Mavericks - power use / service battery

I am having the same issue. Mid 2010 13 MBP. Prior to Mavericks I was getting at least 6 hours of use and not I barely get 3. Service Required. I have submitted feedback to Apple as I am not convinced they actaully monitor these forums very closely. This is quite disappointing. What the **** happend to QA?

Apple you need to get this corrected. I work un-attached a lot and this now makes it nearly impossible.

Charge Information:

Charge Remaining (mAh): 2435

Fully Charged: No

Charging: No

Full Charge Capacity (mAh): 4398

Health Information:

Cycle Count: 289

Condition: Service Battery

Battery Installed: Yes

Amperage (mA): -1100

Voltage (mV): 11385

My Anecdote (seems to solve it for me).

2011 MBA, 389 cycle count.

After upgrading to Mavericks I noticed no difference in power usage & battery life.

However I have been using a 3rd party tool for my status bar battery:

https://github.com/codler/Battery-Time-Remaining

Reading about Mavericks upgraded battery monitoring I removed it and reenable the os x batter monitor in the status bar.

Very soon, by I noticed fans whirring and poor battery life (it didnt click at this point).

I check Activity Monitor and notice 2 tasks taking approx 99% cpu each (systemstats & kernal_task).

Reboots ensured - problem still there

Reset SMC - no change

This morning I remembered the battery tool and tried disabling the Mavericks battery monitor (in Energy Saver Prefs) and rebooting.

Problem instantly solved.

Ive gone back to the batty monitor I used previously on ML, and no problems.

(I now have 31% battery showing 1:59 left)

This seems to be the issue for me (I never got the service battry warning - but I did notice the tasks burnign up the CPU)

Hope this helps someone..

Did I understand correctly: you suggest to simply uncheck the 'Show battery status in men bar' option in in the left bottom corner of the Energy Saver/ Battery menu ?

Yes - then rebooted.

I've tried doing the recalibration and it's not good news. See graph below.

Prior to doing it my capacity seemed to be recovering slowly but the drain to 0% and recharge has resulted in a massive drop right back down. So, prior to Mavericks I was at 5696mAh, post Mavericks 4796mAh.

I've tried your procedure, even installed the alternative battery monitoring tool.

Now I get 4:45 of battery life with 90% of battery charge, still away from what I used to get with ML (more or less 2 hours more).

Did you have the same problem? Heavy cpu use? Especially from task systemstats. Fans on max?

I've just installed Mavericks and have the same issue with Service Battery message....not happy Jan. Also finding battery life reduced, not improved by Mavericks.

MacBook Air 13" Mid 2011

Cycle count 346

Hope Apple find issue and repair with update.

Bad news: Rolled back to Mountain Lion and service battery warning is still there. Upgraded back to Mavericks, service battery warning remains.

Good news: Apple Care reads this forum discussion and is aware of the issue. They contacted me and requested syslogs for analysis.

Now we wait patiently.

Thanks for this suggestion. I tried it, and while the new monitor is cool with many features, it made no positive impact on my battery life. Still dismal. Hopefully Apple addresses this quickly.

SimpleTool wrote:

Thanks for this suggestion. I tried it, and while the new monitor is cool with many features, it made no positive impact on my battery life. Still dismal. Hopefully Apple addresses this quickly.

They had to address it in Mountain Lion, so I would hazard a guess that the same will happen with Mavericks for those with issues. As it is not widely spread it may just take a little time for them to address it.

Cheers

Pete

My Early 2011 Macbook Pro Bettery Capacity Drop from Original 6900 to only 288 mAh after upgrade to OSX Mavericks with only 162 Cycles. Sercive Battery Notification keeps showing on the Battery Status Bar. Hope Apple solve its soon with OS upgrade

My Late 2011 Macbook Pro 17" is also showing the "service battery" message after upgrading to Mavericks. Only 342 cycles on it and the battery appears to be charging just fine, but the current max has dropped from close to 6000 mAh to 4970 mAh. Very disappointing, hopefully Apple gets a fix out soon.

Also experiencing this problem now... Having a late 2009 MBP but battery has already been replaced lass than a year ago with a charge cycle count of 56 at the moment. also the full capacity charged dropped to 5258 mAh. very annoying, let's all hope for an update

Believing the Systeminformations, my full capacity charge dropped further down to 5147 mAh during the last 7 or so hours, without even unplugging from power supply... That's just wrong....