To convert a Dayi battery into a power bank, you first need to buy a power bank shell and ensure that its size is suitable for the Dayi battery.
Then, open the battery case and remove the battery.
Next, connect the battery to the circuit board of the charging bank housing, making sure that the positive and negative terminals are properly connected.
Then, close the charging bank shell to ensure that the battery is securely fixed.
Finally, connect the power bank to the power supply using the charging cable to start charging. Remember to pay attention to safety during use to avoid problems such as overcharging or short circuit.