The NOVEL 802040 Li-Polymer Rechargeable Battery is a compact, lightweight power solution designed for a wide range of portable electronic devices. With a nominal voltage of 3.7V and a capacity of 1300mAh, it delivers reliable and consistent power with a total energy output of 4.81Wh. Its slim pouch-cell design makes it ideal for space-constrained applications where both size and weight are critical considerations. This rechargeable battery is suitable for GPS trackers, Bluetooth speakers, wireless headphones, TWS earbud charging cases, smartwatches, fitness bands, MP3/MP4 players, IoT devices, smart home sensors, Arduino and ESP32 projects, and various other DIY electronics. The battery offers high energy storage capacity, long backup time, and can be recharged hundreds of times, making it a dependable choice for both consumer electronics and custom battery pack integrations. Dimensions: 8mm x 20mm x 40mm. Package includes 1 battery unit. 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.