Uninterruptible Power Supply (UPS): Ensures continuous power delivery by charging the lithium battery while supplying power to your devices, eliminating downtime during outages. Efficiency Boost Circuit: Achieves up to 96% efficiency with a peak power of 20W and a rated power of 15W, minimizing energy loss with its advanced MOSFET technology. Selectable Output Options: Offers output voltages of 5V, 9V, or 12V, making it suitable for various devices while maintaining performance under a 15W load. Comprehensive Battery Protection: Equipped with multiple safeguards including overcharge, over discharge, and over current protection to keep your lithium battery safe during operation. Use scenarios: During power outages at home or office, the unit charges the lithium battery while supplying power to essential devices, reducing downtime and protecting ongoing work. On a desk or in a workshop, it provides stable 5V, 9V, or 12V output to power or charge a range of small devices within a 15W load, with efficiency. For ongoing backups or testing setups, the builtin protections help preserve battery health by preventing overcharge, over discharge, and over current conditions.