How to make Super 4,000 mAh Power Bank (25W) - DIY fast charge Power Bank

How to make Super 4,000 mAh Power Bank (25W) - 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 2 3.7V batteries, which have a total capacity of 4000 mAh, which can charge the phone several times. You can use laptop battery to make this power bank. Business email officialctkexperiment@gmail.com #power_bank #battery #DIY #Howto #fast_charge # ctk experiment #Penguin #how_to_make_a_PowerBank