Optimate™ Lithium LFP 4S 10A Battery Charger10-step 12.8V 10A sealed battery saving charger and maintainerThe fastest professional battery charger for 12.8V/13.2V (LiFePO4/LFP) performance/race batteriesIncludes a TUNE mode for diagnostics or updating programmingAutomatically and safely charges, tests and maintains LiFePO4/LFP or deep cycle batteriesAmpmatic charge control adjusts current to match battery size and conditionLow-volt start of 0.5VPushbutton-activated BMS wakeup mode safely wakes battery out of sleep mode or low dischargeSmart, 24/7 interactive maintenance prevents discharge from connected circuitry