Forum Discussion

Rockinfigs's avatar
Rockinfigs
Explorer
Sep 13, 2013

Solar chargers for Two 12 volt batts

Hi im in the market for a solar panel trickle charger for two 12 volt batteries on my hauler. I have an attitude 27 cbg and it came with the option of getting a 10 watt solar panel which i didnt get..i decided to get an aftermarket one so i can take it off n only use it when desert camping for (2) 12 volt batteries connected parallel. two quesiotns

1) should i get the 10 or 15 watt solar from Deltran offered by campingworld

2) since i have 2 batteries and they r connected parallel does it matter which battery i connect the charger to?

thks

21 Replies

Show More
  • Golden_HVAC's avatar
    Golden_HVAC
    Explorer
    Sep 14, 2013
    Hi,

    I would not suggest getting anything as small as a 15 watt solar panel. The cost has come down a lot on the larger solar panels, you can get a 100 - 150 watt panel for a little over $1 per rated watt. You can get a China 10 amp controller for about $15. Then you will have a "real" solar system, that will recharge your battery, not just keep it from going dead in a few days.

    Your RV has some loads on it, such as the CO meter and propane detector that will consume 35 amp hours per day, or about what a 120 watt solar panel will put out in one day.

    SolaronSale.com is one place, SunElec.com is another.

    Good luck!

    Fred.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,283 PostsLatest Activity: Jul 17, 2025