How to change the battery of your CT5 key:

1. Hold the key on the side with your left hand.

2.拔出 the mechanical key with your right hand.

3. Align the key with the hole.

4. Push the battery holder forward to open the cover.

5. Remove the old battery by peeling off the protective film and pressing on the edge with your finger. Then, install the new battery.

Before replacing the battery, make sure to check the battery model. Only use a new battery with the same voltage, size, and specifications as the old one. Please follow the correct method of installing the battery. If the key is damaged during the battery replacement process, it will not be covered by the warranty.

To avoid the key losing power, try to use it within the range of its function. To prevent the key from becoming less sensitive, do not keep it near a magnetic source for more than 1 meter. Please keep your hands clean and dry when disassembling the key to prevent the battery from getting rusty.