This is a smart, 12 Step, fully automatic switch-mode battery charger and maintainer. It restores batteries to their original capacity, recovers slightly sulfated batteries, charges batteries in cold climates, rescues drained batteries, and provides maintenance charging to increase battery life. A powerful battery charger with specialized charging modes for recovering severely drained batteries. Suitable for most 12 volt and 24 volt battery capacities from 14-230Ah, such as motorcycles, ATVs, UTVs, snowmobiles, cars, RVs, boats and trucks. These battery chargers are fortified with several unique safety features to protect you, your battery and the battery charger. The VosFX processor is a revolutionary smart processor utilizing sophisticated levels of intelligence to alter the charge process based on organic feedback from the battery to extend battery life. The processor quickly and efficiently makes decisions on how to charge the battery without risking user safety or damage to the battery. Rugged enclosure is made from a rugged polymer for high-impact resistance for some of the harshest and most demanding working environments. Features a fully insulated over-mold casing with strain relief ends to alleviate unwanted tension on cable leads. Each battery connection accessory features an over-molded inline fuse to increase user safety by protecting the battery charger from potentially dangerous short circuits. An interchangeable connector allows accessories to be properly mated and fastened with a snap-lock latch. Returns to last selected mode when restarted. Automatically adjusts itself to changing current needs. 100 per cent full charge even with varying A/C input voltages. Automatically shuts off if charger remains in bulk charge mode for an extended period of time. The box includes a charger, battery clamp connectors, eyelet terminal connectors, owner"s manual and user guide, product registration card. It is ETL approved for US and Canada and is RoHS compliant.