4063 is a programmable charging current 5A lithium battery charge management chip, it uses 600KHz synchronous step-down topology, FH4063 charge cut-off voltage includes 4.2V\/8.4V\/12.6V\/16.8V, ±1% cut-off charging voltage, battery charging is divided into three stages: Pre-charge, Constant Current (CC\/Constant Current) and constant Voltage (CV\/Constant Voltage) processes.