FML-1220A 12V 20A LiFePO4 Battery Charger The FML-1220A is a 14.5V adjustable current lithium charger with BMS wake-up function, specifically designed for solar storage applications. This professional-grade charger delivers constant charging voltage of 14.5V ±0.2V, tailor-made for 4S LiFePO4 battery packs. With adjustable charging current and integrated BMS wake-up function, this charger can revive dormant lithium batteries triggered by low-voltage protection, making it ideal