Marcum LIFEPO4 Charger With Wiring Harness - The 12v3amp LiFePO4 Charger works with all MarCum LiFePO4 Batteries, Kits, and L labeled systems. This charger is multi-stage for fast initial charging, reduced-charge near full, and a maintain charge cycle to prevent overcharging. A full charge of the LP41210 will take 4 – 10 hours, depending on battery. This charger is NOT compatible with Lead-acid, Lithium Ion Mite, Lithium Ion Force or Lithium Shuttle batteries. 12V3AH LiFeP04 charger Compatible with MarCum Brute and King LiFeP04 batteries Lithium LiFeP04 compatible charger – not for use with SLA, Lithium Ion, or Lithium Shuttle batteries Multi-stage charge types include fast, reduced-charge, and maintain cycles Full charge cycle – 4 – 10 hours, depending on battery The 12v6amp LiFePO4 Charger works with the MarCum King & Max LiFePO4 Batteries, Kits, and L labeled systems. This charger is multi-stage for fast initial charging, reduced-charge near full, and a maintain charge cycle to prevent overcharging. A full charge of the LP41218 will take 2 – 7 hours, depending on battery. This charger is NOT compatible with Lead-acid, Lithium Ion Mite, Lithium Ion Force, LiFePO4 Brute, or Lithium Shuttle batteries. 12V6AH LiFeP04 charger Compatible with MarCum King, and Max LiFeP04 batteries Lithium LiFeP04 compatible charger – not for use with SLA, Lithium Ion, or Lithium Shuttle batteries Multi-stage charge types include fast, reduced-charge, and maintain cycles Full charge cycle – 2 – 7 hours, depending on battery Includes both spade terminal and round terminal wiring harnesses.