CMH Quarq power meter battery cover removal tool

How to use it ?

Position it over the cover and turn it until you feel the splines engage, then push it into position.

To assist with this, there are marks on the outside of the tool to help you line it up with the splines, because all of this can be hard to see, especially if you (like me) need readers.

It can be done by feel but the marks can make it easier. Then simply turn it counterclockwise to remove!