Integrated four fold protections ( overcharge / overvoltage / overheating / overdischarge) and real time battery / voltages / temperature via a screen ensures reliability for powerbank projects Perfect for camping trips, emergencies power backups, or daily commutes where clear battery statuses visibility and rapid 22.5W fast charging are critical Empowers your devices with the 22.5W Fast Charging Module featuring a color display, protocols, and double USB and 1 Type C port for universally compatibility across for smartphones Ideal for enthusiasts, outdoor adventurers, and frequent travelers needing a customizable, high efficiency charging solution for phones and portable gadgets Note: Please power on the screen before welding When connecting the battery, the screen must be operated normally When connecting the battery, you must use a 3.7V ternary lithium batteries and solder it in parallel It cannot be connecting in series to avoid burning the motherboard, Manufacturer: WNXGNHO