V2 - Build a 20000 vs 40000mAh Power Bank from 26650 Battery

How to Build a 20000 vs 40000mAh Power Bank from 26650 Battery at home - How To Make Mini Spot Welder i Using in video : https://www.seevid.ir/fa/w/tPuKu5J-_64 - Parts that you need - 26650 Battery 4000mah - Power bank module Thanks for watching, Have a great day !

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