General description AlwaysH Battery Maintainer is designed for 12V/20A and 24V/10A Lithium, LiFePO4, and Lead-Acid batteries (including AGM, Calcium, GEL, MF, EFB, SLA, VRLA, WET). It provides safe and efficient charging for various applications such as cars, motorcycles, boats, and lawn mowers. Technical specifications Model: P20 AC input voltage: 100-240V, 50/60Hz Output voltage: 12V/24V Output current: Maximum 20A for 12V battery; 10A maximum for 24V battery Minimum starting voltage: 2V Dimensions: 158mm x 90mm x 50mm Net weight: 470g Usage Smart battery charger with 4 modes controlled by a single button. 3-level current adjustment (up to 20A). LCD display shows battery voltage, charging current, charging temperature, and full battery status. Automatically switches between summer and winter modes for optimal charging. 9-stage automatic charging process including battery detection, desulfation, and maintenance charging. Repair mode for activating old and weak batteries. Other