Infinite Expendable Capacity Power Bank

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This DIY power bank features a removable battery pack, which can be easily replaced, giving this power bank unlimited capacity as long as you have enough cells. The cost of the row components of this power bank is around 60 dollars, which is two times cheaper than anything commercially equivalent.
WARNING: Do everything at your own risk, lithium batteries can catch fire or explode if mishandled. This power bank requires a more than a basic understanding of electronic to complete.
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Credits:
K R A L Y N 3D
/ @kralyn3d
Music:
Title: Cold Sun
Artist: Del
Genre: Dance & Electronic
Mood: Calm
Download: goo.gl/FvYr42
Curated by Maker Pro Project Spotlight cool electronic projects done by makers around the world. All rights to respective owner of music & video footage.

[@widjisantoso3074]

This just exactly like what KRALYN 3D make