Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: Hi! I can use this charger in my macbook pro 15" where the charger is 85w Model A122?
Document: This is an original 15&#34; or 17&#34; 85W power cord. Ours came in a sealed Apple power cord box. I ordered another (Apple) charger on Amazon and it came in a ziploc with no packaging and didn't charge my 15&#34; MacBook Pro but this is great. It's worth the extra to get an original.
Great price for an Apple 15" Powerbook 85w charger. Same product from the Apple Store but something like $30 cheaper. Hard to argue.
If you want the piece of mind knowing you are buying from Apple and getting 100% legit product - just click buy. I also think my 15&#34; Macbook Pro is running longer battery-wise now that I'm using the right cord - I'd been using a weaker Macbook cord prior.
The original adapter for my late 2007 Macbook Pro finally gave out a few weeks back. I didn't trust using a knock off adapter, so this was my only option. I did a fair bit of research, unsure if this would work with my older model. Fortunately, it does. Some people have complained of receiving fake adapters. I ordered direct from Amazon so had no doubts it would be authentic and it is.
I bought a cheaper model earlier and wasted my money. It became too hot to use. Learned my lesson and now staywith the proven winner.
I'm an enormous fan of my MacBook Pro, really I am. But the power adaptor is its Achilles heel. It gets very hot in ordinary use and after a year or so, the rubber at its connector starts to disintegrate and expose the wires. It's not as prone to fraying as the old head-in adapter, but it's still a disaster. Trust me, I'm on my third of these so far.
I can't return this thing and it won't even work only my MacBook Pro. I guess this was made for the older computers. I got a redesigned MacBook Pro last Dec/2013 and it doesn't even work. I bought this 45 days ago and just now used it. I hit the return product button and of course amazon has a limit on when you can't return something you can't even use. This is crap and I hope they fix this!!! They really need to write better reviews!
I got my Macbook earlier this year. Over time, the cable frayed, to the point that I was worried that it was too dangerous to use much longer. So I had to order another one, and it's ridiculous to me how much it cost. Considering how poorly made they are, I am bothered by having to pay this much for a charger.I do appreciate the MagSafe connector, as it's prevented my clumsy self from destroying an expensive investment quickly after purchasing it.
It's been in daily use for one month now and there have been no problems. The cord from the transformer to the computer seems a little skinnier than the original that came with my MacBook Pro 17 inch so I'm babying it to ensure it doesn't have undue strain that caused my first one to split. That one still works as my backup thanks to some strategically placed strips of duct tape. If you're looking at the cheaper units, forget it, you get what you pay for.
Gets the job done well..there's noting different about this charger and the original MacBook Pro charger. I was happy that nothing was different about this charger
Answer: This is the largest of the available chargers and will work properly on all MAGSAFE MacBooks, those that do NOT have the newer MAGSAFE II connector. "Newer" is after mid-2012 when the Retina and MagSafe 2 connector was introduced. It also has Thunderbolt connector(s). You should NOT use smaller adapters on larger MacBooks, because they won't properly charge and will damage the battery over time.