The 12V Uninterruptible Power Supply (UPS) Module with Dual 18650 Battery Slots is a high-efficiency backup power management board designed to keep 12V hardware running seamlessly during blackouts. Operating at a high capacity of 15W, this module features a modern USB Type-C port for primary power input and steps up energy efficiently to deliver a continuous, regulated 12V output at the UPS+ / UPS- terminals. It features a dual onboard 18650 battery holder that charges the cells during normal operation while providing instantaneous, glitch-free fallback power the millisecond mains power drops—making it the ideal solution for Wi-Fi routers, smart home hubs, and modems.