We believe that you have received the Canoe Pc version recently. For some reason, the keyboard battery cannot be delivered overseas. I’m sorry that you need to buy it yourself. （But I may have found a new logistics company that can issue batteries, pending my subsequent updates）
I will send you the battery specifications and recommended installation methods.
First, the maximum size of your battery cannot exceed 90mm * 11mm * 6mm.The voltage of the battery needs to be 3.7V.
This will ensure that you can put the battery in this space.As long as you place the battery correctly, it will look like this.
How do we connect the battery? Find this connector on the back of the pcb, connect the positive and negative terminals of the battery, and the pcb will light up.Normally the red wire is positive and the black wire is negative.
Install the positioning plate, this will hold the battery tighter, then connect your Bluetooth device and enjoy.