CA-403S 40W Mini Router UPS Board V2.6 11.1V 3S Lithium Battery Charging Module for DIY Uninterruptible Power Supply Backup

Product descriptions from the supplier Intelligent Uninterruptible Power Supply (UPS): Features automatic power source switching to ensure your router, modem, or security camera remains powered during unexpected outages. 40W High-Efficiency Output: Robust 40W power delivery designed to handle high-current DIY projects and professional networking equipment with ease. Optimized for 3S Lithium Packs: Precision engineered charging and protection module for 11.1V/12.6V 3-series