List materials to buy:
-Battery 18650: https://goo.gl/3bZKqe
-Protection board 3s: https://goo.gl/cRx5G3
-Niken Strip: https://goo.gl/QNtcaz
-DIY Battery Welding Machine: https://goo.gl/PGbhcS

*Buy a new battery welding machine: https://goo.gl/xSi7SS

* Watch more video
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- DIY 2.1 Bluetooth Speaker Using Colored Pencils: http://bit.ly/2IlnoEo
- DIY Bluetooth & Wifi Speaker: http://bit.ly/2GoP5va
- DIY Buetooth Speaker: https://goo.gl/UzrZRR
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- How To Make A Bluetooth Speaker Using Plastic Bottles: https://goo.gl/A9xKFG
- DIY 2.1 Bluetooth Speaker Using 100W Subwoofer:
https://goo.gl/i1pPUY
- How To Make Boombox Bluetooth Speaker Using Pipe Plastic (New Version): https://goo.gl/tExBri
- How To Make Boombox Bluetooth Speaker From Pipe Plastic:
https://goo.gl/8y3VSx
- Building Portable Bluetooth Speaker https://goo.gl/nMKukP
- How To Make A BoomBox Bluetooth Speaker https://goo.gl/t8zYjD
- How To Make A Solar Power Bank Charger For Mobile:https://goo.gl/K7s9Hg
- Building Awesome Bluetooth Speaker With Wooden Wine Box: https://goo.gl/BGbDLW
- Diy Bluetooth Speaker From Box Tea: https://goo.gl/DUSj8x
- How to make 24V RECHARGEABLE BATTERY: https://goo.gl/BTbzp6
- Building Bluetooth Speaker From Coffee Box: https://goo.gl/b8MAE4
- How to make 3s Battery: https://goo.gl/oL2cfM
- DIY Cooling Fan For Laptop: https://goo.gl/z3SRtR
- DIY Flashlight 5OW: https://goo.gl/Qm2EGx
- DIY Stand Fan From Brushless Motor 12-24V:https://goo.gl/Zj6t4h
- DIY Battery Welding Machine: https://goo.gl/PGbhcS

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