MDP Pro 99501-99507 Automatic Battery Chargers are made of aluminum, powder-coated for better corrosion resistance. These fully-automatic, multi- stage chargers can charge up to three battery banks simultaneously.  They have seven charging programs, two winterization programs programs and one power supply program. They have overload,  short-circuit,  over-temperature and input (fuse) protection.  A visual display will indicate the charge cycle.  The Optional Touchview Control Panel replaces the visual display on units marked with ** and provides more control and settings directly at the charger.  A remote Touchview Control Panel is available for control of  the charger at the helm or other location. Chargers can be ganged together to increase the amp output using CAN bus communication technology, maximum four 24V-100A (double boards) or 10 of the smaller size chargers (single boards). MDP First/Premium 99020-99030 have four charging programs including a weekly equalizations for all except the lithium battery charging program. Charging cycles are indicated one one tri-color LED. Three isolated bank connections. Both MDP Pro and MDP First/Premium have charge programs for lithium-ion-iron-phospate (LiFeSo4) batteries.