DIY 48V 50Ah Electric Bike Battery pack from old laptop battery II Low cost II

Hi friends today I am going to show how to make 48v battery pack from scrap laptop battery.
Here I collect li-ion batteries from scrap laptop battery pack some cells in the batteries are dead but almost of them are good cells inside.

Before use It is better to test the current of the cells by a balance charger,

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Thank you for watching .

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