Automatic power-off after 60 minutes of full charge to protect battery health Charges all wireless electronic shifting and dropper seatpost batteries, for RED ETAP AXS/FROCE AXS/RIVAL AXS/XX1 EAGLE AXSA/X01 EAGLE AXS/ AXS When not charging, the battery card displays the battery charge level. Leaving the charger plugged in for extended periods of time can be dangerous. Unplug the charging cable when not charging. Instructions: 1. Attach the battery card to display the current battery charge level. 2. Plug in the charging cable to charge (the green -Pattern symbol illuminate). Note:To protect the charger and battery, please follow the above charging steps. If you plug in the charging cable first, charging not occur and the current charge level not be displayed. Warning:All chargers are dangerous if left plugged in for extended periods of time. Unplug the charger when not charging. Color:Black Material:ABS Package Contents: 1 * Electronic Transmission Battery Charger Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.