Fully Automatic 12.8V/13.2V lithium (LFP) battery saving, charger, tester and maintainer Delivers up to 6A charge current; Ampmatic technology lowers charge rate for smaller lithium batteries Multi-step program saves from 0.5V, then charges and balances cells within the battery quickly and efficiently Push button reset for Battery Management System (BMS) on smart lithium batteries Includes TUNE stable power supply mode for troubleshooting with engine off. CHARGER OPTIMATE LITH 6A