NiMH to Li-ion Chainsaw Restoration | Black&Decker CCS818-JP (Older Model) 

This product has been discontinued, I found this chainsaw from Japan recycle shop. I rebuilt a new lithium battery pack for replacing the original dead battery.
Black & Decker 18-Volt Cordless Electric Chainsaw:
- Weighs 6.2 lbs
- 18-volts
- 8" bar and chain
- Up to 150 1-1/2" cuts on a single charge
- 7" cut capacity
- On-board oiling with window to view oil level
- Cordless electric chain saw model# CCS818
- No load power 38W
Original Battery Pack
- Voltage 18V
- Capacity 1.5Ah
- Nimh battery (15 cells)
- No BMS
- Power 27WAh
New Battery Pack
- Voltage 18V - 21V
- Capacity 6Ah
- Lithium battery (10 cells)
- 21V Battery Management Board (BMS)
- Power 120WAh
The new battery can run this chainsaw for about 3 hours
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
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