MPPT function supported and compatible with solar panels to enable efficient solar charging. Automatic voltage regulation with PWM control and mode switching delivers smooth voltage rise and fall, protecting devices from spikes and enabling efficient charging even when input voltage varies. Builtin protection mechanisms include overcurrent, overvoltage, short circuit, and overtemperature protection for safer, more reliable operation. Fully compatible with fast charging protocols such as QC, PD, SCP, VOOC, and more, meeting the charging needs of the vast majority of electronic devices with a single board. Designed as a practical, singleboard solution that supports worry charging across a wide range of devices and scenarios. Use scenarios: Outdoor or offgrid charging with solar panels: connect the board to a compatible solar array to charge phones, tablets, and USB devices quickly and safely, benefiting from MPPT efficiency and protection features. Invehicle charging: integrate the board with a vehicle battery setup to provide fast, safe charging for phones and other USBpowered devices while on the move, with voltage regulation that guards against input voltage. Home or office charging hub: use as a versatile USB fastcharging board to power multiple devices with QC, PD, SCP, VOOC compatibility, ensuring fast and safe charging for daily devices.