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Protect your auxiliary battery bank from self-discharge with the Sterling Power BM12123 12V to 12V 3A smart battery maintainer. Replacing high-draw voltage sensitive relays, this advanced unit uses silent solid-state FET technology to draw less than 1mA of standby power, making it perfect for low-current solar or wind power installations. It automatically engages at 13.3V to route excess power, providing safe current-limited trickle charging for your boat, caravan, or motorhome.
MORE»| List | $69.70 |
Protect your auxiliary battery bank from self-discharge with the Sterling Power BM12241 12V to 24V 1.5A smart battery maintainer. Replacing high-draw voltage sensitive relays, this advanced unit uses silent solid-state FET technology to draw less than 1mA of standby power, making it perfect for low-current solar or wind power installations. It automatically engages at 13.3V to step up and route excess power, providing safe current-limited trickle charging for your 24V bank.
MORE»| List | $78.20 |
Protect your auxiliary battery bank from self-discharge with the Sterling Power BM24121 24V to 12V 3A smart battery maintainer. Replacing high-draw voltage sensitive relays, this advanced unit uses silent solid-state FET technology to draw less than 1mA of standby power, making it perfect for low-current solar or wind power installations. It automatically engages at a safe threshold to step down and route excess power, providing reliable current-limited trickle charging for your 12V bank.
MORE»| List | $90.10 |
Protect your auxiliary battery bank from self-discharge with the Sterling Power BM24241 24V to 24V 1.5A smart battery maintainer. Replacing high-draw voltage sensitive relays, this advanced unit uses silent solid-state FET technology to draw less than 1mA of standby power, making it perfect for low-current solar or wind power installations. It automatically engages at a safe threshold to route excess power, providing reliable current-limited trickle charging for your 24V bank.
MORE»| List | $90.10 |