The CS-GRF225SH is a replacement for GARMIN Smartwatch Battery. The battery is 100% compatible with the original GARMIN batteries and other equipment including chargers. The replacement battery has been specifically designed to fit GARMIN models: 010-01959-00, Approach G10, Forerunner 225, Forerunner 235, Forerunner 630, Forerunner 735XT, GRM0371754. Buy a suitable replacement battery for your device and compare the original GARMIN part number that appears on the original battery with the following GARMIN part numbers: 361-00072-10, 361-00086-00. Type: Li-Polymer