Rated #1 by Aviation Consumer, the BatteryMINDER® Charger/Maintainer/Desulphator-Conditioner uses the latest in microprocessor controlled algorithms, coupled with several patented desulphation-recovery circuits to fully charge, maintain and condition all type/size/brands of lead-acid batteries -- including those by Concorde, Gill, and EnerSys. With three (3) charging rates and selectable voltage settings, the unit's output will match any known battery manufacturer's recommended charging-maintenance profiles for sealed-valve regulated, flooded, absorbed glass mat (AGM), as well as free electrolyte deep cycle, starter and dual purpose types. Batteries as small as 14 AH to 150 AH to be safely charged 70% faster than conventional constant voltage type chargers without fear of under or overcharge. Patented "sweep-pulse" desulphation safely dissolves both old, as well as newly formed sulphation, still considered to be the #1 cause of early battery failure. Built-in tester allows for easy assessment of battery condition, state of charge and detects the existance of sulphation. BatteryMINDer uses a watertight enclosure with built-in mounting tabs and non-slip pads allowing it to be used as a dedicated charger for multi-use in home or shop. Comes complete with two (2) types of battery attachments and a power plug for indirect-easy access connection to the battery. Parallel maintenance charging with simultaneous desulphation for up to six (6) batteries is also possible. Model Specifications: For use with Concorde AGM batteries. 24 Volts charger at 4 amp rate. Requires 110/120 volts. Temperature sensor is included at no additional charge! 4 lbs (2Kg) shipping weight.