Restoration Of Stick Impact Driver Panasonic EZ7521 And Make A Lithium Battery From PVC Pipe For It 

I just found a Stick Impact Driver, it was made in China by Panasonic, model EZ7521 . The entire body of the device is rusted, stuck and it has no battery. In the video, the couple restored its functionality and made a battery for it from pvc pipes
* Rechargeable Stick Impact Driver Panasonic EZ7521 Technical Details *
- Brand Panasonic
- Model EZ7521
- Chuck: One-touch bit locking system (11.5mm and 13mm for the dimension up to the step)
- Max. torque: 25N-m
- Rotation speed: 0~2300 rpm
- Vibration triaxial composite value: 6.2m/s2
- Screw tightening capacity (approximate, when fully charged and LED is off):
+ Course threads, American pine (φ3.8 x 25mm): approx. 220
+ Wood screws, American pine (φ4.1 x 25mm): approx. 120
+ Textured screws, iron (φ4 x 13mm, plate thickness: 0.8mm): approx. 310
- Bolt tightening capacity (approximate, when fully charged and LED is off):
+Bolts (M8 x 25mm, plate thickness 10mm, normal bolts) = approx. 260 bolts
+Bolts (M6 x 25mm, plate thickness 10mm, high strength bolts) = approx. 190 bolts
- Battery pack: LA type, 7.2V/1.5Ah
I'm very happy to receive your feedback, advice, suggestions to improve myself.
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