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April 2010 Macbook Pro battery

E

eddiewouldgo92

macrumors newbie
Original poster
Apr 21, 2010
3
0
Hi, just bought my MBP a few days ago and was curious as to whether having the power charger in 24/7 will affect battery life, as it does in other batteries. I read that lithium batteries have 'no memory' and you should deplete the battery every 30 cycles but nothing really answered my question.:apple:
Cheers
 
Long term yes, short term no. It's not bad to have it in the charger for a day or two, but you'll want to unplug it and give it some exercise at least every couple days. Key to the life of these batteries is to keep them working, now working is either charging or depleting.
 
DesmoPilot said:
Long term yes, short term no. It's not bad to have it in the charger for a day or two, but you'll want to unplug it and give it some exercise at least every couple days. Key to the life of these batteries is to keep them working, now working is either charging or depleting.
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No, the key to longlife with Li -chemistry batteries is no full charge or deep discharge and no high temperatures.

This is based on reading the available literature and my personal experiences (Thinkpad T60, 2.5 years old, 217 cycles, 95% full charge capacity)
 
Azathoth said:
No, the key to longlife with Li -chemistry batteries is no full charge or deep discharge and no high temperatures.

This is based on reading the available literature and my personal experiences (Thinkpad T60, 2.5 years old, 217 cycles, 95% full charge capacity)
Click to expand...

So are you saying that you should never fully charge the laptop or keep it at full charge? Geez that gets annoying if you're sitting at a desk all day :(
 
sapporobaby said:
Annoying how?. Just unplug it. Problem solved.
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I am more saying that it is inconvenient to be worrying about power, rather than being able to plug in and not worry about the degradation of the battery, as I have heard that you do not have to worry about these things with lithium batteries....
 
eddiewouldgo92 said:
I am more saying that it is inconvenient to be worrying about power, rather than being able to plug in and not worry about the degradation of the battery, as I have heard that you do not have to worry about these things with lithium batteries....
Click to expand...

Correct. No worries. Just use it dude. It is all good. I have a 17 inch. I calibrated the battery and now I am all set.
 
eddiewouldgo92 said:
So are you saying that you should never fully charge the laptop or keep it at full charge? Geez that gets annoying if you're sitting at a desk all day :(
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My thinkpad comes with a little utility that lets you set the charge level of the battery - I have it charge to 80% and stop there - during normal 'desktop' use. I only charge it to 95% when I know I will be going mobile - otherwise the 80%-20% discharge gives me about 3 hours - which is enough for some in-couch surfing etc.
 
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