Q: Mavericks - power use / service battery

First started seeing the "Service Battery" warning 1-2 weeks after installing Mavericks. I restarted my MacBook Pro (15", 2.66 2011 Model) a few times since the install but never did a full shut down.

I just did a full shut down, started it back up and everything seems to have fixed itself. The "Service Battery" warning is gone and it seems to be charging alot better. Running much cooler as well.

Worth a shot.

Having a "service battery" message after upgrade to Mavericks. This already happened to me when I upgraded my other laptop from Leopard to Snow Leopard. Everyone at apple store was saying this is just a coincidence. I bought a new battery. But after my friend having similar issue downgraded back to Leopard his battery life got back to normal. I returned to the apple store and told them it couldn't be a hardware issue. They replaced my faulty battery the same day for free even out of warranty.

Today I was told I need to purchase a new battery. Story repeats... Feedback sent to apple. Dissapointed.

I'm also having a "service battery" message after upgrade to Mavericks.

I've been monitoring my battery through Coconut Battery and after i installed Mavericks i had 67% of max. capacity. Now, 9 days later, I'm having only 58%. Before that, I had more than 80%.

And another bad thing is that now the battery never lasts until 0%, sometimes it turns off at 10%

Before installing Mavericks my battery was ok, my Mac is Early 2011 and has only 877 cycles so far. Very dissapointed!

Just to add my 2 cents...Macbook pro 15" late 2011...I was getting around 2-1/2 hrs of battery life prior to Mavericks (not great to start but I digress) and now I'm lucky to get around a little over an hour. Coconut battery says my capacity is down to 62% and I only have 475 cycles on the battery. Already filled out the feedback form. Just waiting for a fix...fingers crossed...Sigh.

Full Charge Capacity (mAh): 4039

down from 5258 mAh on Nov 3rd...

cycle count: 57

bugreport is still open and in communication with engineers

there will be a fix, hopefully we will still have a battery...

Okay so here is an update to my earlier posts. I have continued to recalibrate my battery (let the battery drain to 0% ie turn off and then charge to 100%) I have seen HUGE improvements in battery life and no longer have the "Service Battery" warning. MacBook Pro 13in Mid 2009.

Yep, "Service Battery" appeared after installing Mavericks. 13" Mid 2009 MacBook Pro currently reporting 86% and 3:06 remaining.

Yep, I got the warning right after the Mavericks installation on my Macbook Air 4.2 (Mid 2011). I took it to Genius bar, and they replaced the battery free of charge with APP. Now the battery capacity is close to the desighed capacity of 6700mAh.

Having the same problem with this battery issue I just upgrade to mavericks  last night (what a mistake)and my MBP won't charge!!!!!  I try almost everything to fix it back but not even a SMC reset would work on this one almost every forum is saying that SMC reset would fix you battery issue !!!! Trust me it won't work!!!!!

I tried to downgrade back to the original Lion OS that was installed at the moment of purchase. It didn't help, still Service Battery message shows up, so I returned back to Mavericks with time machine.

Well, I ordered a new RMBP today (wanted to upgrade for a long time) and got $150 black friday gift card. It will be enough to replace the battery and keep my MBA

Does anyone have experience getting the battery replaced out of warranty? I did it once as I posted earlier, genius guys were very helpful ("70% of capacity with under 300 cycles is a defective battery" they said for my 2 year old MBP) but now it doesn't work ("Your laptop is 16 months old and we don't care if the battery is 70% under 200 cycles, it's your problem now").

Don't replace u battery - wait - it will sort itself out

I can't wait for Apple to fix this with a software upgrade so just paid them $129 to replace the battery. My MBP is barely two years old, the battery certainly shouldn't have died this early. And it died hard, dead, bricked. The system wouldn't even acknowledge that a battery was installed.

Hopefully i'll be able to get a refund on my money when Apple finally acknowledge that they're bricking batteries.

Late 2009 MacBook with 241 cycle count. Pre-Mavericks, I would get 4-5 hours of battery life with proper warning before the machine shut down. Post-Mavericks, I get 2-3 hours of battery life and the machine simply powers off (NOT suspends!) because it never seems to see the battery drain coming. Very disappointed, no idea what to do about it.

Much the same here, 2007 MBP with  390 cycles. Occasionally, it'll report some very low capacity & then actually warn & save before shutting down... but usually not, while continuing to say the battery is ok.

Started with 10.9 but persists in Snow & ML too.

I have this problem as well. MacBook Pro 15 inch early 2011.

  Charge Information:

  Charge Remaining (mAh): 897

  Fully Charged: No

  Charging: Yes

  Full Charge Capacity (mAh): 5199

  Health Information:

  Cycle Count: 188

  Condition: Service Battery