One touch programming allows these chargers to charge deep cycle, wet starting, gel, and AGM batteries with precision. Also programmable is type of gassing mode, and recycle times when in shut off mode. The 2 digit LED displays percent of charge to complete cycle, and battery voltage. A tricolor LED also follows charge progress. Can be temperature compensated. DC current limiting, and polarity protected. This charger is built to order with the proper industrial connector and will require about 1-2 weeks build time. Please specify which connector you require (i.e. SB50 Gray, SB175 Red, Golf Cart, Clamps, etc.) during checkout in the comments section. If no selection is made the charger will arrive with a Gray SB175 Connector . Selectable Charge Profiles: F1 - Float: Battery voltage rises to 2.3 volts per cell max before dropping into a low float of 2.26 F2 - Gas & timed shut off: Timer trips at 2.3vpc, gassing threshold. Batteries are allowed to gas to a maximum of 2.55vpc before shut off. Programmable recycle time. Best for deep cycle batteries F3 - Gas & float: Timer trips at 2.3vpc gassing threshold. Batteries are allowed to gas to a maximum of 2.55vpc before dropping into indefinite float of 2.26vpc. Best for deep cycle batteries where an indefinite maintenance charge is desired. F4 - AGM: Batteries bulk charge to 2.3vpc, and enter absorption cycle where voltage is allowed to climb to a maximum 2.45vpc before dropping into indefinite float of 2.26vpc.