Is it safe to use an old 60W Magsafe power supply with a new 15" Macbook Pro (which comes with an 85W one)? Will it just charge more slowly rather than, say, frying the power supply?
-- Richard
On 8 July, 18:55, rich...@redacted.invalid (Richard Tobin) wrote:
Is it safe to use an old 60W Magsafe power supply with a new 15" Macbook Pro (which comes with an 85W one)? Will it just charge more slowly rather than, say, frying the power supply?
-- Richard
-- Please remember to mention me / in tapes you leave behind.
Yes, and no. Works fine, charges slowly.
On 8 Jul 2009 17:55:30 GMT, richard@redacted.invalid (Richard Tobin) wrote:
Is it safe to use an old 60W Magsafe power supply with a new 15" Macbook Pro (which comes with an 85W one)? Will it just charge more slowly rather than, say, frying the power supply?
It'll trip out if the MBP asks more power than it can supply.
I did this with an Air 45W psu and a MacBook, normally 60W. I was reinstalling the MB, and the Air psu kept it going all the way until Spotlight indexing started on first login. At that point the Air psu gave up and the overpower trip went.
Took the psu ten minutes to reset and carry on working, no obvious harm done. I've used it for more than a year since then.
Cheers - Jaimie
Ric Harris infobubble@redacted.invalid wrote:
On 8 July, 18:55, rich...@redacted.invalid (Richard Tobin) wrote:
Is it safe to use an old 60W Magsafe power supply with a new 15" Macbook Pro (which comes with an 85W one)? Will it just charge more slowly rather than, say, frying the power supply?
Yes, and no. Works fine, charges slowly.
I've observed a situation where this combination wouldn't charge the battery while the computer was operating. It knows the adapater doesn't have sufficient power. You had to shut down or sleep the computer to charge the battery.
Incidentally, the 60W Magsafe adapter isn't "old". It is supplied with all 13" MacBook and MacBook Pro models. The 15" and 17" MacBook Pro models have always come with 85W adapters, but they started out bigger than the 60W one and got smaller in mid to late 2007 (about two weeks after I bought my spare one, of course).
In article 1j2lctj.1v9ftci9qzd1gN%dempson@redacted.invalid, David Empson dempson@redacted.invalid wrote:
Incidentally, the 60W Magsafe adapter isn't "old".
I just meant "old' in the sense of one I already had.
-- Richard
Richard Tobin richard@redacted.invalid wrote:
Is it safe to use an old 60W Magsafe power supply with a new 15" Macbook Pro (which comes with an 85W one)? Will it just charge more slowly rather than, say, frying the power supply?
Hannah and I (MacBook and MacBook Pro) just pick up whichever power supply is closest. No issues.
-z-
David Empson dempson@redacted.invalid wrote:
Ric Harris infobubble@redacted.invalid wrote:
On 8 July, 18:55, rich...@redacted.invalid (Richard Tobin) wrote:
Is it safe to use an old 60W Magsafe power supply with a new 15" Macbook Pro (which comes with an 85W one)? Will it just charge more slowly rather than, say, frying the power supply?
Yes, and no. Works fine, charges slowly.
I've observed a situation where this combination wouldn't charge the battery while the computer was operating. It knows the adapater doesn't have sufficient power. You had to shut down or sleep the computer to charge the battery.
I've seen that too.
-zoara-
On 2009-07-09, zoara me18@redacted.invalid wrote:
Richard Tobin richard@redacted.invalid wrote:
Is it safe to use an old 60W Magsafe power supply with a new 15" Macbook Pro (which comes with an 85W one)? Will it just charge more slowly rather than, say, frying the power supply?
Hannah and I (MacBook and MacBook Pro) just pick up whichever power supply is closest. No issues.
I have problems with any sentence you write containing the words 'MacBook' and 'no issues'.
Jim
Jim jim@redacted.invalid wrote:
On 2009-07-09, zoara me18@redacted.invalid wrote:
Richard Tobin richard@redacted.invalid wrote:
Is it safe to use an old 60W Magsafe power supply with a new 15" Macbook Pro (which comes with an 85W one)? Will it just charge more slowly rather than, say, frying the power supply?
Hannah and I (MacBook and MacBook Pro) just pick up whichever power supply is closest. No issues.
I have problems with any sentence you write containing the words 'MacBook' and 'no issues'.
Good job it was two sentences then.
Cheers,
On 2009-07-09, James Dore james.dore@redacted.invalid wrote:
Hannah and I (MacBook and MacBook Pro) just pick up whichever power supply is closest. No issues.
I have problems with any sentence you write containing the words 'MacBook' and 'no issues'.
Good job it was two sentences then.
Grrrr. But fair point.
Jim
In article h32mii$1ru4$1@redacted.invalidrichard@redacted.invalid (Richard Tobin) wrote:
Is it safe to use an old 60W Magsafe power supply with a new 15" Macbook Pro (which comes with an 85W one)? Will it just charge more slowly rather than, say, frying the power supply?
You won't fry the supply. I'm fairly sure you won't even blow the fuse. I've plugged one in by accident myself and didn't notice for a few hours.
It will, as you suggest, charge more slowly. So much more slowly that if you're using a lot of power (playing a real-time 3D game) it may still have a net discharge.
Jim jim@redacted.invalid wrote:
On 2009-07-09, zoara me18@redacted.invalid wrote:
Richard Tobin richard@redacted.invalid wrote:
Is it safe to use an old 60W Magsafe power supply with a new 15" Macbook Pro (which comes with an 85W one)? Will it just charge more slowly rather than, say, frying the power supply?
Hannah and I (MacBook and MacBook Pro) just pick up whichever power supply is closest. No issues.
I have problems with any sentence you write containing the words 'MacBook' and 'no issues'.
Hur. Point taken.
-z-
Jim jim@redacted.invalid wrote:
On 2009-07-09, zoara me18@redacted.invalid wrote:
Richard Tobin richard@redacted.invalid wrote:
Is it safe to use an old 60W Magsafe power supply with a new 15" Macbook Pro (which comes with an 85W one)? Will it just charge more slowly rather than, say, frying the power supply?
Hannah and I (MacBook and MacBook Pro) just pick up whichever power supply is closest. No issues.
I have problems with any sentence you write containing the words 'MacBook' and 'no issues'.
Jim
well at least he didn't say ibook...
roger
Jaimie Vandenbergh jaimie@redacted.invalid wrote:
On 8 Jul 2009 17:55:30 GMT, richard@redacted.invalid (Richard Tobin) wrote:
Is it safe to use an old 60W Magsafe power supply with a new 15" Macbook Pro (which comes with an 85W one)? Will it just charge more slowly rather than, say, frying the power supply?
It'll trip out if the MBP asks more power than it can supply.
I did this with an Air 45W psu and a MacBook, normally 60W. I was reinstalling the MB, and the Air psu kept it going all the way until Spotlight indexing started on first login. At that point the Air psu gave up and the overpower trip went.
Took the psu ten minutes to reset and carry on working, no obvious harm done. I've used it for more than a year since then.
Cheers - Jaimie
I used to end up buying the higher spec powersupplys for my old 12inch powerbook as it would over heat and trip out the correct ones, at least if working hard anyway.
roger
On 2009-07-10, Roger Merriman NEWS@redacted.invalid wrote:
Hannah and I (MacBook and MacBook Pro) just pick up whichever power supply is closest. No issues.
I have problems with any sentence you write containing the words 'MacBook' and 'no issues'.
Jim
well at least he didn't say ibook...
Heh. Good point.
Jim
On Fri, 10 Jul 2009 10:13:09 +0100, NEWS@redacted.invalid (Roger Merriman) wrote:
Jaimie Vandenbergh jaimie@redacted.invalid wrote:
On 8 Jul 2009 17:55:30 GMT, richard@redacted.invalid (Richard Tobin) wrote:
Is it safe to use an old 60W Magsafe power supply with a new 15" Macbook Pro (which comes with an 85W one)? Will it just charge more slowly rather than, say, frying the power supply?
It'll trip out if the MBP asks more power than it can supply.
I did this with an Air 45W psu and a MacBook, normally 60W. I was reinstalling the MB, and the Air psu kept it going all the way until Spotlight indexing started on first login. At that point the Air psu gave up and the overpower trip went.
Took the psu ten minutes to reset and carry on working, no obvious harm done. I've used it for more than a year since then.
I used to end up buying the higher spec powersupplys for my old 12inch powerbook as it would over heat and trip out the correct ones, at least if working hard anyway.
Coo. Mine never did that. Still doesn't, according to my sister.
Cheers - Jaimie
Jaimie Vandenbergh jaimie@redacted.invalid wrote:
On Fri, 10 Jul 2009 10:13:09 +0100, NEWS@redacted.invalid (Roger Merriman) wrote:
Jaimie Vandenbergh jaimie@redacted.invalid wrote:
On 8 Jul 2009 17:55:30 GMT, richard@redacted.invalid (Richard Tobin) wrote:
Is it safe to use an old 60W Magsafe power supply with a new 15" Macbook Pro (which comes with an 85W one)? Will it just charge more slowly rather than, say, frying the power supply?
It'll trip out if the MBP asks more power than it can supply.
I did this with an Air 45W psu and a MacBook, normally 60W. I was reinstalling the MB, and the Air psu kept it going all the way until Spotlight indexing started on first login. At that point the Air psu gave up and the overpower trip went.
Took the psu ten minutes to reset and carry on working, no obvious harm done. I've used it for more than a year since then.
I used to end up buying the higher spec powersupplys for my old 12inch powerbook as it would over heat and trip out the correct ones, at least if working hard anyway.
Coo. Mine never did that. Still doesn't, according to my sister.
Cheers - Jaimie
mostly playing games for a few hours that would do it, you'd notice when either you'd hear the bleep of battery out of juce or when it just went to sleep though once given some power it wouldn't crash just carry on, with killing zerg or what ever.
roger
On Fri, 10 Jul 2009 10:36:05 +0100, NEWS@redacted.invalid (Roger Merriman) wrote:
Jaimie Vandenbergh jaimie@redacted.invalid wrote:
On Fri, 10 Jul 2009 10:13:09 +0100, NEWS@redacted.invalid (Roger Merriman) wrote:
I used to end up buying the higher spec powersupplys for my old 12inch powerbook as it would over heat and trip out the correct ones, at least if working hard anyway.
Coo. Mine never did that. Still doesn't, according to my sister.
Cheers - Jaimiemostly playing games for a few hours that would do it, you'd notice when either you'd hear the bleep of battery out of juce or when it just went to sleep though once given some power it wouldn't crash just carry on, with killing zerg or what ever.
That would do it - I rarely played games for a great length of time on it, though I did knock off quite a lot of Stubbs the Zombie.
Cheers - Jaimie
On 2009-07-10, Gwynne Harper g.harper@redacted.invalid wrote:
Jim jim@redacted.invalid wrote:
I have problems with any sentence you write containing the words 'MacBook' and 'no issues'.
Does that include running them the other way around (ie 85W on a 60W machine)?
I'm almost completely sure you meant to reply to someone else.
Jim
Jim jim@redacted.invalid wrote:
I have problems with any sentence you write containing the words 'MacBook' and 'no issues'.
Does that include running them the other way around (ie 85W on a 60W machine)?
Gwynne
Jim jim@redacted.invalid wrote:
Does that include running them the other way around (ie 85W on a 60W machine)?
I'm almost completely sure you meant to reply to someone else.
I think you're right, however I'm an equal opportunities replier.
Gwynne
Gwynne Harper g.harper@redacted.invalid wrote:
Jim jim@redacted.invalid wrote:
I have problems with any sentence you write containing the words 'MacBook' and 'no issues'.
Does that include running them the other way around (ie 85W on a 60W machine)?
Yep.
Though the caveat already mentioned about my luck with Macs does apply...
-zoara-
zoara me18@redacted.invalid wrote:
Though the caveat already mentioned about my luck with Macs does apply...
Goodo - I did it a few times without even thinking about it, then thought the better of it until such foolhardiness passed the UCSM litmus test.
Moving house next week - wish me luck...
Gwynne