... GEL&Ca battery 4-32Ah 5.CE rohs 12v car battery charger based on microprocessor ,specially for 12V ... Over Current Protection,Over Voltage Protection, Short-Circuit Protection, Reverse polarity protection , Free Spark15Efficiency %>80%Mechanical16Weight Kg0.317Output ... term connection to maintain battery without damage.8.Polarity Reverse Protection, Short Circuit Protection, Over Temperature Protection, ...