11 charging programs are available: 12 V/2 A, 12 V-5A, 12V-10A, 24 V/2 A, 24 V-5A, 12 V AGM / Frost-2A, 12 V AGM / Frost-5A, 12 V AGM / Frost-10A, 24 V AGM / Frost-2A, 24 V AGM / Frost-5A, 13.6 V-5A (permanent voltage). With the freeze mode, the charging process the low temperatures. The AGM-mode adjusts the charging process especially for AGM batteries. The fully automatic battery charging is done in six charging steps. 1. Soft start, 2. Breaking The Sulphation, 3. Production of the charging, 4. Charging process up to 80%, 5. Charging process up to 100%, 6. Trickle charging. An LED display provides information about the respective charging step, charging status, charging mode, current, complete recharge or faulty connection. Modern safety technology with reverse polarity protection, overheating protection, overload protection and short-circuit protection protects you and the device the incorrect operation. For use on large batteries with high charging currents is a fan for cooling ins