
Add-A-Battery Kit 120 A Dual Circuit Switch & ACR | 4Boats
BSS7650
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Regular price£200.51
/
Tax included.
Add-A-Battery Kit pairs a Dual Circuit Plus™ switch with an Automatic Charging Relay (ACR) to manage and charge two batteries from one source with simple ON/OFF control. Acts as a dual battery switch and marine battery isolator to share charge without rewiring or regulator changes. See related Battery Switches for compatible accessories.
- Dual Circuit Plus™ switch isolates engine and house circuits and permits combining batteries for emergency starts
- Automatic Charging Relay (ACR) links batteries during charging and isolates them while cranking
- Shares charge between batteries without regulator adjustment or rewiring
- 120 A capacity
- Tin‑plated copper studs for better conductivity and corrosion resistance
- Easy ON/OFF operation — turn ON when aboard, OFF when leaving
- Weight: 1.07 kg (2.36 lb)
Compact, reliable solution for small craft needing coordinated charging and emergency battery combining.

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