40955 Views 6 Replies Latest reply: Dec 30, 2008 1:15 PM by maclover009
I sorta have the opposite question.
A friend and I both have Late 2008 Macbooks - but I have the Pro. I was using his 60W charger with no problems, except it was a little slow to charge - but I just needed a little top up.
I then switched to Vista to play Crysis and after about 30 minutes, between levels there was some silence and I heard a strange squeaking noise coming from the 60W adapter.
Needless to say I immediately unplugged it.
This then led to an interesting series of tests where we established that that on a scale of lots of noise to no noise, the 60W adapter behaved as follows:
Vista on MBP (Lots of noise)
Mac OS X on MBP (Some noise)
Vista on MB (less noise)
Mac OS X on MB (no noise)
This is a little disturbing... For now I will only be using 85W adapters with my MBP, but what about vista on his MB? Could he fry his adapter?
Yes Kappy is right... The original question asks if it okay to use the 85w adapter on the MB. That is okay because the MacBook can regulate the intake of power.
On the other hand, using the 60w on the MBP is NOT okay. The MacBook Pro tries to take more power then the 60w can provide and it is like putting to many things on a household circut. It will blow a fuse. But in this case it will overheat the 60w power adapter causing it to burn out.
The best thing to do really is to use the provided power adapters for each computer. If you are in a sticky situation it is acceptable to use the 85w on the MacBook but never the 60w on the Pro.
And lastly the 85w power adapter will not charge the MB any more because the MacBook regulates the voltage intake and its MagSafe board will not take any more voltage then the 60w power adapter can provide.