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Magsafe2 runs at a higher voltage than Magsafe, so I don't think Apple will make one.


That's simply not true. I have two MBA power supplies. Both are 45w, but one had magsafe and the other magsafe 2. I'd love to be able to use the newer one as a backup, but can't without a magsafe 2 to magsafe adapter.
 
Magsafe 2 runs at 20v; magsafe runs at 16.5v (and the macbook air magsafe actually ran at 14.5v).
Hey everyone, am looking for a way to charge my magsafe 1 macbook pro late 2011 with a powerbank, without using the huge stock cable, any powerbank or magsafe1 adapter or cable that will work.
would really appreciate help
 
Hey, sorry, I know, we should let old thread die, but I thought my piece of information might be useful to somebody else.
I had a MagSafe 2 85W with a bad cable. I was in need of a MagSafe 85W to test a computer. I had a MagSafe cable (working) lying around.
I tried soldering it to the MagSafe 2 brick.
It doesn’t work.
It’s not the cable, the cable works. I put it on another MagSafe brick, it’s fine.
I put a MagSafe 2 cable on the MagSafe 2 brick, it works.
The MagSafe 2 85W brick will not accept a MagSafe 1 cable.
Or at least that’s my experience with it.
I also tested it with the older version of the MagSafe 1 cable, the T-shaped one (yes, the one before the L shaped MagSafe 1), same thing, doesn’t work.

that said, might be a limitation specific to the 85W power bricks.
But unfortunately that’s the one I needed and the 60W and 45W MagSafe 2 I have lying around are already repaired and I don’t really want to desolder everything just for the test.

but yeah, as someone was asking about that, I thought I might provide my answer based on my recent experience about it.

too bad about the absence of MagSafe 2 to MagSafe 1 converter. I’ll be selling my last MagSafe 2 device soon and I’ll have no way to test my chargers once I’ve repaired them. That sucks.

somebody in France tried grinding a MagSafe 1 to MagSafe 2 converter to revert it and pretends it works. I’m sure it does but I’m doubtful about it working on the 85W power supply. I might try it.
 
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I tried soldering it to the MagSafe 2 brick. It doesn’t work.
If there's no difference in voltages, then it's a bit strange you got such a problem. As far as I know, Macbook does the communication with a chip hidden inside Magsafe 1 plug before it starts to charge (and Chinese successfully hacked this and sold a lot of cheap "replica Magsafe 1" plugs on AliExpress and similar sites). But there shouldn't be any communication between a brick and a plug itself, if I'm correct. Did you check that the voltages are correct and everything soldered properly, so that a current is successfully reaching a charger's plug?
 
No, i must say I didn’t check the voltage as I didn’t have my multimeter at that moment (my old one broke down and I hadn’t received my new one yet), but I was really sure of my soldering work and of my cable. Like I said, the cable was working on another adapter. I tried two different MagSafe one cables. That’s me soldering it twice on the brick. (Of course, I paid attention to the polarity)
When I saw it wasn’t working, I tried both cables on MagSafe one bricks. Both were working.
I took a MagSafe 2 cable and soldered it on the brick. It worked.
I desoldered it. I tried one of the MagSafe one again.
Didn’t work.
I soldered the MagSafe 2 back it.
It worked.
The MagSafe one (not working one the brick) went back to a MagSafe one brick. It worked.
I’m pretty sure there some kind of weird thing going on.
I’ll be buying some new MagSafe 2 cable soon but right now the supplier I use doesn’t ship to France anymore because of corona.
I might try the grinding thing, though.
 
I think that we have some 15 of the bricks with probably nine Magsafe 1 and the rest Magsafe 2 and probably about five adapters. About half of these are sitting in storage. I bought extra power bricks so that I didn't have to carry them around with me between home and office and we've gone through a decent number of these things over the years.

I would guess that you could find these easily on the used market.
 
Oh, that’s usually not hard to find. Cheap cables are hard to come by though. I’m not paying 8$ for a cable when I’m selling the brick 25$ after a good 45 minutes of work on it. Most I’ll go for is around 4,50. (And obviously I tell the buyer the cable has been changed ^^)
the point is to repair broken bricks, not to stock pile them.
that case here was a particular one because I needed it for my own computer. I ended up buying a used one on eBay.
But now I’m curious and I want to investigate that thing. It’s weird.
 
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