The NOVEL 12V 4200mAh Li-Ion Battery Pack is a rechargeable, high-performance power solution designed for a wide range of applications. Built with 3S Li-Ion 18650 cells and featuring an inbuilt Battery Management System (BMS), this compact battery pack delivers stable voltage output and reliable backup power. The BMS protection safeguards against overcharge, over-discharge, short circuit, and overcurrent, ensuring safe and consistent performance. With a nominal voltage of 12V and a capacity of 4200mAh, it is well-suited for CCTV cameras, LED emergency lights, Wi-Fi routers, DIY electronics, portable speakers, RC toys, mini UPS systems, robotics, and solar backup applications. The DC pin/wire output makes it easy to connect to compatible devices. Its lightweight and compact design makes it highly portable and convenient to use. The battery pack comes with a long recharge cycle life, making it a durable and dependable power source. Package includes 1 x 12V 4200mAh Li-Ion Battery Pack with inbuilt BMS. Please use only the specified charger and charge the battery at least once a month even when not in use. NOVEL batteries are designed to deliver reliable, stable, and long-lasting power for a wide range of electronic devices and DIY applications. Built using quality cells and advanced safety features, they provide dependable performance for gadgets, portable electronics, RC toys, CCTV systems, emergency lights, Bluetooth devices, routers, wearable devices, and more. Compact, lightweight, and easy to install, these batteries are manufactured by ELECTROV8 PVT LTD in India and are suitable for everyday power requirements.