How Do Trailer Batteries Normally Get Charged When Being Towed

Published 07/29/2016

Question:

RE: Trailer Breakaway Kit Battery Charger - Code: 20011 I need a simple way to keep my old RV, 12v deep cycle SLA battery charged while protecting it from over/under charging while on the road. Will this charger handle this application? Thanks...

asked by: Ed

Expert Reply:

What most people do to put a maintenance charge on a deep cell battery like yours that is on a trailer is to run a 10 gauge wire from the 12 volt accessory circuit on the 7-way directly to the positive post of the battery. A battery of your size can only have a maintenance charge put on it through the trailer connector though since the wire gauge is pretty small. The silver lining to this is that you would never have to worry about the battery getting over-charged.

expert reply by: Jameson C