Blue Sea 7649 Mini Add-A-Battery Kit [7649] Double Sheave(70mm) Patented in-line design - provides

Patented in-line design - provides ventilation for engine compartments

Dimensions: 2" x 2'

Manual hand crank

Diameter Ø (in) - 19 15/16

Boat Size: 40'

Blue Sea 7649 Mini Add-A-Battery Kit [7649] Double Sheave(70mm) Patented in-line design - provides7649 Mini Add A Battery What does the Mini Add A Battery do? Adding a second battery prevents getting stranded with a dead battery by isolating the start battery from the house loads that can quickly discharge a battery. The Mini Add A Battery offers a compact, simple way to control the switching with the m Series Dual Circuit PlusT Battery Switch and automatically share a single source of charging between two batteries with the Mini ACR Automatic