Most diesels are installed with their original automotive grade alternators not designed for sustained high output charging. 

Balmar’s high-output alternators will be the most powerful charge source on board your vessel or coach. If sized properly, with temperature sensing and processor control, you can bring even the biggest house battery bank up to full charge in a short period of time without stressing the batteries. For over 30 years Balmar has been the most respected alternator of its kind. We can provide Balmar installation packages for most any engine model.