In this video I'll show you how to get free 18650 li ion batteries from dead and old laptop battery.

I test 18650 batteries using litokala smart charger if you don't have one.
You can use tp4056 module to charge and Zb2l3 to measure capacity.

tp4056 - https://amzn.to/3sMyqd4
zb2l3 - https://amzn.to/34P4e91


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