In this video I replace the cells in an old Dewalt 14.4v battery with new Ni-Cd battery cells. If you replace cells, you should use the same size and power as the original if you want to use the original charger. I used batteries that are 43mm by 23mm, 1.2v and 2000mAh (2Ah).
Do anything you see in this video at your own risk.
Here are the cells I used:
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Website:
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Instagram:
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