It is easy to change the battery in the ooono co-driver. It is a 3V CR2450 lithium button battery. Below you will find a video that shows how to replace the battery. ⚙️
🔺 Important: Please, connect your ooono co-driver and ooono connect app manually the first time after the battery change. Open the ooono connect app and press the ooono button for 5-7 seconds; then your ooono co-driver should connect. Now, your ooono co-driver works automatically again.