Uninterruptible power supply Keeps essential devices powered during outages by charging the lithium battery while supplying power, eliminating downtime and preserving operation. efficiency boost circuit Delivers up to 96% overall efficiency with a peak power of 20W and a rated power of 15W, minimizing energy loss through advanced MOSFET technology. Selectable output options Provides output voltages of 5V, 9V, and 12V to suit a range of devices, while maintaining performance under a 15W load. Comprehensive battery protection Includes multiple safeguards such as overcharge protection, overdischarge protection, and overcurrent protection to keep the lithium battery safe during operation. Use scenarios Home backup and critical device continuity: during power outages, keep your router, modem, and other essential devices running while the internal battery charges. Mobile or remote work: power and charge devices that require 5V, 9V, or 12V outputs up to 15W, for smartphones, tablets, or small electronics, in environments with limited power availability. Small system or accessory power: support 5V/9V/12V powered components in compact setups or remote installations, with builtin protection to safeguard the lithium battery.