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Well I reckon you should at least turn it off at night... Do you?

I do turn it off during the night. I allow it to sleep when I'm going from the library to class or from class to go home/eat/hang out with friends. Just daily things one would do.
How much do you run on battery?

I'm a student, so I'm always on battery during the day and plugged in during the night. I do plug in when I run out of battery, but I allow it to fully charge before I leave to go do any errands.
 
I'm a student, so I'm always on battery during the day and plugged in during the night. I do plug in when I run out of battery, but I allow it to fully charge before I leave to go do any errands.
While it doesn't hurt at all to fully charge it before unplugging, it's not required:
You can also recharge a lithium-ion polymer battery whenever convenient, without the full charge or discharge cycle necessary to keep nickel-based batteries at peak performance.
 
Any explanation as to why my battery health is so low? It's been decreasing since I've gotten my MBP. It goes up but drops right back down when I charge it. A lil confused...=/

It's normal for it to go up and down over time. Mine has gone as low as 88% and as high as 100%. It can be 93% one day and two days later, it's at 96%. It's only an estimate and isn't completely accurate. Calibrating makes the reading more accurate, but it's still an estimate. As long as it doesn't drop below 80% before the 300/1000 cycles (depending on your model), there's no cause for concern. If it is properly calibrated and drops below 80% before those cycles are reached, Apple will replace it as defective.
 
@elpmas

Thats the power management, don't worry about numbers. You wont drop below 90 before one year of use.

And Sleep does not harm the computer or shorten its live. Temperatures below 100°C are no Problem at all. Maybe the Battery is not that glad about high temperatures but every other component just does not care.
 
It's normal for it to go up and down over time. Mine has gone as low as 88% and as high as 100%. It can be 93% one day and two days later, it's at 96%. It's only an estimate and isn't completely accurate. Calibrating makes the reading more accurate, but it's still an estimate. As long as it doesn't drop below 80% before the 300/1000 cycles (depending on your model), there's no cause for concern. If it is properly calibrated and drops below 80% before those cycles are reached, Apple will replace it as defective.

Sounds good enuff, just kind of annoying to see the % drop :/
 
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