Can you guys help me on how to charge my 2012 macbook pro.

I wouldn't freak out too much about the stats on a new laptop. It takes time to gather enough data points for a reliable battery estimate. You might even see the battery health number fluctuate upwards at times, especially in the beginning.

Apple uses the same batteries as everyone else. Just use the ground rules for lithium-ion batteries. Avoid deep discharges. Keep it cool. That's really all you have to do. Do what it says in these tech notes.

http://support.apple.com/kb/HT1490

http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batterie s

christian97 wrote:

can you guys really explain how to do a cycle charge and when? every week, every month or every day? and what percentage do i need to cycle charge? 25%, 50%, 75% or what? Can i charge it overnight? can i leave it charge for 9 or 15 hours because I'm to going to school and i didn't bring it to school? Can i use it while charging? can i use it while charging for the whole day? when do i need to unplugged it? What do you thing guys do i really need to calibrate my Mid-2012 Macbook Pro? And I saw this stats on a app called Battery Health and I saw my battery health it's 98.6% (5692 mAH) from the original (5770)

A cycle charge is to charge the battery and use your computer with the battery until the battery runs out. That's a cycle, and you should do it at least once a month to keep the battery life.

The battery will stop charging when it's full, so you don't have to worry about this. When the battery is full, the charger will show a green light.

It's completely normal that the battery health decreases with the use of the Mac. OS X will advise you when the battery must be replaced

That's the normal use you should give to your Mac

On that article, the calibration is referred to all MacBooks Pro with removable batteries, and your MacBook hasn't got a removable battery, so you don't have to calibrate your battery

I rectified that. The normal use of a MacBook is to charge the battery and use the battery until OS X advises you to charge it, and that's correct. As the battery is pre-calibrated, you don't have to run out the battery. Sorry for confuse you

christian97 wrote:

What do you mean "That's the normal use you should give to your Mac"? The one that i said "I want to do is fully charge it and use it without the charger connected, can i do that everyday? " And what do you also mean "At least once a month, I recommend you to use the computer until the battery runs out, and then charge the battery" Is that a calibrating a battery? But some other user said that I shouldnt run my battery out, I should charge it on 20%. Is that true?

If you read the second link I posted, it gives more details about this. Lithium-ion batteries last longer with shallow, not deep, discharges. This means if you use it every day, draining the battery partially (maybe to 60-80%), and charge it back up to full, that's good. But if you use it every day draining it until the battery is completely empty, that's bad and will shorten battery life. That's why I keep it plugged in when near an outlet.

Refer to Table 2 in the Battery University link I posted: "Table 2: Cycle life as a function of depth of discharge. A partial discharge reduces stress and prolongs battery life."

But let's be realistic. If you cannot reach a power outlet for most of the day, then you have only so much control over your cycling pattern; use the battery as you need to get your work done, even if that means emptying it frequently. Simply budget for a potential battery replacement sooner than other users. Apple does provide a battery replacement service for a fee.

You'll be fine using the battery to the 10% mark daily - you'll just have more cycles. And that's not a bad thing. Notebooks are supposed to be used on battery. Just don't let the battery completely drain and you'll be just fine.

Good luck,

Clinton

christian97 wrote:

What if i do is drain it to like 45% then charge it up everyday, is it fine? Is it considered cycle charge?

As I understand it, a cycle is a complete trip to 100%. So if you drain to 45%, charge to 100%, drain to 45% the next day, and charge to 100%, you've done 0.9 cycles, not 2 cycles.

I disagree with clintonfrombirmingham that draining to 10% is "fine," because a 90% discharge should count as a deep discharge which is not recommended. But again, if you must get work done and can't get to an outlet, don't worry about it...get your work done.

christian97 wrote:

I have another question. Can i charge it while the macbook is folded and sleep? im new to the mac!

It's no different than any other phone or PC laptop, you can charge it whether it's on or off, closed or open. Basically, you can connect the plug at any time. But it should charge faster if it's sleeping or shut down simply because all power can go straight to the battery.

Anythig that works for you - just be mindful in not letting the battery below the 10% or so mark before plugging back up. I used my battery like that for months and months and am left with a battery that's 99% 'heathly'.

Good luck,

Clinton