The main purpose of this battery pack is an ultra-long range drone flight. I assembled it with the intention of reach a total flight distance >25km.
To achieve this goal, i need a really good cell with high discharge rate and as many Wh as possible.
Molicel INR21700-P42A is the one for me.
You can find them on this site:
https://eu.nkon.nl/rechargeable/li-ion/21700-20700-size/molicel-21700a-4200mah-30a.html
If you want to build your own version, you MUST use a spot welder to connect the cell together. A normal soldering iron will cause them to overheat and degrade their performance.
| 6S2P_21700_Pack_-_Bottom.stl | 337.6KB | |
| 6S2P_21700_Pack_-_Spacer.stl | 262.4KB | |
| 6S2P_21700_Pack_-_Top.stl | 438.9KB |
