add-A-Battery kit was primarily designed for boats with alternator output of 120A or less. When installed, the Add-A-Battery isolates the start battery from the house loads which prevents the discharge of the start battery. The Add-A-Battery offers a simple way to control the charging and battery switching of two battery banks. The E-Series Dual Circuit Plus Battery Switch simplifies the switching while the SI-ACR automates charging between two batteries.

Simplifies switching. Isolates engine and house circuits. Combines batteries for emergency starting
Tin-plated copper studs for maximum conductivity and corrosion resistance
12/24 Volt DC 120 Amp Automatic Charging Relay (PN 7610) automatically combines batteries during charging. Isolates batteries during engine cranking and when not charging
Includes E-series dual circuit plus battery switch (PN 5511E)
Shares the charge between two batteries more efficiently than a battery isolator