A better way to charge
The alternator is not the best device to recharge your leisure batteries. This is because sometimes they are deep-discharged, and the usage of a proper charging curve is the best way to charge them. As starter batteries are commonly lightly discharged, it may be sufficient to use the alternator only. For deep-cycle leisure batteries, however, a specific charging curve is always recommended . An alternator with adequate power combined with a POWERSERVICE DC-DC charging booster is the ideal solution.