How do you recalibrate the battery in a MacBook?

riffin

I haven't been able to fully charge my battery on my MacBook, and I thought recalibrating the battery might help. I'm not sure of the exact steps though. Anyone know off the top of their head how to do it?

Topic: Hardware
Answer this Question

Answers

2 total
jimlynch
Vote Up (12)

This might help:

Apple Portables: Calibrating your computer's battery for best performance
http://support.apple.com/kb/HT1490?viewlocale=en_US&locale=en_US

"The battery has an internal microprocessor that provides an estimate of the amount of energy in the battery as it charges and discharges. The battery needs to be recalibrated from time to time to keep the onscreen battery time and percent display accurate and to keep the battery operating at maximum efficiency. You should perform this procedure when you first use your computer and then every few months after that. If you normally leave your Apple portable computer connected to AC power and very rarely use it on battery power you may want to perform this process once a month. The website www.apple.com/batteries has more helpful information regarding batteries and offers an iCal calendar to remind you to calibrate your battery. "

dniblock
Vote Up (11)

 

It's super simple.  Direct from the horse's mouth, aka Apple Support:

 

"1. Plug in the power adapter and fully charge your PowerBook's battery until the light ring or LED on the power adapter plug changes to green and the onscreen meter in the menu bar indicates that the battery is fully charged.

2. Allow the battery to rest in the fully charged state for at least two hours. You may use your computer during this time as long as the adapter is plugged in.

3. Disconnect the power adapter while the computer still on and start running the computer off battery power. You may use your computer during this time. When your battery gets low, the low battery warning dialog appears on the screen.

4. At this point, save your work.  Continue to use your computer; when the battery gets very low, the computer will automatically go to sleep.

5. Turn off the computer or allow it to sleep for five hours or more.

6. Connect the power adapter and leave it connected until the battery is fully charged again."  

 

http://support.apple.com/kb/HT1490?viewlocale=en_US&locale=en_US

 

Ask a question

Join Now or Sign In to ask a question.
Advanced Micro Devices doesn't want its chips in low-priced tablets, and is eager to avoid a battle with Intel or ARM, whose chips have driven tablet prices down to under US$100.
Can plastic materials morph into computers? A research breakthrough published this week brings such a possibility closer to reality.
Even four months after the Mac Pro's initial release, Apple appears to be having problems making enough of the high-end cylindrical desktop computer. The company's store currently shows shipping times of 4-5 weeks for all Mac Pro models, even the stock versions without additional customizations.
Vendors will tell you that the Internet of Things (IoT) has arrived. We're here to tell you that it hasn't.
The U.S. commercial drone industry is still struggling to get off the ground more than two years after President Obama signed into law a bill that permits the civilian use of unmanned aerial vehicles (UAV) over the country's airspace.
Samsung is partnering with chip manufacturer GlobalFoundries to increase the supply of low-power, high-speed chips for smartphones and tablets.
Nokia has temporarily halted sales of the Lumia 2520 in seven countries, because the tablet's AC-300 charger can give users an electric shock.
Taiwan Semiconductor Manufacturing Co. said its net profit in the first quarter increased by 21 percent year-over-year on better than expected demand for smartphone chips.
Apple's inability to meet demand for its Mac Pro desktop computer has surpassed that of its most egregious Mac production problem in memory, the debacle over the all-in-one iMac of late 2012 and early 2013.
Big data analytics are driving rapid growth for public cloud computing vendors with revenues for the top 50 public cloud providers shooting up 47% in the fourth quarter last year to $6.2 billion, according to Technology Business Research Inc.

White Papers & Webcasts

See more White Papers | Webcasts

Join us:
Facebook

Twitter

Pinterest

Tumblr

LinkedIn

Google+

randomness