Solar Battery Charger for 12V Car Battery
Updated 01/26/2026 | Published 01/23/2026
Products Featured in This Question
Question:
I need battery charger for a regular auto battery but needs to be solar
asked by: Dan M
Expert Reply:
Hey Dan! If you're trying to maintain a battery while your vehicle sits for a long period of time you can use the OptiMate Solar Duo Portable Solar Panel with Controller # MA56JR. This has a 40 watt solar panel with a stand so you can sit wherever you want. If you're looking for something a little smaller we also have the # MA89JR and # MA69JR which mount using suction cups or can be permanently mounted with standard hardware.
What vehicle is this for?
(click to enlarge)
Product Page this Question was Asked From
OptiMate Solar Duo Portable Solar Panel with Controller - 40 Watt Solar Panel
- Portable Solar Panel
- With Solar Charge Controller
- Battery
- RV Solar Prep
- 1 - 50 Watts
- 0.1 - 5 Amps
- AGM
- Gel
- Lead Acid
- Lithium
- OptiMate
more information >
Featured Help Information
Instructions
Continue Researching
- Q&A: Recommended Single Locking Battery Box for a Lithium Battery
- Q&A: Recommended Hydraulic Trailer Jack to Work w/a Existing Hydraulic Pump System
- Q&A: What Parts are Needed to Use the Go Power SAE Plug On the Side of My RV?
- Q&A: Availability of Portable Solar System for Boondocking
- Q&A: Recommended 7-Way and 4-Way Trailer Wiring Connector Compatible with Factory Harness
- Q&A: Parts Needed To Add Hopkins 7/4 Pole Connector To a 2020 Ford F-150 With Factory 4-Way
- Q&A: Do You Have the Instructions and User Manual for the Advent Air Low Profile RV Air Conditioner?
- Article: Trailer Wiring Diagrams
- Article: 4-Step Guide to Installing RV Solar Power
- Article: 4 Common Myths About RV Solar Power
- Article: 4 Reasons Not to Use RV Solar Power (And 4 Reasons You Should)
- Article: My Trailer Hitch Doesn't Fit
- Article: How to Measure Your Trailer Wheel Bolt Pattern
- Article: How to Charge a Trailer Battery While Driving: 3 Common Problems (And How to Fix Them)