Follow these tips as the rules of the road for charging and monitoring your battery:
- Recharge when powered off or in sleep mode. The Macbook battery recharges quicker when your laptop is in sleep mode or turned off.
- If possible, keep your Macbook plugged into the AC socket. You should take every opportunity to top off your Macbook’s battery. If there is not much time to charge the battery before you’re away for a long time from an AC socket - say, thirty minutes - you shouldn't use your MacBook whilst it is charging and plugged in.
- Save your Macbook's juice. To scavenge the most juice , here are a few easy tricks:
- Turn off your Macbook or put it into sleep mode.
- Don't use unnecessary hardware. You can conserve battery power effectively by disconnecting any USB or USB devices, and turning off your AirPort and AirPort wireless hardware, if you are not connected to a LAN.
- Lower the brightness of your LCD screen from your Macbook’s keyboard, using the F1 key.
- Take out CDs and DVDs from your optical drive. (For MacBook Air users, don’t go hunting for the built-in optical drives, because your Macbook does not have one.)
- Track the battery level with the Finder menu. Your Macbook’s battery power can be displayed at the Finder menu in several different views - one useful feature is the power indicator that is shown in percentage (with a full battery is registered at 100%). To know the percentage, just click the battery icon at the Finder menu and select Show>Percentage.
Always remember that the percentage shown is just an estimation based on your current power usage, and System Preference settings, so if you modify the Energy Saver settings or disconnect a USB device that draws battery power from your Macbook, you’ll see that change is reflected in the battery percentage meter.
You should calibrate your battery. You may “train” your battery to deliver the maximum charge by proper calibration, which Apple recommends doing each month.
It’s a snap:
a. Charge the battery until the battery power indicator shows that your unit is completely charged at one hundred percent.
b. Keep your Macbook connected to the AC socket for another 2 hours to ensure peak battery capacity.
c. Unplug the power cord and turn on your Macbook using only the battery power until it is completely discharged and your Macbook will be automatically switched to sleep mode. Be sure that you close all your programs when you see a low battery warning pop up so that you won’t lose anything.
d. Allow your Macbook to sleep (or turned off) for a full 5 hours.
e. Reconnect your Macbook to the AC cord and charge the battery.
If your Macbook battery is no longer holding enough charge - in other words, when you fully charge the battery and unplug the power cord, only to find out that you have only a couple of minutes of battery life - it is time to buy an original replacement battery. The owners of MacBook Pro and MacBook can buy a new battery and replace the battery at home (bought from Apple or any authorized vendors), but for MacBook Air owners, the laptop must be brought in for servicing. Macbook Air is a sealed model; you cannot replace the battery yourself.
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