2nd-generation magnetic AC power adapter for MacBook products, first released in 2012. Not compatible with previous generation systems. Available in 45W and 85W.

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Mag Safe power adapter

I need to buy one of these for my 09 2.5 MBP

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13",15" or 17" model?

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Review this Apple T/N to ID your systems need: Find the right power adapter and cable for your Mac notebook

Ideally, order your charger from Apple or from an authorized reseller. There are a lot of bogus chargers which will hurt you and your system. Here's the Apple web site: MacBook power adapters

Here's a useful reference on giving your MagSafe & system the needed TLC: Apple Portables: Troubleshooting MagSafe adapters

Hopefully, these will sway you on why you don't want a fake charger:

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The MagSafe 2 85Watt Power Adapter is ONLY compatible with "slim" notebooks (MacBook Air, MacBook Pro Retina) circa 2013 and newer (excluding the 2015 MacBook and 2016 MBP)..

If you need an adapter for a 2009 MacBook Pro (which is a Unibody, non Retina model), you'll have to look for a Magsafe 1 adapter.

Do not purchase a used one, lots of self-appointed technicians are purchasing damages adapters and swapping cables with counterfeit parts. Probably not the best thing to say on iFixit, but I'd rather have a fully original adapter.

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There's an MagSafe adapter that you can get so you can share the older MagSafe adapter with the newer MagSafe 2 system.

Sadly, you can't run it the other way due to the voltage differences between the two systems:

- Original MagSafe runs at 16.5volts

- MagSafe 2 runs at 20 volts

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Dan, OP is looking for an adapter for a 2009 MacBook Pro. The Magsafe Converter you're talking about works with Retina MacBook Pros.

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@okami - Yes! That was my point the older units can run the new systems not the other way around. Your note I think added confusion which is why I posted the comment.

In the first link I posted is a listing of the adapters at the bottom are links to the Apple Store to buy what you need.

- Apple 60W MagSafe Power Adapter (for MacBook and 13-inch MacBook Pro)

- Apple 85W MagSafe Power Adapter (for 15- and 17-inch MacBook Pro)

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@Dan, I believe you were the only one who found my post confusing...

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Just google a YouTube video on how to open... I used electrical pliers and the supply popped open with NO damage at all to the case. It took about 2 mins to open 1 min to soldered the new cable in and 5 mins to put the case back together correctly and super glue and clamp the case for drying. The soldering is easy if you have basic experience. Suggest testing before you glue up... but really this is hard to mess up and it will work and look like brand new for a fraction of the price of a new power supply.

My experience is that it is the cable ends that go first. Right at the mag safe or where it enters the power supply. The replacement cable can be purchased for $6. For that price, it is worth the effort to repair.

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I don't recommend replacing the cord as they are often from counterfeit chargers (they cut the cords to prevent there resale). The other issue is the MagSafe connector on the cord ID's the charger to the system so you have only a 30% chance on getting the correct one for your charger.

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I have no idea what you are talking about, but I can tell you that I have replace at least 3-4 over the last 5 years. The cords are brand new from eBay/ China ... they have been perfect replacements. Sorry you have had a

poor experience.

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Take a read of this: Teardown and Exploration of MagSafe connector.

I also need to worry about the safety risks of altering the unit. I know of someone who was sued as the person's charger came apart and they stupidly tried putting the charger out of the wall outlet by grabbing the exposed parts getting there fingers badly burnt. Here in the States I swear people don't use their heads! As an example: The McDonald’s Hot Coffee Case.

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Apple does not sell original parts to anyone except Service Providers, and they are not authorised to resell. As a (now freelance, previously working at an AASP) certified technician I know it from direct experience.

The replacement cables are not even sourced from the original manufacturer. Lots of users report a certain stiffness of the plastic cord that means that replacements are counterfeit items. The cable is not a complicated part per se (just to wires and the MagSafe connector), but the quality of copper used can vary a lot. Personally, I would find it worrisome to entrust my MacBook Pro's battery health to a counterfeit part.

Also, Chinese resellers apparently do not differentiate between 45, 60 and 85 Watt connectors. But your computer does...

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They are so easy to fix - providing you are prepared to attack the casing with a hack saw! Yes, it is glued shut!!

The faults I have encountered is with the startup and output caps. When replacing, make sure the caps are rated at 105 deg C.

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Getting it open without damaging the innards is the first difficult part, the second is sealing it tightly after you've repaired it. This is by far the riskiest part! If the person hurts them selves or the charger starts a fire you open your self to legal risk! Today is our very legalist society its more likely to happen.

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Getting it open is easy if you are competant. I have NEVER sawed anywhere near components - the only thing that you are likely to hit is the heatsink.

I have never sealed them after repair - white insulting tape in the correct places is enough.

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