Battery Management – Optimize & Protect Your Boat’s Power System
Take control of your boat’s power with reliable battery management systems. Whether you need a battery switch for safe power distribution, a monitor to track charge levels, or an isolator to prevent draining, we’ve got the marine-grade gear to keep your electrical system running smoothly. Our collection features battery isolators, switches, monitors, and smart management systems built for efficiency, safety, and durability in harsh marine environments. Plus, we ship free across the U.S., so you can upgrade hassle-free and keep your boat powered up for every adventure! ⚡🔋⚓
⛵️ Free U.S. Shipping ~ Set Sail on Us! ⚓️
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Blue Sea 1408 M-Series Dual Circuit Plus, Main + 3 Positions CLB Vertical [1408]Vendor:Blue Sea 1408 M-Series Dual Circuit Plus, Main + 3 Positions CLB Vertical [1408]
- Regular price
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$229.99 - Regular price
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$335.43 - Sale price
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$229.99
Sale -
Commodore 4-Position Compact Dual Battery Selector Switch [CM-402S]Vendor:Commodore 4-Position Compact Dual Battery Selector Switch [CM-402S]
- Regular price
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$49.99 - Regular price
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- Sale price
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$49.99
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Commodore On/Off Battery Disconnect Switch [CM-202S]Vendor:Commodore On/Off Battery Disconnect Switch [CM-202S]
- Regular price
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$29.99 - Regular price
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- Sale price
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$29.99
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BEP Remote Operated Battery Switch w/Optical Sensor - 500A 12/24v [720-MDO]Vendor:BEP Remote Operated Battery Switch w/Optical Sensor - 500A 12/24v [720-MDO]
- Regular price
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$209.99 - Regular price
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$322.50 - Sale price
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$209.99
Sale -
Perko Medium Duty Battery Selector Switch - 250A Continuous [8501DP]Vendor:Perko Medium Duty Battery Selector Switch - 250A Continuous [8501DP]
- Regular price
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$62.99 - Regular price
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$102.81 - Sale price
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$62.99
Sale -
Perko Medium Duty Battery Disconnect Shut Off/On - 250 Amp Continuous, 12-32VDC [9601DP]Vendor:Perko Medium Duty Battery Disconnect Shut Off/On - 250 Amp Continuous, 12-32VDC [9601DP]
- Regular price
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$71.99 - Regular price
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$98.94 - Sale price
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$71.99
Sale -
Perko 8503DP Medium Duty Battery Selector Switch w/Alternator Field Disconnect w/o Key Lock [8503DP]Vendor:Perko 8503DP Medium Duty Battery Selector Switch w/Alternator Field Disconnect w/o Key Lock [8503DP]
- Regular price
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$88.99 - Regular price
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$123.70 - Sale price
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$88.99
Sale -
Victron Replacement Shunt f/BMV Monitors - *PCB is NOT Included* [SHU500050100]Vendor:Victron Replacement Shunt f/BMV Monitors - *PCB is NOT Included* [SHU500050100]
- Regular price
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$22.10 - Regular price
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$26.00 - Sale price
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$22.10
Sale -
Victron Orion-TR Smart DC-DC 12/24-15 15A (360W) Isolated Charger or Power Supply [ORI122436120]Vendor:Victron Orion-TR Smart DC-DC 12/24-15 15A (360W) Isolated Charger or Power Supply [ORI122436120]
- Regular price
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$243.95 - Regular price
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$287.00 - Sale price
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$243.95
Sale -
T-H Marine 42" Battery Strap w/Stainless Steel Buckle [BS-1-42SS-DP]Vendor:T-H Marine 42" Battery Strap w/Stainless Steel Buckle [BS-1-42SS-DP]
- Regular price
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$13.75 - Regular price
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- Sale price
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$13.75
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Blue Sea 9003e e-Series Battery Switch Single Circuit ON/OFF [9003E]Vendor:Blue Sea 9003e e-Series Battery Switch Single Circuit ON/OFF [9003E]
- Regular price
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$51.99 - Regular price
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$59.58 - Sale price
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$51.99
Sale -
T-H Marine 54" Battery Strap w/Stainless Steel Buckle [BS-1-54SS-DP]Vendor:T-H Marine 54" Battery Strap w/Stainless Steel Buckle [BS-1-54SS-DP]
- Regular price
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$16.49 - Regular price
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- Sale price
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$16.49
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BEP Pro Installer 400A Double Pole Battery Switch - MC10 [770-DP]Vendor:BEP Pro Installer 400A Double Pole Battery Switch - MC10 [770-DP]
- Regular price
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$71.99 - Regular price
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$84.48 - Sale price
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$71.99
Sale -
Blue Sea 7622100 ML ACR Charging Relay 12V 500A w/Manual Control Deutsch Connector [7622100]Vendor:Blue Sea 7622100 ML ACR Charging Relay 12V 500A w/Manual Control Deutsch Connector [7622100]
- Regular price
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$233.99 - Regular price
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$307.99 - Sale price
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$233.99
Sale -
Blue Sea 7623 ML-Series Heavy Duty Automatic Charging Relay - 24V [7623]Vendor:Blue Sea 7623 ML-Series Heavy Duty Automatic Charging Relay - 24V [7623]
- Regular price
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$228.99 - Regular price
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$332.84 - Sale price
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$228.99
Sale -
BEP Remote On/Off Key Switch f/701-MD & 720-MDO Battery Switches [80-724-0006-00]Vendor:BEP Remote On/Off Key Switch f/701-MD & 720-MDO Battery Switches [80-724-0006-00]
- Regular price
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$89.99 - Regular price
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$115.50 - Sale price
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$89.99
Sale -
Xantrex 30A MPPT Charge Controller [710-3024-01]Vendor:Xantrex 30A MPPT Charge Controller [710-3024-01]
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$268.99 - Regular price
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$346.84 - Sale price
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$268.99
Sale -
BEP Panel-Mounted Battery Mini Selector Switch [701S-PM]Vendor:BEP Panel-Mounted Battery Mini Selector Switch [701S-PM]
- Regular price
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$48.99 - Regular price
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$54.87 - Sale price
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$48.99
Sale -
BEP Dual Operation VSS Switch Cont Motorized - 12V - 275A [701-MDVS]Vendor:BEP Dual Operation VSS Switch Cont Motorized - 12V - 275A [701-MDVS]
- Regular price
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$183.99 - Regular price
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$281.86 - Sale price
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$183.99
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BEP Remote Operated Battery Switch - 275A Cont [701-MD]Vendor:BEP Remote Operated Battery Switch - 275A Cont [701-MD]
- Regular price
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$173.99 - Regular price
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$246.58 - Sale price
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$173.99
Sale -
Blue Sea 9160 Paralleling ML Series Link Bus [9160]Vendor:Blue Sea 9160 Paralleling ML Series Link Bus [9160]
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$20.96 - Regular price
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- Sale price
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$20.96
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Victron M8 Circular Connector 3-Pole BMS BTV Extension Cables - Pair - 1M [ASS030560100]Vendor:Victron M8 Circular Connector 3-Pole BMS BTV Extension Cables - Pair - 1M [ASS030560100]
- Regular price
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$33.15 - Regular price
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$39.00 - Sale price
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$33.15
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Blue Sea 8686 Dual-Battery m-Series, Dual Circuit Plus [8686]Vendor:Blue Sea 8686 Dual-Battery m-Series, Dual Circuit Plus [8686]
- Regular price
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$186.99 - Regular price
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$273.70 - Sale price
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$186.99
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Victron SmartSolar MPPT Charge Controller - 100V - 30AMP - UL Approved [SCC110030210]Vendor:Victron SmartSolar MPPT Charge Controller - 100V - 30AMP - UL Approved [SCC110030210]
- Regular price
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$128.35 - Regular price
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$151.00 - Sale price
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$128.35
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Victron SmartSolar MPPT Solar Charge Controller - 75V - 10Amp - UL Approved [SCC075010060R]Vendor:Victron SmartSolar MPPT Solar Charge Controller - 75V - 10Amp - UL Approved [SCC075010060R]
- Regular price
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$62.05 - Regular price
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$73.00 - Sale price
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$62.05
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Victron Orion-TR Smart 12/12-18A 18A (220W) Isolated DC-DC Charger or Power Supply [ORI121222120]Vendor:Victron Orion-TR Smart 12/12-18A 18A (220W) Isolated DC-DC Charger or Power Supply [ORI121222120]
- Regular price
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$159.80 - Regular price
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$188.00 - Sale price
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$159.80
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Victron BMV-712 Black Smart Battery Monitor [BAM030712200]Vendor:Victron BMV-712 Black Smart Battery Monitor [BAM030712200]
- Regular price
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$158.95 - Regular price
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$187.00 - Sale price
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$158.95
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Victron BatteryProtect BP-65 - 65AMP - 6-35 VDC [BPR000065400]Vendor:Victron BatteryProtect BP-65 - 65AMP - 6-35 VDC [BPR000065400]
- Regular price
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$36.55 - Regular price
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$43.00 - Sale price
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$36.55
Sale -
Victron Orion-TR Smart 12/12-30 30A (360W) Isolated DC-DC Charger or Power Supply [ORI121236120]Vendor:Victron Orion-TR Smart 12/12-30 30A (360W) Isolated DC-DC Charger or Power Supply [ORI121236120]
- Regular price
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$243.95 - Regular price
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$287.00 - Sale price
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$243.95
Sale -
Victron VE. Direct to Bluetooth Smart Dongle w/ 1.5M Cable [ASS030536011]Vendor:Victron VE. Direct to Bluetooth Smart Dongle w/ 1.5M Cable [ASS030536011]
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$39.95 - Regular price
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$47.00 - Sale price
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$39.95
Sale -
Victron SmartSolar MPPT 150/70-TR Solar Charge Controller - VE.CAN - UL Approved [SCC115070411]Vendor:Victron SmartSolar MPPT 150/70-TR Solar Charge Controller - VE.CAN - UL Approved [SCC115070411]
- Regular price
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$414.80 - Regular price
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$488.00 - Sale price
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$414.80
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Blue Sea 7701 ML-Series Solenoid w/Contura Switch 12VDC [7701]Vendor:Blue Sea 7701 ML-Series Solenoid w/Contura Switch 12VDC [7701]
- Regular price
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$177.99 - Regular price
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$267.21 - Sale price
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$177.99
Sale -
BEP Heavy Duty Battery Selector Switch [721]Vendor:BEP Heavy Duty Battery Selector Switch [721]
- Regular price
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$73.99 - Regular price
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$87.91 - Sale price
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$73.99
Sale -
BEP Remote Operated Battery Switch - 275A Cont - Deutsch Plug [701-MD-D]Vendor:BEP Remote Operated Battery Switch - 275A Cont - Deutsch Plug [701-MD-D]
- Regular price
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$184.99 - Regular price
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$262.75 - Sale price
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$184.99
Sale -
Blue Sea 7620 ML-Series Automatic Charging Relay (Magnetic Latch) 12VDC [7620]Vendor:Blue Sea 7620 ML-Series Automatic Charging Relay (Magnetic Latch) 12VDC [7620]
- Regular price
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$214.99 - Regular price
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$313.83 - Sale price
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$214.99
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Victron SmartSolar MPPT 100/20 - Up to 48 VDC - UL Approved [SCC110020160R]Vendor:Victron SmartSolar MPPT 100/20 - Up to 48 VDC - UL Approved [SCC110020160R]
- Regular price
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$89.25 - Regular price
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$105.00 - Sale price
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$89.25
Sale -
BEP 275A Cont Motorized Dual Operation VSS (Voltage Sensitive Switch) - Deutsch Connector [701-MDVS-D]Vendor:BEP 275A Cont Motorized Dual Operation VSS (Voltage Sensitive Switch) - Deutsch Connector [701-MDVS-D]
- Regular price
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$193.99 - Regular price
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$289.99 - Sale price
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$193.99
Sale -
BEP Square Battery Distribution Cluster f/Single Engine w/Two Battery Banks [716-SQ-140A-DVSR]Vendor:BEP Square Battery Distribution Cluster f/Single Engine w/Two Battery Banks [716-SQ-140A-DVSR]
- Regular price
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$185.99 - Regular price
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$286.08 - Sale price
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$185.99
Sale -
BEP Panel-Mounted Battery Master Switch [701-PM]Vendor:BEP Panel-Mounted Battery Master Switch [701-PM]
- Regular price
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$33.99 - Regular price
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$35.81 - Sale price
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$33.99
Sale -
Blue Sea 5510E e-Series Dual Circuit Battery Switch [5510e]Vendor:Blue Sea 5510E e-Series Dual Circuit Battery Switch [5510e]
- Regular price
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$67.99 - Regular price
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$81.01 - Sale price
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$67.99
Sale -
Blue Sea 5511e e-Series Dual Circuit Plus Battery Switch [5511e]Vendor:Blue Sea 5511e e-Series Dual Circuit Plus Battery Switch [5511e]
- Regular price
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$67.99 - Regular price
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$81.01 - Sale price
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$67.99
Sale -
Victron SmartSolar MPPT 150/35 - 150V - 35A - UL Approved [SCC115035210]Vendor:Victron SmartSolar MPPT 150/35 - 150V - 35A - UL Approved [SCC115035210]
- Regular price
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$184.45 - Regular price
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$217.00 - Sale price
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$184.45
Sale -
Victron BCD 402 Combiner Diode - 2 Batteries - 40A BCD402 [BCD000402000]Vendor:Victron BCD 402 Combiner Diode - 2 Batteries - 40A BCD402 [BCD000402000]
- Regular price
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$36.55 - Regular price
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$43.00 - Sale price
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$36.55
Sale -
Victron Smart BatteryProtect 48V - 100A [BPR110048000]Vendor:Victron Smart BatteryProtect 48V - 100A [BPR110048000]
- Regular price
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$137.70 - Regular price
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$162.00 - Sale price
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$137.70
Sale -
Victron BatteryProtect 48V - 100A [BPR048100400]Vendor:Victron BatteryProtect 48V - 100A [BPR048100400]
- Regular price
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$119.85 - Regular price
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$141.00 - Sale price
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$119.85
Sale -
Victron BlueSolar PWM-Light Charge Controller - 12/24V - 10AMP [SCC010010000]Vendor:Victron BlueSolar PWM-Light Charge Controller - 12/24V - 10AMP [SCC010010000]
- Regular price
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$20.40 - Regular price
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$24.00 - Sale price
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$20.40
Sale -
Victron Filax 2 Transfer Switch 110V/50Hz-120V/60Hz [SDFI0000110]Vendor:Victron Filax 2 Transfer Switch 110V/50Hz-120V/60Hz [SDFI0000110]
- Regular price
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$287.30 - Regular price
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$338.00 - Sale price
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$287.30
Sale -
Xantrex 60 AMP MPPT Charge Controller [710-6048-01]Vendor:Xantrex 60 AMP MPPT Charge Controller [710-6048-01]
- Regular price
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$453.99 - Regular price
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$569.00 - Sale price
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$453.99
Sale -
Victron Lynx Smart BMS 1000 NG (M10) MGMT System [LYN034170310]Vendor:Victron Lynx Smart BMS 1000 NG (M10) MGMT System [LYN034170310]
- Regular price
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$1,249.50 - Regular price
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$1,470.00 - Sale price
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$1,249.50
Sale -
Victron Lynx Smart BMS 500 NG (M10) [LYN034160310]Vendor:Victron Lynx Smart BMS 500 NG (M10) [LYN034160310]
- Regular price
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$906.95 - Regular price
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$1,067.00 - Sale price
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$906.95
Sale -
Victron Cyrix-Li-ct 12/24V-230A Intelligent Li-Ion Battery Combiner [CYR010230412]Vendor:Victron Cyrix-Li-ct 12/24V-230A Intelligent Li-Ion Battery Combiner [CYR010230412]
- Regular price
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$162.35 - Regular price
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$191.00 - Sale price
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$162.35
Sale -
Victron SmartSolar MPPT 150/100-MC4 VE-Can [SCC115110511]Vendor:Victron SmartSolar MPPT 150/100-MC4 VE-Can [SCC115110511]
- Regular price
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$527.00 - Regular price
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$620.00 - Sale price
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$527.00
Sale -
Mastervolt Charge Mate Pro Lithium 90 [83309004]Vendor:Mastervolt Charge Mate Pro Lithium 90 [83309004]
- Regular price
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$264.99 - Regular price
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$337.00 - Sale price
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$264.99
Sale -
Mastervolt Charge Mate Pro Lithium 40 [83304004]Vendor:Mastervolt Charge Mate Pro Lithium 40 [83304004]
- Regular price
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$249.99 - Regular price
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$315.00 - Sale price
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$249.99
Sale -
Sea-Dog Mini Battery Switch Key w/Removable Knob - 32V 300A [422730-1]Vendor:Sea-Dog Mini Battery Switch Key w/Removable Knob - 32V 300A [422730-1]
- Regular price
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$49.99 - Regular price
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$59.95 - Sale price
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$49.99
Sale -
Blue Sea 7718100 - ML-Series Solenoid Switch - Deutsch Connector - 12V [7718100]Vendor:Blue Sea 7718100 - ML-Series Solenoid Switch - Deutsch Connector - 12V [7718100]
- Regular price
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$194.99 - Regular price
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$315.51 - Sale price
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$194.99
Sale -
Guest Extra-Duty On/Off Diesel Power Battery Switch [2304A]Vendor:Guest Extra-Duty On/Off Diesel Power Battery Switch [2304A]
- Regular price
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$181.99 - Regular price
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$279.95 - Sale price
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$181.99
Sale -
ProMariner ProTechOne - 4 AMP - AC Inlet [24104]Vendor:ProMariner ProTechOne - 4 AMP - AC Inlet [24104]
- Regular price
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$75.99 - Regular price
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$96.59 - Sale price
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$75.99
Sale
How to Choose the Right Battery Management System for Your Boat
Efficient **battery management** ensures your boat’s **starting battery, house battery, and accessories** receive the right amount of power without unnecessary drain. Here’s how to find the best setup for your needs:
1. Key Components of a Battery Management System
- Battery Switches: Allows you to **manually control power flow** between batteries.
- Battery Isolators & Combiners: Prevents **one battery from draining another**, ensuring a reliable power supply.
- Battery Monitors: Provides real-time **voltage, current, and charge level tracking.**
- Smart Battery Management Systems (BMS): Automates charging and power distribution for **optimal efficiency.**
2. Choosing the Right Battery Switch
- Single Battery Switch: Controls power to a single battery bank.
- Dual Battery Switch: Ideal for boats with **starting and house batteries**, allowing independent or combined use.
- Automatic Charging Relays (ACR): Automatically directs charging power to the battery that needs it most.
3. Battery Isolators vs. Combiners – What’s the Difference?
- Battery Isolators: Keep batteries **separate** to prevent accidental draining.
- Battery Combiners:** Automatically connects batteries when charging and isolates them when discharging.
- Voltage-Sensing Relays (VSR): Switches charging between battery banks based on voltage levels.
4. Essential Battery Monitoring Features
- Real-Time Voltage & Amperage Display: Track your battery’s **health and power consumption.**
- State-of-Charge Indicators: Helps prevent over-discharge and unexpected power loss.
- Bluetooth & Smart Monitoring: Syncs with mobile apps for **remote battery tracking.**
5. When to Upgrade Your Battery Management System
- Expanding Your Electrical System: If you’ve added new electronics, solar panels, or extra battery banks, a **battery management upgrade is essential.**
- Unreliable Battery Performance: If your batteries are **draining too quickly** or struggling to hold a charge, an isolator or monitoring system can help diagnose the issue.
- Frequent Shore Power Use: A **smart battery manager** optimizes shore power charging to extend battery life.
Take Control of Your Boat’s Power System
With the right **battery management system,** you’ll enjoy **efficient charging, extended battery life, and reliable onboard power.** Explore our collection and enjoy Free U.S. Shipping on every order! ⚡🔋⚓