JoostinOnline has update his PowerCheck utility to version 1.6. Use this Wii application to check the status of your wiimotes. See the change log below for what's new in this release.
Change Log 03/07/13 said:
•Huge improvement on the report accuracy
•Errors are now shown in red.
•You can now turn off the Wii with the POWER button
•Added version number to the app
•Some code cleanup