MBP Charger - ok to leave plugged in and on??

BadboyHouse

macrumors 6502
Original poster
Nov 1, 2011
258
0
Quick question - when I'm streaming music to my stereo from my MBP I leave the charger connected to the MBP and switched on (I might stream for a good few hours).

I presume that when the battery is full it wont cause any probs leaving the charger on and connected?

I think read somewhere that the MacBook charger will effectively switch off charging?
 

GGJstudios

macrumors Westmere
May 16, 2008
44,427
762
Quick question - when I'm streaming music to my stereo from my MBP I leave the charger connected to the MBP and switched on (I might stream for a good few hours).

I presume that when the battery is full it wont cause any probs leaving the charger on and connected?

I think read somewhere that the MacBook charger will effectively switch off charging?
Your battery will not continue to charge once it's full, even if you leave it plugged in. This should answer most, if not all, of your battery questions:
 

BadboyHouse

macrumors 6502
Original poster
Nov 1, 2011
258
0
Cheers.

I sort of thought that would be the case anyway after I noticed the charger was cold when I unplugged it earlier - and it's been plugged in and on most of the day.
 

lexdiamonnyc

macrumors regular
Feb 29, 2012
110
13
NYC
I remember reading somewhere that it's ok to leave it plugged in and on all the time, just let it run down below 50% every few days to 'exercise' the battery........don't know if it really makes any difference but so far so good....:cool:
 

theBostonian

Suspended
Apr 15, 2012
317
238
I remember reading somewhere that it's ok to leave it plugged in and on all the time, just let it run down below 50% every few days to 'exercise' the battery........don't know if it really makes any difference but so far so good....:cool:
I'm not convinced it does make any difference. I leave my computer plugged in all the time, I've gone through 10 cycles (after 15 months) and my battery health is still 100%, the battery can hold a charge of 69190 mWh (this tends to fluctuate too).

So... Seems a lot of the battery voodoo is just hokum.
 

sweetbrat

macrumors 65816
Jun 17, 2009
1,443
1
Redford, MI
I'm not convinced it does make any difference. I leave my computer plugged in all the time, I've gone through 10 cycles (after 15 months) and my battery health is still 100%, the battery can hold a charge of 69190 mWh (this tends to fluctuate too).

So... Seems a lot of the battery voodoo is just hokum.
It does make a difference in the long run. The battery in your MBP needs to be used from time to time. That's why Apple recommends exercising the battery occasionally, even if you leave it plugged in most of the time.

OP, they way you're using it won't be a problem. Your battery won't overcharge. Just unplug it and let it run from the battery from time to time and you'll be fine.
 

mfuchs88

macrumors 6502
Nov 26, 2011
300
0
Yes, it's completely fine, as long as you unplug it every once in awhile to use it on battery, maybe say once a month or so.
 

user418

macrumors 6502a
Aug 22, 2010
668
12
I leave my MBP plugged in all the time. It's 6 months old and has 3 battery cycles. I have no issues to report with my battery. After reading the info referenced by GGJ in his post above I'm fine with leaving it plugged in all the time and draining it every other month or so.
 

Donka

macrumors 68030
May 3, 2011
2,771
1,396
Scotland
The battery will last longer providing you allow it to discharge and recharge periodically. I have two identical work machines, one is only ever used on a docking station and always powered and the other is used on the move and from home. The one always on the docking station has a maximum of around 10 mins of battery life whereas the one used on the go and from home still gets around 2 hours of battery use.
 
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