If I were to do it again I would make a wire tool with piano wire/guitar string/picture hanging wire and I like the idea of cutting down two dowels to make comfortable handles for pulling.. Or wear gloves. If you can get your hands comfortable it's not that hard. The only advantage of the plastic edge trimmer cord is that it is slippery nylon and non-conductive like wire. The glue is not nearly as bad as everyone said -- it is double-sided sticky tape on the Later 2012 model. - Also my laptop battery has 750 cycles and was 77-83% health. It was unpredictable when it got low on charge and I wanted a replaced battery for when I decide to sell my computer on eBay.. Now I have cycle count 0 and Battery Health 2 app version 1.4 shows 101% health and 8536 mAh maximum charge capable. This is a great replacement battery! The iFixIt battery was 59% charged after sitting in the box for 5 weeks after being delivered. I'm 99% sure these are unused OEM Apple batts removed from the top case part. Great deal!!!
To be clear about my comments above I went STRAIGHT FOR THE BATTERY. Just removed the bottom plate on the laptop and that's it. The only screws removed inside the laptop were the two battery screws and the only thing I unplugged was the battery connection in the center
More links: "Carpel-O-Peel" adhesive remover -- http://www.carpelvideoonline.com/carpel-...
I bought a gallon jug about 25 years ago -- still using it. Also saw it on Amazon
I used Carpel O Peel with the spudger to remove the old adhesive after battery removal.
Tilt the laptop so any adhesive remover flows to the bottom metal lip.
Using cold liquid from Dust-Off to make the battery adhesive brittle: http://www.youtube.com/watch?v=DPqrmt-Ic...
Using "String" or "Thread" to cut under the adhesive: (Two Parts)
I used monofilament -- very strong edge trimmer (Weed Wacker) cord. And wear gloves to make it easier on your hands.
I did it! I just replaced the battery pack on my MacBook Pro (Retina, Mid 2012) 15" and I looked at Youtube for help... One guy was using canned air (Dust-Off) with the can upside down so the cold liquid would get underneath the battery -- making the adhesive brittle, and then snap! The battery releases. http://www.youtube.com/watch?v=DPqrmt-Ic... Also another trick is instead of using the iFixit adhesive remover which I believe is acetone I used tried and true "Carpel-O-Peel" adhesive remover -- far less noxious. and worked even better at removing the residue AFTER I had removed the battery pack with a small narrow spatula/cake knife/putty knife. I also used the string method on a couple of batteries -- that works too especially with the cold dust-off liquid. Instead of string I found that edge trimmer cord (RYOBI 0.80" twisted bulk line from Home Depot AC04138 and AC04139) was even stronger but I had to get the battery started with a spatula to fit the monofilament underneath and around the battery.
It would be great is you could discuss the 3.6v cell - Lithium Type -- Size? Is it an 18650?
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