New old stock never been used ideal if you have a lot of vehicles to trickle charge at the same time . This is a Deltran Battery Tender 4-Bank Battery Management System. It is a microprocessor-controlled battery charger designed to charge and maintain up to four 12-volt batteries simultaneously. Product: Deltran Battery Tender 4-Bank Battery Management System Function: Charges and maintains up to four 12V batteries at 1.25 amps each. Features: It is designed to prevent battery sulfation and can be used for multiple vehicles like motorcycles or ATVs. Accessories: The box includes four sets of fused battery clips and four sets of fused quick-connect ring terminals. Please look at my other items
