Electrical - Battery Isolators

47 products


  • Sale -24% Newmar 2-3-120 Battery Isolator [2-3-120]

    Newmar 2-3-120 Battery Isolator [2-3-120]

    2-3-120 Battery IsolatorThis heavy-duty isolator allows charging multiple batteries automatically from one or two alternators and prevents the discharge or ‘dumping” of one battery into another. Each battery is charged according to its need without overcharging and is rated for 12-, 24-, or 36-volt negative ground DC systems. Features: Conservatively rated diodes and a rustproof anodized aluminum heat sink case. Heavy-duty construction Rated for systems up to 48 volts DC, negative ground Rust-proof anodized aluminum case Stainless steel mounting hardware is provided Protective covers are provided for terminals Specifications: Alternator Sources: 2 Battery Bank: 3     Max. Amperage Input Capacity: 120   Stud Terminal Size: 6mm     Dimensions (L x W x H): 12.5 x 4.5 x 3.1 inches Weight: 5 lbs. Operating Temperature: -40 to +80 degrees Duty Cycle: Continuous rating to 50 degrees C Derate linearly to 70% @ 80 degrees C. Temp. Rise: 5 degrees C at full rated current (mount vertically for optimum cooling) Voltage Drop: 0.7V @ 50% load, 0.9V @ full load *Note: These battery isolators are not compatible with self-exciting alternators. The alternator must have an external excitation lead. Please consult the manufacturer of your alternator if you are unsure of your configuration Quick Guide (pdf)

    $554.00$420.50

  • Sale -35% ARCO Marine BI-0702-4 Battery Isolator f/10-350A Alternators on 12, 24 or 32V Negative Ground Systems [BI-0702-4]

    ARCO Marine BI-0702-4 Battery Isolator f/10-350A Alternators on 12, 24 or 32V Negative Ground Systems [BI-0702-4]

    BI-0702-4 Battery Isolator for 10-350A Alternators on 12, 24 or 32V Negative Ground SystemsThe Arco Marine BI-0702-4 is an inboard/outboard battery isolator that can handle 1 alternator, 2 batteries, and 70A max. Rated for use with 10 to 350-amp alternators on 12, 24, or 32-volt negative ground systems.*Includes regulator sensing terminalFeatures: 1 alternator, 2 batteries, 70A max Inboard and outboard battery isolators are solid-state devices that allow electrical current to flow in one direction ONLY, thus permitting the alternator to be connected directly to two batteries without fear of one higher-charged battery discharging into the lower-charged battery. Both batteries are always being charged automatically, in proportion, to their needs whenever the engine is running. When battery isolators are used in conjunction with selector switches, it is not necessary to change the switch position to provide for charging of both batteries. Isolators provide proportioning of the output or charging current on the alternator to the batteries as required, regardless of switch position. NOTE: Battery Isolators cannot be used on 12 volt charging systems with 24 volt trolling motors or newer outboard engines with rectifier-regulator charging systems.

    $106.15$69.50

  • Sale -33% ARCO Marine BI-1603 Battery Isolator f/10-350A Alternators on 12, 24 or 32V Negative Ground Systems [BI-1603]

    ARCO Marine BI-1603 Battery Isolator f/10-350A Alternators on 12, 24 or 32V Negative Ground Systems [BI-1603]

    BI-1603 Battery Isolator for 10-350A Alternators on 12, 24 or 32V Negative Ground SystemsThe Arco Marine BI-1603 is an inboard/outboard battery isolator that can handle 1 alternator, 3 batteries, and 160A max. Rated for use with 10 to 350-amp alternators on 12, 24, or 32-volt negative ground systems.Features: 1 alternator, 3 batteries, 160A max Inboard and outboard battery isolators are solid-state devices that allow electrical current to flow in one direction ONLY, thus permitting the alternator to be connected directly to two batteries without fear of one higher-charged battery discharging into the lower-charged battery. Both batteries are always being charged automatically, in proportion, to their needs whenever the engine is running. When battery isolators are used in conjunction with selector switches, it is not necessary to change the switch position to provide for charging of both batteries. Isolators provide proportioning of the output or charging current on the alternator to the batteries as required, regardless of switch position. NOTE: Battery Isolators cannot be used on 12 volt charging systems with 24 volt trolling motors or newer outboard engines with rectifier-regulator charging systems.

    $307.45$207.50

  • Sale -37% ARCO Marine BI-0702 Battery Isolator f/10-350A Alternators on 12, 24 or 32V Negative Ground Systems [BI-0702]

    ARCO Marine BI-0702 Battery Isolator f/10-350A Alternators on 12, 24 or 32V Negative Ground Systems [BI-0702]

    BI-0702 Battery Isolator for 10-350A Alternators on 12, 24 or 32V Negative Ground SystemsThe Arco Marine BI-0702 is an inboard/outboard battery isolator that can handle 1 alternator, 2 batteries, and 70A max. Rated for use with 10 to 350-amp alternators on 12, 24, or 32-volt negative ground systems.Features: 1 alternator, 2 batteries, 70A max Inboard and outboard battery isolators are solid-state devices that allow electrical current to flow in one direction ONLY, thus permitting the alternator to be connected directly to two batteries without fear of one higher-charged battery discharging into the lower-charged battery. Both batteries are always being charged automatically, in proportion, to their needs whenever the engine is running. When battery isolators are used in conjunction with selector switches, it is not necessary to change the switch position to provide for charging of both batteries. Isolators provide proportioning of the output or charging current on the alternator to the batteries as required, regardless of switch position. NOTE: Battery Isolators cannot be used on 12 volt charging systems with 24 volt trolling motors or newer outboard engines with rectifier-regulator charging systems.

    $107.95$68.50

  • Sale -35% ARCO Marine BI-1203-3A Battery Isolator f/10-350A Alternators on 12, 24 or 32V Negative Ground Systems [BI-1203-3A]

    ARCO Marine BI-1203-3A Battery Isolator f/10-350A Alternators on 12, 24 or 32V Negative Ground Systems [BI-1203-3A]

    BI-1203-3A Battery Isolator for 10-350A Alternators on 12, 24 or 32V Negative Ground SystemsThe Arco Marine BI-1203-3A is an inboard/outboard battery isolator that can handle 1 alternator, 3 batteries, and 120A max. Rated for use with 10 to 350-amp alternators on 12, 24, or 32-volt negative ground systems.*Includes exciter terminalFeatures: 1 alternator, 3 batteries, 120A max Inboard and outboard battery isolators are solid-state devices that allow electrical current to flow in one direction ONLY, thus permitting the alternator to be connected directly to two batteries without fear of one higher-charged battery discharging into the lower-charged battery. Both batteries are always being charged automatically, in proportion, to their needs whenever the engine is running. When battery isolators are used in conjunction with selector switches, it is not necessary to change the switch position to provide for charging of both batteries. Isolators provide proportioning of the output or charging current on the alternator to the batteries as required, regardless of switch position. NOTE: Battery Isolators cannot be used on 12 volt charging systems with 24 volt trolling motors or newer outboard engines with rectifier-regulator charging systems.

    $250.29$163.50

  • Sale -35% ARCO Marine BI-3202 Battery Isolator f/10-350A Alternators on 12, 24 or 32V Negative Ground Systems [BI-3202]

    ARCO Marine BI-3202 Battery Isolator f/10-350A Alternators on 12, 24 or 32V Negative Ground Systems [BI-3202]

    BI-3202 Battery Isolator for 10-350A Alternators on 12, 24 or 32V Negative Ground SystemsThe Arco Marine BI-3202 is an inboard/outboard battery isolator that can handle 2 alternators, 2 batteries, and 120A max. Rated for use with 10 to 350-amp alternators on 12, 24, or 32-volt negative ground systems.Features: 2 alternators, 2 batteries, 120A max Inboard and outboard battery isolators are solid-state devices that allow electrical current to flow in one direction ONLY, thus permitting the alternator to be connected directly to two batteries without fear of one higher-charged battery discharging into the lower-charged battery. Both batteries are always being charged automatically, in proportion, to their needs whenever the engine is running. When battery isolators are used in conjunction with selector switches, it is not necessary to change the switch position to provide for charging of both batteries. Isolators provide proportioning of the output or charging current on the alternator to the batteries as required, regardless of switch position. NOTE: Battery Isolators cannot be used on 12 volt charging systems with 24 volt trolling motors or newer outboard engines with rectifier-regulator charging systems.

    $363.98$235.50

  • Sale -34% ARCO Marine BI-1602 Battery Isolator f/10-350A Alternators on 12, 24 or 32V Negative Ground Systems [BI-1602]

    ARCO Marine BI-1602 Battery Isolator f/10-350A Alternators on 12, 24 or 32V Negative Ground Systems [BI-1602]

    BI-1602 Battery Isolator for 10-350A Alternators on 12, 24 or 32V Negative Ground SystemsThe Arco Marine BI-1602 is an inboard/outboard battery isolator that can handle 1 alternator, 2 batteries, and 160A max. Rated for use with 10 to 350-amp alternators on 12, 24, or 32-volt negative ground systems.Features: 1 alternator, 2 batteries, 160A max Inboard and outboard battery isolators are solid-state devices that allow electrical current to flow in one direction ONLY, thus permitting the alternator to be connected directly to two batteries without fear of one higher-charged battery discharging into the lower-charged battery. Both batteries are always being charged automatically, in proportion, to their needs whenever the engine is running. When battery isolators are used in conjunction with selector switches, it is not necessary to change the switch position to provide for charging of both batteries. Isolators provide proportioning of the output or charging current on the alternator to the batteries as required, regardless of switch position. NOTE: Battery Isolators cannot be used on 12 volt charging systems with 24 volt trolling motors or newer outboard engines with rectifier-regulator charging systems.

    $216.20$142.50

  • Sale -35% ARCO Marine BI-3203 Battery Isolator f/10-350A Alternators on 12, 24 or 32V Negative Ground Systems [BI-3203]

    ARCO Marine BI-3203 Battery Isolator f/10-350A Alternators on 12, 24 or 32V Negative Ground Systems [BI-3203]

    BI-3203 Battery Isolator for 10-350A Alternators on 12, 24 or 32V Negative Ground SystemsThe Arco Marine BI-3203 is an inboard/outboard battery isolator that can handle 2 alternators, 3 batteries, and 120A max. Rated for use with 10 to 350-amp alternators on 12, 24, or 32-volt negative ground systems.Features: 2 alternators, 3 batteries, 120A max Inboard and outboard battery isolators are solid-state devices that allow electrical current to flow in one direction ONLY, thus permitting the alternator to be connected directly to two batteries without fear of one higher-charged battery discharging into the lower-charged battery. Both batteries are always being charged automatically, in proportion, to their needs whenever the engine is running. When battery isolators are used in conjunction with selector switches, it is not necessary to change the switch position to provide for charging of both batteries. Isolators provide proportioning of the output or charging current on the alternator to the batteries as required, regardless of switch position. NOTE: Battery Isolators cannot be used on 12 volt charging systems with 24 volt trolling motors or newer outboard engines with rectifier-regulator charging systems.

    $440.20$285.50

  • Sale -30% Mastervolt Battery Mate 1602 IG Isolator - 120 Amp, 2 Bank [83116025] Mastervolt Battery Mate 1602 IG Isolator - 120 Amp, 2 Bank [83116025]

    Mastervolt Battery Mate 1602 IG Isolator - 120 Amp, 2 Bank [83116025]

    Battery Mate 1602 IG Isolator - 120 Amp, 2 BankThe Battery Mate is the ultimate solution for charging several batteries simultaneously and is compatible with any type of alternator/battery charger, in both existing and new systems. As the voltage loss between the alternator and battery is negligible, the Battery Mate performs far better than conventional battery isolators. This ensures fast and complete charging of your batteries without having to make additional adjustments to the alternator.While battery isolators are conventional diode splitters, the Battery Mate's technology is electronic and includes mosfets (transistors). Its components compensate for variations in voltage and ensure that charging continues at the right voltage level, even with several battery banks. The input side on the Battery Mate is connected to the alternator and/or battery charger, while two batteries are connected to the output side. The Battery Mate is easy to install on a DIN rail (industry standard).The Mastervolt Battery Mate can be used in any application even if the standard alternator need external excitation or voltage sensing. In this case the additional IG contact can be connected.WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov. Quick Guide (pdf)Owner's Manual (pdf)

    $439.56$305.50

  • Sale -15% Victron Argodiode Battery Isolator 180-3AC - 3 Batteries - 180A [ARG180301020]

    Victron Argodiode Battery Isolator 180-3AC - 3 Batteries - 180A [ARG180301020]

    Argodiode Battery Isolator 180-3AC - 3 Batteries - 180AArgodiode Battery Isolators allow simultaneous charging of two or more batteries from one alternator, without connecting the batteries. Discharging the accessory battery for example will not result in also discharging the starter battery. Low voltage drop due to the use of high-efficiency Schottky diodes.The Argo Battery Isolators feature a low voltage drop thanks to the use of Schottky diodes: at low current, the voltage drop is approximately 0,3 V, and at the rated output of approximately 0,45 V. All models are fitted with a compensation diode that can be used to slightly increase the output voltage of the alternator. This compensates for the voltage drop over the diodes in the isolator. Simply inserting the isolator in the cabling between the alternator and the batteries will slightly reduce charge voltage. The result can be that batteries are not charged to the full 100% and age prematurely. Alternator energize input Some alternators need DC voltage on the B+ output to start charging. Obviously, DC will be present when the alternator is directly connected to a battery. Inserting a Diode or FET splitter will however prevent any return voltage/current from the batteries to the B+, and the alternator will not start. The new ‘AC’ diode isolators feature a special current limited energize input that will power the B+ when the engine run/stop switch is closed.Please contact your dealer for any returns, repairs or support issues related to this product. Quick Guide (pdf)

    $129.00$109.65

  • Sale -12% Victron Argodiode Battery Isolator 80-2SC - 2 Batteries - 80A [ARG080202000]

    Victron Argodiode Battery Isolator 80-2SC - 2 Batteries - 80A [ARG080202000]

    Argodiode Battery Isolator 80-2SC - 2 Batteries - 80AArgodiode Battery Isolators allow simultaneous charging of two or more batteries from one alternator, without connecting the batteries. Discharging the accessory battery for example will not result in also discharging the starter battery. Low voltage drop due to the use of high-efficiency Schottky diodes.The Argo Battery Isolators feature a low voltage drop thanks to the use of Schottky diodes: at low current, the voltage drop is approximately 0,3 V, and at the rated output of approximately 0,45 V. All models are fitted with a compensation diode that can be used to slightly increase the output voltage of the alternator. This compensates for the voltage drop over the diodes in the isolator. Simply inserting the isolator in the cabling between the alternator and the batteries will slightly reduce charge voltage. The result can be that batteries are not charged to the full 100% and age prematurely. Alternator energize input Some alternators need DC voltage on the B+ output to start charging. Obviously, DC will be present when the alternator is directly connected to a battery. Inserting a Diode or FET splitter will however prevent any return voltage/current from the batteries to the B+, and the alternator will not start. The new ‘AC’ diode isolators feature a special current limited energize input that will power the B+ when the engine run/stop switch is closed.Please contact your dealer for any returns, repairs or support issues related to this product. Quick Guide (pdf)

    $46.00$40.50

  • Sale -14% Victron Argodiode Battery Isolator 80-2AC - 2 Batteries - 80A [ARG080201000]

    Victron Argodiode Battery Isolator 80-2AC - 2 Batteries - 80A [ARG080201000]

    Argodiode Battery Isolator 80-2AC - 2 Batteries - 80AArgodiode Battery Isolators allow simultaneous charging of two or more batteries from one alternator, without connecting the batteries. Discharging the accessory battery for example will not result in also discharging the starter battery. Low voltage drop due to the use of high-efficiency Schottky diodes.The Argo Battery Isolators feature a low voltage drop thanks to the use of Schottky diodes: at low current, the voltage drop is approximately 0,3 V, and at the rated output of approximately 0,45 V. All models are fitted with a compensation diode that can be used to slightly increase the output voltage of the alternator. This compensates for the voltage drop over the diodes in the isolator. Simply inserting the isolator in the cabling between the alternator and the batteries will slightly reduce charge voltage. The result can be that batteries are not charged to the full 100% and age prematurely. Alternator energize input Some alternators need DC voltage on the B+ output to start charging. Obviously, DC will be present when the alternator is directly connected to a battery. Inserting a Diode or FET splitter will however prevent any return voltage/current from the batteries to the B+, and the alternator will not start. The new ‘AC’ diode isolators feature a special current limited energize input that will power the B+ when the engine run/stop switch is closed.Please contact your dealer for any returns, repairs or support issues related to this product.

    $59.00$50.50

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