Note these batteries are not the correct size for the new wedgebots. These are coming soon.
Additional batteries for your playable antweight robot from Tom B Prints.
The grey thwackbot allows you to replace the battery without modifcations so no waiting for the internal battery to charge.
The white robot needs some modification in its current version to be able to take out the battery. This is to remove a bit of plastic from the top cover to free the battery.
The battery is a niMH 150mah battery.
More on this modification later on.