Our company's newly developed and mass-produced flagship product integrates both charging and discharging management. The discharging management DC-DC provides a stable 48V voltage output. It achieves high efficiency under low output load conditions and maintains an efficiency of nearly 98% across the entire output current range. It operates with a fixed switching frequency, keeping the frequency constant during buck, boost, and buck-boost operations. The charging management uses constant current (CC) and constant voltage (CV) charging modes, and it monitors the battery temperature in real time to ensure battery safety. It heats the battery for charging when the temperature is below 0 degrees Celsius to guarantee the battery's service life. The entire charging process has an efficiency of nearly 95%.