Router Hotspot Battery M20 3.7V for M20/M20H Dialog MIFI Wi-Fi Key Features: Compatible with M20/M20H Dialog MIFI Wi-Fi routers. High capacity 2000-3000mAh battery for extended use. 3.7V power output for reliable performance. Ideal replacement for old or worn-out router batteries. Lightweight and easy to install. This battery is designed to provide long-lasting power to your M20 or