Sunday, January 29, 2023


Ask Dave: What maintainer do you recommend for my RV’s batteries?

Dave Solberg is a leading expert in the RV industry and author of the “RV Handbook” as well as the Managing Editor of the RV Repair Club. Today he discusses a battery maintainer.

Dear Dave,
I would like to get a solar battery trickle charger. There are lots of options for maintainers, and lots of opinions by RVers. What is a good system to charge two group 27 lead acid batteries? I also live where we get a fair amount of snow and have some gray sky days.  —Franklin

Dear Franklin,
You are correct. There are several options for solar chargers today starting with the cheapest being at Harbor Freight and all the way up to full solar charging and maintaining systems. I typically recommend the Battery Minder product. It has a low amp solar option and it sends high impact waves into the battery to condition it rather than boiling the water out.

This system comes with a charge controller and is a full-time desulfation system that will extend the life of your batteries. This is only a 5-watt panel designed to maintain the batteries when in storage and not large enough for boondocking.

I would recommend getting a larger system

My recommendation would be to invest a little more money into getting a larger system that will recharge batteries and maintain while in storage. Both Zamp Solar and Go Power! have very affordable systems that have 100-watt and larger panels with a charge controller.

Since you indicated the rig is in an area that will get quite a bit of snow, you might want to consider a portable that you can dust off occasionally.

This could be mounted at the front for easy access, IF the area is secure.

Read more from Dave here


We have started a new forum link for Ask Dave. Please be as brief as possible. Attach a photo or two if it might help Dave with his response. Click to visit Dave’s forum. Or send your inquiries to him using the form below.

Click or drag a file to this area to upload.



If you value what you learn from, would you please consider becoming a voluntary subscriber by pledging your support? Every contribution, no matter how modest, helps us serve you better. Thank youLearn more here.

Facebook Groups you might like
RVing with Dogs
RV Tech Tips
RV Advice
Towing Behind a Motorhome
RVing Over 70
. . . and the official Facebook page

Winterizing your RV this season? Amazon has a wide choice of RV antifreeze.


0 0 votes
Article Rating
Subscribe to comments
Notify of

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Inline Feedbacks
View all comments

Subscribe to our newsletter

Every Saturday and Sunday morning. Serving RVers for more than 20 years.