BatteryMINDer 128CEC1: 12V 2/4/8 Amp Battery Charger - Maintainer - Desulfator

User-Selectable Settings for All Sealed / Wet (filler cap) / Maintenance-Free / AGM / Gel / Deep Cycle / RV / Marine / PLT and Odyssey brand Lead-Acid based Batteries. Not for Lithium; for lead-acid based only. Diagnoses battery's condition - can predict failing batteries before they die.