I picked up one of these https://harborfreight.com/lawn-garde...ger-68750.html and one of these. https://harborfreight.com/lawn-garde...tor-96728.html with a Lawn tractor battery in a Pelican Ammo can. The solar cell is heavier than I thought it would be, but it's portable and fits well in the Jeep. this system is working well so far.