Safe, No Spark Charging! Deltran's advanced SuperSmart Battery Tender Battery Management System is light years ahead of any standard battery charger. It's the first fully automatic, constant-current battery charger designed to charge and/ or maintain up to 10 12-volt batteries simultaneously @ 2 amps.

* To avoid dangerous dead-short sparking, microchip circuitry will not activate output voltage until clips are correctly connected to battery.

* Simultaneously charges and/ or maintains up to 10 batteries.

* Maintains batteries at full charge.

* 2 amps per output charging current.

* Six foot lead with clamps included.

* 3 year warranty.