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Saftey first
Saftey first
To open Laptop packs, you need only 4 items. 1 flat screwdriver, a decent wire cutter and for saftey and comfort a pair of gloves and glasses. I've seen guys using hammers, handsaws, chisels, ....Just start at the weak spot, where te pack makes electrical contact with the PC. Will a add a movie later. An ebike battery needs another approach and other tools but with patience you will open every treasure.
It's recommended for safety that once you start opening a battery pack you continue till the batteries are out of the enclosure. Even when your better half is calling for dinner....finish the job.
Srewdriver attack
Srewdriver attack
Look for the weakest point of the pack....where it connects with the notebook
Let's do the twist
Let's do the twist
Use a slotted screwdriver and twist it a few times to make loose the PVC around the connector.
The pack tries hard....
The pack tries hard....
Get your slotted screwdriver in the battery pack.
....but has to give up.
....but has to give up.
Push it open, be carefull not to touch the batteries.
May the force be with you
May the force be with you
Enjoy the noice is makes.
Open!
Open!
The pack is open. Remove plastic....time to recycle.
Wire cutter
Wire cutter
Use a decent wire cutter to remove the nickel. E-bike nickel is even thicker. Small pliers will break in the end.
Pliers time
Pliers time
For the positive side try to remove as much nickel as possible, with small pliers. This will make the welding much easier.
Positive site
Positive site
The positive side of the cell is more rigide then the negative side. If possible I try to remove the nickel. In the future it will precent shorts between the + and the enclosure and it make it easier to weld a glass fuses if you have a flat surface.
Negative side
Negative side
If possible I'll leave a piece of nickel strip attached to the cell. It's makes it easier to weld or solder to the cell. If you try to remove the nickel there's a chance you damage the cell and lithium will start leaking. If that happens by accident....throw it in the bin!
Sleeve
Sleeve
Sleeves can get damaged while opening the case or when you make a short between the + side and ground while seperating the cells. In that case you need to re-sleeve the cell. -->
Sleeve 2
Sleeve 2
Use a sharp cutter to remove the old sleeve. press firmly but not to hard so you don't damage the enclosure.
Sleeve 3
Sleeve 3
Slide the cell into the new sleeve. Generally the topinsulator (white ring) is in good condition.
Sleeve 4
Sleeve 4
Make sure the cell is in the middle of the sleeve. Time to switch on the heating gun and the cell will be wrapped and look like a new one.
Normally I re-sleeve the cells after capacity testing. No need to wasta a sleeve on a bad quality cell or a heater....
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