Collection: Battery Management
Reliable power starts with a well-managed battery system.
Explore marine battery management solutions designed to help boaters monitor, charge, protect and control onboard battery systems. From everyday cruising to extended time on the water, dependable battery management helps keep essential equipment powered and ready when you need it.
Shop marine battery chargers, battery monitors, battery switches, isolators, relays, charge controllers, battery accessories and power-management components for maintaining and upgrading your vessel's electrical system.
Whether you're replacing an existing component, improving battery monitoring or building a more capable onboard power system, Roam & Harbor makes it easier to find dependable marine electrical equipment for your next project.
Manage your power. Protect your adventure.
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Victron Energy
Victron VE.Bus BMS NG [BMS300200300]
Regular price $156.40 USDSale price $156.40 USD Regular price $184.00 USDUnit price / perVE.Bus BMS NGThe VE.Bus BMS NG is an all-in-one Battery Management System (BMS) for Victron Lithium NG batteries (not compatible with Lithium Battery Smart batteries), designed...
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Victron Energy
Victron SmallBMS NG [BMS400100300]
Regular price $85.00 USDSale price $85.00 USD Regular price $100.00 USDUnit price / perSmallBMS NGThe SmallBMS NG is an all-in-one Battery Management System (BMS) designed for Victron Lithium NG batteries (not compatible with lithium smart batteries). It monitors and...
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Commodore
Commodore On/Off Battery Disconnect Switch [CM-202S]
Regular price $29.99 USDSale price $29.99 USD Regular price $0.00 USDUnit price / perOn/Off Battery Disconnect SwitchThe Commodore On/Off Battery Disconnect Switch provides a reliable, durable, and safe solution for managing your marine or RV electrical systems. With a...
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Victron Energy
Victron BCD 402 Combiner Diode - 2 Batteries - 40A BCD402 [BCD000402000]
Regular price $36.55 USDSale price $36.55 USD Regular price $43.00 USDUnit price / perBCD 402 Combiner Diode - 2 Batteries - 40A BCD402Diode Battery Combiners guarantee continuous DC power to mission-critical equipment, such as an electronic engine control system....
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Victron Energy
Victron Smart BatteryProtect 48V - 100A [BPR110048000]
Regular price $137.70 USDSale price $137.70 USD Regular price $162.00 USDUnit price / perSmart BatteryProtect 48V - 100AThe Smart BatteryProtect disconnects the battery from non-essential loads before it is completely discharged (which would damage the battery) or before it...
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Egis Mobile Electric
Egis XD Series Single 500 Amp Heavy Duty Battery Switch/Mechanical Contactor [8710-1900]
Regular price $50.20 USDSale price $50.20 USD Regular price $0.00 USDUnit price / perXD Series Single 500 Amp Heavy Duty Battery Switch/Mechanical ContactorFeatures: Silver Alloy Contact Points support high ampere/full voltage switching capability versus legacy rotary style switches. Expandable:...
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Victron Energy
Victron Filax 2 Transfer Switch 110V/50Hz-120V/60Hz [SDFI0000110]
Regular price $287.30 USDSale price $287.30 USD Regular price $338.00 USDUnit price / perFilax 2 Transfer Switch 110V/50Hz-120V/60HzFilax: the ultra-fast transfer switch. The Filax has been designed to switch sensitive loads, such as computers or modern entertainment equipment from...
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ARCO Marine
ARCO Marine 500A/50mV Shunt [ST500]
Regular price $31.45 USDSale price $31.45 USD Regular price $37.54 USDUnit price / per500A/50mV ShuntShunt 500 Amp 50 mV - 500A/50mV
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