This is a 10 watt panel that will maintain the charge to boost the life of your battery and bring a battery back from 50 percent life.
Solar panel and battery for small utility trailer.
The l 16 size battery i used for the solar power trailer shown in these photos has a 7 x 12 base x 17 height and weighs 128 pounds.
Unless your trailer has dual axles it is doubtful you will be able to use more than eight of these l 16 size batteries without serious weight distribution problems.
3 piece grape solar gs star 100w 100 watt polycrystalline solar panels a 40 amp grape solar comet charge controller cables and manual.
Product length 39 in.
A solar panel would work well for you with this application.
4 25w solar panels 6 panel connection braces 2 led bulbs 1 dc connector cable 1 battery clamp connection cable 1 10a charge controller 1 4 in 1 connection cable amperage amps 6 8 material aluminum frame plastic product height 7 8 in.
Product weight 33 40 lb.
I recommend the solar power kit from torklift tla7713.
Best travel trailer battery.
Tp solar 100w foldable solar panel charger kit for portable generator power station smartphones laptop car boat rv trailer 12v battery charging dual 5v usb 19v dc output 4 4 out of 5 stars 153 199 99 199.
Product width 13 5 8 in.
You would also need a power control panel to charge the battery.
To add solar panels to the battery charging system on your trailer i recommend looking into the redarc in vehicle bcdc battery charger 331 bcdc1225d this will allow you to use both solar and battery power to charge and maintain your auxiliary battery.
100w would give you more leeway and not cost too much more so this would be the best bet.