Alternator & Starter Battery Charging

Although often overlooked and a source of unnecessary intimidation, the alternator can be a potent source of energy for mobile power applications.  In most cases, an alternator charger, with just an hour of driving, will deliver more energy than a 100W solar charger, and do it at a fraction of the cost.  The job of the alternator charging system is to send power from the starter battery / alternator to the house battery system, typically a lithium battery.  A well-designed alternator charging system will not harm the alternator or house battery bank, while delivering as much charge as possible. AM Solar has developed a variety of application specific alternator charging systems for vans, skoolies, motorhomes, and even trailers, truck campers and 5th wheels.  Our alternator charging, or tow vehicle compatibility kits, consist of the following:  A DC/DC charger or battery combiner, circuit protection, cables, lugs, and heat shrink tubing.  DC/DC chargers, like the Victron Orion, reformat power from the alternator into something that can safely be fed to a battery bank.  Battery Combiners on the other hand, like the Victron Cyrix, create a direct connection between the alternator and the house battery bank.

7-Pin Tow-Vehicle Compatibility / Trailer / 5th Wheel / Truck Camper

In stock vehicle-towing-a-trailer applications, the only form of alternator charging is a very pinched bulk current coming through the 7-pin connector. These kits include complete solutions to augment that 7-pin charging to supply multi-stage charging of either 12v or 24V house banks as well as preventing back-feeding of lithium systems. These kits also include separate high current charging systems for both 12V and 24V house banks.

  • 7-Pin Compatibility Kits

    These kits offer everything one may need in order to install a modest DC-DC converter system onto the 7-pin wiring harness of your trailer, truck camper, or 5th wheel. We have kits for 12V Engine to 12V Chassis Battery charging, as well as...

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  • Truck Camper Alternator Charging Kits

    These kits offer everything one may need in order to install a single isolated DC-DC converter system onto a truck camper or other isolated chassis applications. These kits include source side breaker, marine/oil rated cable, Anderson Connector assembly with Environmental Boot, cable gland,...

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  • Expandable Trailer/5th Wheel Alternator Charging Kits

    These kits offer everything one may need in order to install multiple isolated DC-DC converters onto a trailer/5th wheel or other isolated chassis applications. These kits include source side fuse, marine/oil rated cable, Anderson Connector assembly with Environmental Boot, cable glands, Isolated Victron...

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  • Trailer/5th Wheel Add-on Alternator Charging Kits

    These kits offer everything one may need in order to install an additional isolated DC-DC converter onto an Expandable Trailer/5th Wheel Alternator Charging Kit. These kits include marine/oil rated cable, Isolated Victron Orion DC-DC Converter, converter output fuse, and lugs & heat-shrink. *Please...

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  • Engine Run Upfitter Relay Kit for Orion Tow Systems

    This kits offer everything one may need in order to install a disconnection relay wired to a run signal, for Orion Tow Systems. Often with newer tow-vehicles we see them equipped with smart/ecu controlled alternators, which depending on RPMs and other factors can...

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Van Conversion / Skoolie / Other Empty Shell Conversions

In empty shell and other applications where the vehicle isn’t wired as an RV from a factory, projects there is no preexisting cable to utilize for a retrofit . These kits include complete solutions to charge a house battery from an engine battery on a van, skoolie, or other single chassis applications. These kits include both DC-DC converter systems for 12V or 24V house charging and bi-directional solenoid/relay systems.

  • Empty Shell Alternator Charging Kits

    These kits offer everything one may need in order to install a single non-isolated DC-DC converter system onto an van conversion, skoolie, or other empty shell applications. These kits include source side breaker, marine/oil rated cable, non-isolated Victron Orion DC-DC Converter, output breaker,...

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  • Expandable Empty Shell Alternator Charging Kits

    These kits offer everything one may need in order to install multiple non-isolated DC-DC converters onto a van conversion, skoolie, or other empty shell applications. These kits include source side breaker, marine/oil rated cable, non-Isolated Victron Orion DC-DC Converter, converter output fuse, output...

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  • Empty Shell Add-on Alternator Charging Kits

    These kits offer everything one may need in order to install an additional non-isolated DC-DC converter onto an Expandable Empty Shell Alternator Charging Kit. These kits include marine/oil rated cable, non-Isolated Victron Orion DC-DC Converter, converter output fuse, and lugs & heat-shrink. *Please...

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  • Straight Shot Alternator Kit

    Designed for a Ford Transit with a 175A CCP (Consumer Connection Port) #2 that is only active when the ignition is on. This kit will allow a straight shot passthrough from your alternator to a house battery system. This kit comes with 25’...

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  • Battery Combiner for Drop-In Lithium

    Enable alternator charging to a drop-in lithium battery bank. An optional boost feature lets your house batteries start your ignition when your starter battery is dead. Not for use with alternators rated less than 160A, Smart Alternators, or rigs with regenerative braking.  ...

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  • Boost Bypass Kit (For Orion Alternator Kits)

    Designed for alternator charging kits that utilize an Orion or other form of DC/DC charging. This kit will allow a momentary emergency boost feature if one is in need of jump-starting their chassis battery. This kit comes with 32’ of 2/0 cable, a...

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Components / Class A / Class B / Class C

In Motorhome and Class C applications, there is typically already some form of alternator charging, be it a solenoid/relay like system or a DC-DC converter system. This section consist of discrete components that may be used in alternator charging systems upgrades.

  • Victron Orion XS 12/12-50A (700W) Non-isolated DC-DC charger

    The new Orion XS, engineered from the ground up, redefines DC-DC battery-to-battery charging. Ideal for contiguous chassis applications such as vans, motorhomes, and skoolies with a 12v chassis battery bank and a 12v house battery bank.The Orion XS 12/12-50A (700W) Non-isolated DC-DC charger...

    Out of stock

  • Victron Orion-Tr Smart 12/12-30 (360W) Non-isolated DC-DC charger

    Ideal for contiguous chassis applications such as vans, motorhomes, and skoolies with a 12v chassis battery bank and a 12v house battery bank. The Orion-Tr Smart 12/12-30 (360W) Non-isolated DC-DC charger is a professional DC to DC adaptive 3-stage charger with built-in Bluetooth,...

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  • Victron Orion-Tr Smart 12/24-15 (360W) Non-isolated DC-DC charger

    Ideal for contiguous chassis applications such as vans, motorhomes, and skoolies with a 12v chassis battery bank and a 24v house battery bank. The Orion-Tr Smart 12/24-15 (360W) Non-isolated DC-DC charger is a professional DC to DC adaptive 3-stage charger with built-in Bluetooth,...

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  • Victron Orion-Tr Smart 12/12-30 (360W) Isolated DC-DC charger

    Ideal for independent chassis applications such as travel trailers and truck campers with a 12v chassis battery bank and a 12v house battery bank, such as travel trailers and truck camper. The Orion-Tr Smart 12/12-30 (360W) Isolated DC-DC charger is a professional DC...

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  • Victron Orion-Tr Smart 12/12-18 (220W) Isolated DC-DC charger

    Ideal for independent chassis applications such as travel trailers and truck campers with a 12v chassis battery bank and a 12v house battery bank. The Orion-Tr Smart 12/12-18 (220W) Isolated DC-DC charger is a professional DC to DC adaptive 3-stage charger with built-in...

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  • Victron Orion-Tr Smart 12/24-10A (240W) Isolated DC-DC charger

    Ideal for independent chassis application ssuch as travel trailers and truck campers with a 12v chassis battery bank and a 24v house battery bank. The Orion-Tr Smart 12/24-10A (240W) Isolated DC-DC charger is a professional DC to DC adaptive 3-stage charger with built-in...

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  • Victron Orion-Tr Smart 12/24-15 (360W) Isolated DC-DC charger

    Ideal for independent chassis applications such as travel trailers and truck campers with a 12v chassis battery bank and a 24v house battery bank. The Orion-Tr Smart 12/24-15 (360W) Isolated DC-DC charger is a professional DC to DC adaptive 3-stage charger with built-in...

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  • Victron Cyrix Battery Combiner

    Victron Cyrix battery combiners connect your house battery bank to your starter battery and alternator to allow alternator charging. Additionally, when a charge is applied to a house battery bank the Cyrix will close and allow current to flow to the starter battery....

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  • EV200 Relay

    EV200 Relay

    12/24V high current relay AM Solar Part Number:  RELAY-EV20

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Misc. Alternator/Starter Charging Components

  • DC Breakers

    Because of Direct Current's tendency to arc when disconnected, special breakers are needed. These DC breakers are ideally used between charge controllers and battery banks and on alternator or small inverter lines. AM Solar Part Number: BRKR-DC-BRKR-030A BRKR-DC-BRKR-040A BRKR-DC-BRKR-050A BRKR-DC-BRKR-060A BRKR-DC-BRKR-080A BRKR-DC-BRKR-100A BRKR-DC-BRKR-120A...

    • Dimensions: H 1.8" x W 2.3" x D 3.5"