Mbp Ac

hi, i'm a kind of new, and i just want to know if i can disconnect my batery to keep my mbp just connected to the AC.. is this possible? am i going to burn something up? hahahaha


pd: i don't handle english very well so sorry by the mistakes .. i'm from southamerica -.-

 

you sure can.

 

thank you!

 

Wouldn't really suggest doing that. If your magsafe gets disconnected, your computer shuts off. Immediatly. And thats a very bad thing to have happen.

I'd recommend keeping the battery connected. It won't hurt anything.

 

isn't that going to overcycle it? i'm using my macbook pro as a desktop right now..

 

I don't know if it will "overcycle", I think it just stops charging but there are some who thinks it will shorten the longevity of your battery keeping it in there and plugged in at the same time. You can operate your mBp without the battery while plugged in but like hollownail said if your magsafe gets disconnected you will lose whatever work you were doing. Similarly if you have a power outage.

 

anyone else?

 

Keeping it pluged in with the battery at full charge shouldn't have much of an effect on the battery. What is more damaging is only partially discharging the battery and recharging.
It should be plugged in only when the battery is at full charge or about empty.

 

If you're looking for some concrete knowledge about battery cycling, check out http://www.batteryuniversity.com/

It seems very well done and trustworthy, and offers some excellent advice about how to take care of rechargable batteries.

 

this is completely untrue from everything I've read about the Li-Ion batteries that are used in notebooks. I've heard it's much worse to discharge fully (as in totally run out). There's no harm in going down to a few percent of charge left, nor is it bad to only discharge about 50%.

Just to take something from that "battery university" website above, this table has some useful information.

http://www.batteryuniversity.com/partone-23.htm

 

Discharging it 100% is damaging. But only draining the battery by 10 or 20% then recharging it is more damaging. This is what I've heard a lot, plus what I've experimented and seen happen at my old rescue squad. Our pagers and radios that were only off the charger for 4-8 hours only lasted a bit over a year. The ones that we discharged to about 10-20% and then only recharged lasted over 2 years.

When I mean last, I don't mean that they stopped working, but that they hold noticeably less charge.

 

ok.. so what do you recommend me to do?

 

What sorts of batteries were those? That sounds like NiCads or NiMhs.

 

The real problem comes not from overcharging your battery, but realizing that you are keeping it next to something hot (CPU & GPU) when using it as a desktop replacement. This can affect battery life if done excessively for hours on end over an extended period of time.

Best piece of advice is if you know you are going to keep to laptop on your desk for a while, take out the battery. And also, make sure that you put the AC adapter in a safe place. MagSafe will work against you in this case, since your AC adapter is going to release from the jack much easier than normal laptops.