Do-it-yourself 27.000mAh power bank in 1 minute! How to make a power bank yourself? Full instru... 

Case link ali.pub/386nyw
Link to batteries ali.pub/386o18
In this video: How to make a high-quality external Power Bank (power bank) from 18650 batteries yourself? Do-it-yourself power bank in 1 minute! Planned instruction with links.
#powerbank #powerbank # aliexpress