Battery charging

Maggie
Maggie Forum Participant Posts: 37
First Comment
edited April 2013 in Caravans #1

We are looking for a device to charge our second caravan battery from the 12volt system in our car, when we drive. Many years ago we had a TP2 box which served us well. However they are no longer about. With caravans so reliant on power these days we thought it prudent to invest in the second battery, now we need to know how to top it up when on a rally . Can anyone offer a solution??