This advanced fully automatic three-stage 15 Amp battery charger is ideal for charging all types of 12 Volt lead-acid batteries ( Flooded / Absorbed Glass Mat (AGM) / Gel Cell) from a 120 V- 60 Hz or 230 V- 50 Hz AC source. By means of a DIP switch setting- conversion to a two-stage algorithm is possible to charge batteries connected to a DC load (DC UPS). The unit can also be used as a DC Power Supply. Features include overload and short-circuit protection. The unit allows charging of up-to 3 separate battery banks.High efficiency.Commercial Grade.Lightweight.Quiet operation.Industry Proven Design - 1000s of units in operation.2 or 3 Stage charging (user selectable).120 or 230 VAC- 50/60 Hz (user selectable).Voltage meter display - Ammeter and LED power status.For all types of Lead Acid batteries.Charge with a battery load or stand alone.Use as a power supply or DC UPS.UPC: Universal Protection Circuit - short circuit- overload- reverse battery polarity.Charge 3 banks of batteries at once - no isolator necessary.Input: 120 VAC 60 Hz or 230 VAC 50 Hz.Output: 12 VDC.Amps: 15 Amps.Dimensions: 8.5- x 8.5- x 3-.Safety: Listed to UL Standard UL-1564- EMI Compliant to FCC Part 15(B)- Class B.Applications:Automotive.Recreational vehicles.Marine.Communications sites.Battery back-up systems.