I found another post for the Cordless mower here by dansblackcat dated July 2012

https://www.outdoorking-forum.com.au/forum/ubbthreads.php?ubb=showflat&Number=38204&page=1

This example has a charge indicator decal

[Linked Image]

Not sure if mine had one originally or not, can't see a decal in the advert above.