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Battery level for mouse and keyboard always 100%

The battery level shown in the bluetooth menu and in the system preferences mouse and keyboard panes constantly shows 100% and never declines. Does anyone know the solution to this to start getting realistic readings again? I've tried trashing the bluetooth plist and restarting but that hasn't made any difference.

Many thanks for any help

James

iMac 27" i5 2.8GHz 12Gb, Mac OS X (10.6.6), Time Capsule, Lexmark C734dn

Posted on Jan 10, 2011 2:31 PM

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29 replies

Feb 21, 2012 6:53 AM in response to James Blandford-Baker

I am running OS X 10.7.3 and still have this problem. The battery levels for both the keyboard and mouse read 100% and I really don't know I need to replace the mouse batteries until it just starts malfunctioning. The battery levels used to go progressively down so you could track battery level.


Been over a year now since this problem has been reported and we need a fix!

Mar 19, 2012 7:32 AM in response to James Blandford-Baker

Simple experiment:


Magic Trackpad shows 30% battery after a month, Wireless Keyboard shows 100% still. Both have the original alkaline batteries installed on the same day.


Swap the batteries between devices, and all of a sudden I get 89% on the trackpad, and 17% on the keyboard.


Swap back and we're back to 30 and 100%


Makes no sense in terms of one drawing more power than the other: you'd think that if the keyboard needs less power, explaining why it can stay at 100% for so long, it'd report MORE life left in the batteries from the trackpad than the trackpad does, when in fact it reports LESS. Same applies in reverse the other way around.


However it does at least tell me that the keyboard IS capable of recognising depleated batteries, and will warn me in time to replace them.


Come on Apple, surely with your technical abilities you should be able to report battery percentages correctly by now?

Sep 4, 2012 11:16 AM in response to James Blandford-Baker

I stumbled across this thread looking for the same info; why my iMac's Apple BT Keyboard reading is 100% even after a couple of weeks of use. (My Magic Trackpad's battery reading is fine however.) I use Sanyo eneloop NiMH rechargeable batteries (which are awesome BTW) to power both my Keyboard and Trackpad.


I found the answer to this issue, at least in my case, (as well as a great little battery widget/monitor) here:


http://www.starmerville.com/mm/mightymonitor/News/Entries/2011/8/1_Mighty_Monito r_NiMH_Battery_optimization.html


It's not a complete fix (see the last paragraph in the article) but hope this helps anyone that follows!

Dec 30, 2013 4:10 PM in response to Lone Survivor

As I mentioned in my Sep. 2012 post (above) I was experiencing this battery level issue on the BT Keyboard I was using with my '08 24" iMac (running OS X 10.8 Mt. Lion) . I was using Sanyo eneloop NiMH rechargeable batteries and the link I posted partially explained why the battery level readings could be skewed so I stopped worrying about it. I did get the pop-up notice when the BT keyboard batteries were low however...even though the battery level reading still said 100%.


Since then I purchased a Late 2013 27" iMac - OS X 10.9.1 Mavericks - and I am seeing the same issue with the Energizer Alkaline batteries that came with my new iMac.


As before, the Apple BT Trackpad battery levels on my new iMac show normal readings, however the Apple BT Keyboard always shows 100%.


Since getting my new iMac I've only had to replace the batteries on my Trackpad once but not the BT keyboard. I guess I won't know they need replacing until I get the pop-up notice or it just stops working.


So I agree, it would be nice if this issue was resolved!

Feb 28, 2014 11:00 AM in response to James Blandford-Baker

More than 3 years now and there is no fix. I have the same problem with Magic Mouse battery level always %100.


What I can add to the discussion is that I think an App is causing this. I fresh installed Maveriks about two months ago and after the fresh install the battery level indicator was running without a problem. I re-installed all the apps I use again and go on. Than the batteries died and I replaced them. Now again the same problem...

Feb 28, 2014 12:41 PM in response to Alpini

Sorry to hear that you're still having issues. FWIW my Apple wireless keyboard and trackpad levels do seem to be behaving better (OS X 10.9.2 using eneloop batteries). I can't tell how accurate the levels are though. It shows 100% for a little while then starts dropping. I replaced my keyboard batteries a few weeks ago and it's showing 99% now. Replaced the trackpad batteries January 9th and it currently shows 43%. So I'm not certain it's all that accurate. At least they aren't pegged at 100% until they need replacing now.


This article helps explain why readings might be wonky...


http://www.starmerville.com/mm/mightymonitor/News/Entries/2011/8/1_Mighty_Monito r_NiMH_Battery_optimization.html


I always have spare sets of batteries charged and ready to go anyway.


Thanks for the update and if you figure out if it is an app, let us know which one.


Cheers!

Mar 11, 2014 6:45 AM in response to James Blandford-Baker

I'm having an issue with Magic Mouse BT Battery Level indicator as well. This just started happening to me since 10.9.2 update. It has been stuck at 8% for several days now. I put fresh batteries in, rebooted the iMac, opened and closed System Preferences and Mouse Settings and rebooted again, but the warning is still in the menu bar saying 8%. Two steps forward and three steps back.

Mar 11, 2014 8:29 AM in response to 24434everyday

24434everyday wrote:


I'm having an issue with Magic Mouse BT Battery Level indicator as well. This just started happening to me since 10.9.2 update. It has been stuck at 8% for several days now. I put fresh batteries in, rebooted the iMac, opened and closed System Preferences and Mouse Settings and rebooted again, but the warning is still in the menu bar saying 8%. Two steps forward and three steps back.


It is frustrating. As mentioned earlier, all three of our Macs are on 10.9.2 and although it might be improved IMHO, the keyboard and trackpad battery levels seem to be fairly accurate now.


Try doing these two things and see if it doesn't at least correct the stuck level percentage...


http://support.apple.com/kb/ht3964


http://support.apple.com/kb/ht1379 (probably not necessary, but worth a try if the SMC reset doesn't do it)


Best of luck and let us know how it goes!

Battery level for mouse and keyboard always 100%

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