Start by removing the 6 3 mm Y00 screws from the top side of the battery

Flip the battery over and continue by removing the screws from the bottom side of the battery:

Remove the 5 3 mm Y00 Screws.

Remove the 1 2 mm Y00 Screw

With the help of a plastic opening tool remove the plastic cover on the right side of the battery.

Insert the plastic opening tool in-between the aluminium casing and the plastic cover and pry it straight away from the casing.

Continue by removing the plastic cover on the other side of the battery.

Insert a plastic opening pick in-between the aluminium casing and the plastic cover and pry the plastic cover out of the battery by bending the opening pick upwards.

With the plastic covers removed it's now time to get the battery pack out of its casing. However there is still one plastic piece glued to the aluminum casing which we have to remove first.

Insert a metal spudger in-between the plastic piece and the aluminium casing on the left side.

Work your way across the entire edge of the battery to free the plastic bracket from the aluminium casing.

With the plastic bracket free from the aluminium casing we can now remove the battery pack from the aluminium casing.

Push the plastic inside of the battery from the non-circuitboard side into the direction of the circuitboard side.

The plastic bracket may drop out of the battery pack when removing the pack from the casing.

The pack is now fully disassembled.