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Switcher Hangout The place for switchers to discuss their new machines, and how to work with OS X. General support can be had here for newbie stuff, like "How do I restart my new iMac?" :)

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Scoobie Newbie

 
Member Since: May 03, 2008
Location: Canada
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Mac Specs: 17" MBP, 2.5 GHz, 4GB RAM, 250GB HDD, OSX 10.9.....iTouch 4, 64gB....iPhone 5

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My Mac used to let me know when I had 10 min of power but now it just shuts off. Any idea on how to put that warning back on? Thanks.
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chscag

 
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What's the condition of your battery? Download the free coconutBattery 2.7.2 to see what the overall condition of your battery is. Your battery may be diminishing too fast when it gets low in order for the 10 minute warning to be issued.
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Scoobie Newbie

 
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battery is good 73% capacity
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chas_m

 
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How old is this battery? 73% would suggest it's pretty old.
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Scoobie Newbie

 
Member Since: May 03, 2008
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Curent capacity is 4363 mAh, design capacity 6300 mAh with 290 load cycles
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Scoobie Newbie

 
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Well I thought it was the battery but it happened again. I tried to restart it with no luck. I plugged it back in and fired it up. I still have 58% battery left so I am totally confused not as to what the issue is.
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pendlewitch

 
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Have you recalibrated the battery at all?

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TilkiliKiz

 
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What battery is the OP speaking of? And is the only way to find out status of the battery with that coconut battery ?
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pendlewitch

 
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Quote:
Originally Posted by TilkiliKiz View Post
What battery is the OP speaking of? And is the only way to find out status of the battery with that coconut battery ?
Hi,we assume that it is the proprietary battery and there are several ways because this is a smart battery.

Here's one:

http://batteryuniversity.com/learn/a...ery_fuel_gauge

iMac 27-inch Mid 2010, WD My Book 1TB Firewire,WD My Passport Air 500GB, Magic Mouse,Magic Trackpad,
iPhone 5C, iPod Nano 4GB 3rd Gen,ATV2, Samsung LE40 Series 6, Denon AVR1910, Kef HTS 1001.2s and Kube-1 Sub
Denon DCD510AE, Panasonic DMP-BD60,Sky+HD,Logitech Harmony One Advanced. MOTM October 2012.
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Scoobie Newbie

 
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I have no idea how to recalibrate the battery. It is the second battery I have owned, from the Mac store. computer is over 3.5 yrs old I am concerned that it is not the battery now as both Coconut and the computer both indicatied that the battery was 58% full when it shut off this time. The times before I just assumed it was the battery. This has happened about 3-4 times now.
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Scoobie Newbie

 
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Happened again at 58% power, unplugged. Plugged in and it is working fine. Battery icon says service battery.
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chscag

 
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The battery may actually be bad. Why don't you try a new battery and if it does the same thing, return the battery for a refund. Or have them check it out at your local Apple store.
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pendlewitch

 
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Quote:
Originally Posted by Scoobie Newbie View Post
I have no idea how to recalibrate the battery. It is the second battery I have owned, from the Mac store. computer is over 3.5 yrs old I am concerned that it is not the battery now as both Coconut and the computer both indicatied that the battery was 58% full when it shut off this time. The times before I just assumed it was the battery. This has happened about 3-4 times now.
Hi,

Follow this link which explains things for you.
Apple Portables: Calibrating your computer's battery for best performance

What chscag says is probably right though, but if you are looking at potentially your third new battery in 3.5 years it might be that your charging regime needs adjusting to something more suited to Lithium which is in essence to recharge more regularly in smaller amounts rather than big, big recharges from the red-zone and beyond.

iMac 27-inch Mid 2010, WD My Book 1TB Firewire,WD My Passport Air 500GB, Magic Mouse,Magic Trackpad,
iPhone 5C, iPod Nano 4GB 3rd Gen,ATV2, Samsung LE40 Series 6, Denon AVR1910, Kef HTS 1001.2s and Kube-1 Sub
Denon DCD510AE, Panasonic DMP-BD60,Sky+HD,Logitech Harmony One Advanced. MOTM October 2012.
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Scoobie Newbie

 
Member Since: May 03, 2008
Location: Canada
Posts: 171
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Mac Specs: 17" MBP, 2.5 GHz, 4GB RAM, 250GB HDD, OSX 10.9.....iTouch 4, 64gB....iPhone 5

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Thanks pendlewitch, I do big charges actually. Drain to close to nothing then recharge. I will adjust accordingly.
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dtravis7

 
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My ibook did that and it was the battery. It started not giving the warning then as time progressed, it shut down at a higher and higher percent.
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