Power Cutter Restoration

I find this tool from Japan recycle shop for $25. I think this mini circular saw is using for wood cutting, but after I open the blade cover, I realize that it cuts metal also. It needs a high discharge battery to start the motor.

Power Cutter Tool
- Brand National (Panasonic)
- Model EZ 3500
- DC 12V 20A 3400 rpm

Original Battery Pack
- 12 Nimh battery cells
- Voltage 12V 3Ah

New Battery Pack
- 6 lithium battery cells 3.7V 3000mAh
- Voltage 12.6V 6Ah

Lithium-ion battery cell
- Brand model: LG INR18650HG2
- Standard capacity: 2800- 3000mAh
- Rated voltage: 3.6V
- Charging voltage: 4.2±0.05V
- Maximum continuous discharge current: 20A
- Discharge cut-off voltage: 2.5V
- Weight: Max.47.0g
- Size: Max.18.2×65.2 mm
- Charge and discharge times: 500 times

BMS 4S40A
- 4S 16.8V 40A lithium battery protection board (comes with AUTO recovery function)
- Can use with 3.7V lithium battery
- Charging voltage: 16.8V-18.1V
- Continuous discharge current (upper limit): 40A
- Continuous charging current (upper limit): 20A

I hope you find this video useful and enjoy it!
I am happy to receive feedback, suggestions to improve myself.
!!! I'm sorry for the mistake if I did in this video !!!
*** I still keep some parts, I want to help the world environment ***
Thank you very much for your likes, comments, and subscription!
Have a nice day
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Видео Power Cutter Restoration канала Gear Show