How to make Super 20000 mAh Power Bank (120W) – DIY fast charge Power Bank
In this video, I show you how to make a power bank with multiple fast charging outputs using several batteries and a fast charging module.
To make this power bank, I have used 6 3.7V batteries, which have a total capacity of 20000 mAh. which can charge the phone several times.
You can use laptop battery to make this power bank
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