【Large Capacity】: Experience extended usage with the UV-21R Battery's impressive standby time of 5-7 days, ensuring uninterrupted communication during your adventures. 【USB-C Charging】: Conveniently charge anytime, anywhere, with USB-C compatibility, offering versatility and ease of use for on-the-go charging. Utilize USB direct charging or desktop charging methods for added flexibility and convenience in powering up your device. 【Portable Design】: Take your power solution wherever you go with the UV-21R Battery's portable design, allowing for easy transportation during outdoor activities or travel. 【Compatible】: UV-21/UV-21R/UV-21 Pro/UV-21 Pro V2/UV-21 Pro V3