Compatible With:
Surface Pro 7/6/5/4/3, surface 3, Surface Studio 2, surface pro(2017), Surface Laptop 2, Surface Book 2, Surface 3. Surface
Digital pen MS(Microsoft）surface pen, Dell digital stylus, Hearing aid remote, Cameras and led flashlights, Bamboo ink pen, Active stylus pens, Asus stylus, Cordless phones, pen for X1 tablet, Google pixebook pen, Roke remote, Touchscreen pen, HP active pen, Acer stylus, Wacom intuos creative stylus, Asus Chi stylus, Dell Cenue pro 8 stylus, iPad stylus

Package Included:
4 x AAAA Rechargeable Batteries
1 xCharger

Safety Warning:
Do not mixed with a different battery type.
Do not inserted backwards or disassembled.
Do not carry batteries loose in your pocket or purse.
Do not remove the battery label.
Keep batteries away from children.
Keep batteries away from water and fire.

Note:
In order to extend battery life, please charge the battery first before using it for the first time and before long-term storage.
The batteries can only be used with device and charger with protective plates installed
. The capacity of the battery is 2800mAh, please charge it in low output current mode to prevent over-charge and over-heat.