Revive the dead screwdriver and replace damaged Ni-Cd batteries to Li-ion

Someone threw away this screwdriver, I picked it up and decided to repair it for use. The inside of this screwdriver is quite new, just need to change the trigger and upgrade the battery. The end result is awesome :)
If need a new trigger (switch), you can refer to some product links below
https://s.click.aliexpress.com/e/_9RvhEm
https://s.click.aliexpress.com/e/_AlwSRM
https://s.click.aliexpress.com/e/_A0bGW6
https://s.click.aliexpress.com/e/_9xZuVs
....
Remember to check the dimension to choose a suitable one.
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Видео Revive the dead screwdriver and replace damaged Ni-Cd batteries to Li-ion канала bakidiy