Due to the age of this device, unfortunately, we no longer have any stock of the G2 battery in any of our warehouse locations globally.
If you wish to try and source a replacement battery yourself please see the below diagram for specifications and dimensions.
The battery is a 7.4V battery pack formed by two single batteries of the same specifications in series.
Please note that this is not a service manual or repair guide. Each battery needs built-in protection components to ensure the safe work of lithium batteries.