Don’t plug the battery in backwards.

A few schools have reported brainboxes not turning on. On examination we have found that the power board in the brain box has been blown up due to the battery being able to be plugged in backwards. This is meant to be prevented by the green connectors being keyed. However it is possible to force the connectors in the wrong way up. The brain box looks like this:

Note: which way up the circles are and which way up they are on the connector. Always plug the side with circles into the side with circles and nothing will go wrong.