This advanced fully automatic three-stage 15 Amp battery charger is ideal for charging all types of 24 Volt lead-acid batteries Flooded / Absorbed Glass Mat (AGM) / Gel Cell) from a 120 VAC, 60 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, short-circuit, and over-temperature protection. The unit allows charging of up-to 3 separate battery banks. Input120 VAC 60 HZ 6.5A Output27-28.8 VDC 15 A Weight5.5 (lbs) Dimensions10.5 x 8.5 x 3.1/8 (in) BY AMG SafetyListed to UL Standard UL-1564, EMI Compliant to FCC Part 15(B), Class B FEATURES: High efficiency Commercial Grade Supper Lightweight Extra Quiet operation Industry Proven Design – 1000s of units in operation 2 or 3 stage charging (user selectable) 120 VAC, 60 Hz Amperes 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 If you have any questions or issues with your order, please contact us--we'll resolve them for you. If the item(s) is damaged in transit or DOA, an exchange will be made. In order to receive proper credit on your return, please contact us to request a Return Authorization Number (RA) - This will allow us to process your return when it comes back to our warehouse. If the package is refused or returned without our issuing of an RA or without the RA # on it, a restocking fee will be applied. We will be unable to refund your cost of the original shipping if you decide that you do not want the order after it has already been submitted. Please note: We do not issue prepaid return labels. All returns must be in their original carton with all packing material intact. All returns must be sent freight prepaid by the customer and insured. Orders refused at delivery will be assessed all of the applicable fees listed above including the return fee, our shipping costs and a 25% restocking fee.