Hi Al;

There are a lot of battery chargers out in the market , but if i were to purches a new battery charger . the top of my list would have to be C-TEK . they have a good share of the market at the moment . The size that you should look at is some thing around the 20 to 30 Amp model.

A bit of ouer kill with a charger of that size, but it the charger would do it easy. These type of battery chargers are very small and compact, size wise there about the size of a house brick.

Good luck.

   l