15 Year Old Impact Driver Restoration | Hitachi Cordless Oil Pulse Driver, Model WP 12DM

I bought this impact driver only 15$ cause it looks very old and the battery also dead. There is some water inside the box I think I couldn't get it back to work. Incidentally, I picked up another battery at good condition. The seller gave it to me for free. Finally, I can get this impact driver back to life. This tool is really powerful and greatly reduces striking noise. At the end of the video, you will see the drill testing and comparing.
About Impact Driver
MODEL WP 12DM
Hitachi Cordless Oil Pulse Driver, Model WP 12DM
Voltage: DC 12V
Capacity: 3.0 Ah
Weight 1.9 kg (4.2 lbs.) (Includes battery)*1
Impact rate 0 --- 1,500/min
Type of switch Trigger switch with forward/reverse changeover pushing button (with brake)
Created: Mar 2004
I hope you find something useful & enjoy this video!
I am happy to receive your feedback, advice, suggestions to improve myself.
!!! I apologize for the mistake if I have made in this restoration !!!
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