TecMate OptiMate Lithium 4s 10A Battery Charger The TecMate OptiMate Lithium 4s 10A represents the zenith of power management tools for 12.8V/13.2V LiFePO4 / LFP batteries, designed with the high demands of serious riders in mind. It features a Tune mode for diagnostics and programming updates, ensuring your batteries are always charged for optimal performance on the track. Features: The fastest professional battery charger for Lithium 12.8V/13.2V (LiFePO4/LFP) performance/race batteries 10-step 12.8V 10A sealed battery saving charger and maintainer Includes a Tune mode for diagnostics or updating programming Automatically and safely charges, tests and maintains LiFePO4/LFP or deep cycle batteries Ampmatic charge control adjusts current to match battery size and condition Low-volt start of 0.5V Pushbutton-activated BMS wakeup mode safely wakes battery out of sleep mode or low discharge Can be used indoor / outdoor lowest temperature -40F / -40C Global input (100-240V 50-60Hz), high efficiency (Cec listed) Smart, 24/7 interactive maintenance prevents discharge from connected circuitry