Hi Alan,

> On 12 Feb 2016, at 4:14 PM, Alan Smith <sma...@iinet.net.au> wrote:
> 
> A few days ago the Bluetooth devices battery level indicators (for Apple 
> mouse and keyboard) suddenly changed to show 100 percent.   Late 2009 iMac; 
> OS X 10.9.5 Mavericks.
> 
> I changed the Magic Mouse batteries for some old ones.  Still 100 percent.  
> Did Restart then SMC reset.  No Change.

Have you tried re-pairing your devices?
> 
> Precursor to the problem - neither keyboard nor mouse would wake the iMac 
> from sleep - I had to use the Power button.    Bluetooth “wake” function has 
> worked since.
> 
> By the way, I checked “About This Mac” to get the OS X version, but I was 
> sure I had installed an update (10.9.6) fairly recently.

There is no 10.9.6 update! Development of Mavericks OS X 10.9 was finalized on 
10.9.5, the next release was Yosemite 10.10.5 and the most current version of 
OS X is 10.11.3 El Capitan.

Cheers,
Ronni
> 
> Regards, 
> Alan
> 
> Alan Smith
> Late 2009 iMac 21.5" Intel Core 2 Duo 3.06GHz 12G RAM - OSX 10.9.5 Mavericks
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