How to Charge Battery for Fridge Using Alternator and Solar Power
Updated 09/25/2024 | Published 09/23/2024 >
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Question:
Good morning I have a van with a refrigerator in it and the refrigerator is powered by a battery that is solar charged. When the van is running I want it to charge the refrigerator battery. But it needs to turn off if the solar battery voltage gets low. I am severely limited on space. What do I need? Im having no success on my own.
asked by: Greg S
Expert Reply:
Hey Greg, thanks for reaching out to us! Hopefully I can help you get all of this figured out so you can seamlessly keep your refrigerator battery charged up.
It sounds like you're needing the Redarc In-Vehicle BCDC Trailer Battery Charger # RED36TR which pulls power from your vehicle alternator to charge a separate power bank, but can also have a solar panel connected into it as well. During normal operation this system prioritizes the solar panel power, but then pulls the rest of the power needed to charge your battery bank from the alternator.
You'll need the Fuses # RED76FR and # RED86FR along with some wiring to get all of this installed.

Greg S.
9/25/2024
Jon I just need to double check. The van has a 100ah battery and a 100 watt panel that goes to a Renogy Rover charge controller.


Product Page this Question was Asked From
Redarc In-Vehicle BCDC Trailer Battery Charger - Dual Input - DC to DC - 12V - 12 Amp / Solar 40 Amp
- Battery Charger
- Battery Charger
- RV/Camper
- Trailer
- 12V
- 24V
- Charges and Maintains
- AGM
- Calcium
- Gel
- Lead Acid
- Lithium
- Solar Panels to Auxiliary Battery
- Vehicle Battery to Auxiliary Battery
- Smart Charge
- Trickle Charge
- Redarc
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Greg S.
9/24/2024
Good morning Jon The battery that needs to be kept charged is in my tow vehicle. I have a refrigerator in it that needs to run 24/7. Any other thoughts.