OptiMate Lithium LFP 4S 9A/5S 7AOptiMATE Lithium Series LFP 4S 9A/5S 7A: 10-step 12.8V 9.5A / 16V 7.5A battery-saving charger and maintainer.The advanced ‘PRO’ battery charger for the 12.8V & 16V LiFePO4 / LFP lithium battery in your performance / race motorcycles, cars or craft. The ultimate Lithium charger for the track!Ideal for 12.8V/16V LiFePO4 / LFP batteries found in the vehicles / craft above.BMS: Power reset rapidly re-energizes the battery.Select charge voltage of 12.8V for 4s Lithium batteries or 16V for 5s Lithium batteries. Selection remains in memory even if AC power is lost.Fully automatic multi-step program brings the battery safely to full charge. Connect to the battery and OptiMate Lithium Select does the rest, no supervision required!AMPMATIC: Automatically adjusts current to match battery size and condition.Safe to leave connected. Full electronic protection.24/7: Maintains battery at full charge and good health.Low voltage recovery from as low as 0.5V.S.O.H.: Tests battery state of health.TEST: Warns when battery damage is detected.Green Technology: Energy saving technology. Efficient 24-7 battery maintenance and Stand-by power less than 0.5W.IP54: Weatherproof. Rated for use down to -40°C / -40°F.