I have used Battery Tender products for years. On the motorcycles, boat, TT and now the RV. One Battery tender plus will maintain two batteries, not sure about any more. I just purchased a Battery Tender 15w solar for the house batteries and a 5w Solar for the chassis. My coach faces south when stored so they lay on the dash. Deltran (Battery Tender) also has excellent customer service if you have any questions a human even picks up the phone.
__________________
This post is opinion based on experience.
2015 Hurricane 27K
2013 Sea Ray 220SD
|