This lithium-ion replacement battery is compatible with the Garmin Alpha 100 Handheld and Garmin Alpha 200 Handheld. Small, compact, and very easy to install, this battery is ideal as a direct replacement or as a spare to carry in the field. Swapping batteries takes about 30 seconds, making it easy to stay operational if you receive a low-battery warning during a hunt or training session. When fully charged, the battery provides up to 20 hours of use, depending on backlight settings and usage. A fully depleted battery takes approximately 4½ hours to recharge. Key Features Compatible with Garmin Alpha 100 and Alpha 200 handhelds Compact and lightweight for easy field carry Quick-swap design with no tools required Up to 20 hours of battery life (usage dependent) Reliable OEM replacement fit and performance Battery Replacement Instructions Place the handheld with the screen facing down Lift the battery cover lock and turn it counter-clockwise 90° Remove the battery cover Lift the battery from the top and pivot it out Install the new battery with the lettering facing up and the gold contacts aligned Reinstall the battery cover and lock it by turning the key clockwise 90° Additional Information Garmin Part Number: 010-11654-11 Compatible with the following Garmin Devices: Garmin Alpha 100 Handheld Garmin Alpha 200 Handheld Garmin Alpha 200i Handheld Garmin Alpha 300 Handheld Garmin Alpha 300i Handheld