Fuhjythy Type-C 15W 3A 18650 Lithium Battery Charger Module DC-DC Step Up Booster Fast Charge UPS Power Supply Converter Easy Install 12V

Seamless switching between external power supply and battery dual power supply (no delay). This product is suitable for non-power-off applications of equipment during power outages. It uses external power supply when there is power and automatically and seamlessly switches to battery power supply when there is a power outage. Suitable for routers, cameras, development boards and other equipment, it can seamlessly switch to battery power supply when power is off, and is continuous when power is off. Uninterrupted power supply, self-starting when power outage, self-charging when power comes in. Two-color LED indicates the charging status, the green light is always on when full, and charging automatically stops. Type-C interface, large passing current