I have a Serpent Express retro kit on a new steel 16' trailer.
I recently bought a winch to install inside, but trying to figure out the best way to power it.
I saw a guy earlier this year that used one of the small portable battery jumpers to power his winch. I'm certainly open to that option and already have one of them, but I think a dedicated battery may be a better setup.
Is there a kit / setup to install a battery and have it recharge off of the trailer wiring harness?

Looking for some good ideas for powering the winch. Thanks guys.