In this video I will show you the ultimate solution to power on the go. 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.

Schematics and the script: https://drive.google.com/drive/folder...
3D print and CAD files: https://grabcad.com/kralyn.3d1/models
If you need a 3D printer, here is a really good one for only $220(Ender 3):
https://amzn.to/30QC9rj

If you like to see behind the scenes stuff support my channel, get frequent project updates, or chat with me, please consider joining my Patreon:   / kralyn3d  

Part links: (some are affiliate)
15x 18650 battery, if you are going to buy new, I recommend these:
https://www.alibaba.com/productdetai...
Or NCR18650B/BD https://www.alibaba.com/productdetai...
USB 12V quick charge:
eBay:https://www.ebay.com/itm/USBFastQui...
Amazon: https://amzn.to/2KbJoE5
200W boost converter:
eBay:https://www.ebay.com/itm/200WDCDCB...
Amazon: https://amzn.to/2KdpvfW
12V Inverter 110V:
ebay:https://www.ebay.com/itm/150WPowerI...
Amazon: https://amzn.to/2Wdduyy
12V inverter 220V: You might need to modify the io shield to fit the socket your country needs.
https://www.ebay.com/itm/150W31ADu...
Wireless charging circuit:
eBay:https://www.ebay.com/itm/PracticalDI...
Amazon: https://amzn.to/2WAC9w2
DCDC step down constant current:
eBay:https://www.ebay.com/itm/DCStepDown...
Amazon: https://amzn.to/2WfV93R
Mini DC step down:
eBay:https://www.ebay.com/itm/2pcsMini360...
Amazon: https://amzn.to/2KipmI2
3s BMS with balance:
eBay:https://www.ebay.com/itm/3S25Aprote...
Amazon: https://amzn.to/2W9FRNU
12v 20A mini relay:
eBay:https://www.ebay.com/itm/SONGLE10pc...
Amazon: https://amzn.to/2Min8ev
Temperature switch (4x N.C. 45 degrees & 4x N.O. 45 degrees.)
eBay:https://www.ebay.com/itm/5pcs40160...
Amazon: https://amzn.to/2QwIhjt
Slide switches:
Amazon: https://amzn.to/2KaQnxe
eBay:https://www.ebay.com/itm/10PCS47mm...
60x10mm fan:
Amazon: https://amzn.to/2WbIiiZ
eBay:https://www.ebay.com/itm/12VDC60mm...
USB C trigger: https://www.ebay.com/itm/TypeCUSBC...
RGB controller: https://www.ebay.com/itm/Mini3KeyC...
Heatsinks:https://amzn.to/2ERkypP
XT 60, wires, and RGB strips are salvaged from old electronics.

Music used:
There It Is by ZAYFALL   / zayfallmusic  
Music promoted by Audio Library    • There It Is – ZAYFALL (No Copyright M...  

Spite by ZAYFALL   / zayfallmusic  
Creative Commons — Attribution 3.0 Unported — CC BY 3.0
http://creativecommons.org/licenses/b...
Music promoted by Audio Library    • Spite – ZAYFALL (No Copyright Music)  

Parasail Silent Partner (No Copyright Music)
   • Parasail – Silent Partner (No Copyrig...  
Altro Epic [NCN Release]
   • Altrøx  Epic [NCN Release]