If you have an old np-fm-30 battery, that doesn't work. Make it work again with 18650 cells.
In my case, i used four 18650 cells and the old good one charging board.
There are two sets of two batteries connected in series (2s2p)
Each 18650 cell has 1800mAh (set of two cells in parallel will give as 3600mAh)
The battery cells are connected in series and will give as 7.4V output power.
Following you can see my video and photo with schema
Video link here
https://youtu.be/6hfmeFPO7Gs
Photoes schemas
In my case, i used four 18650 cells and the old good one charging board.
There are two sets of two batteries connected in series (2s2p)
Each 18650 cell has 1800mAh (set of two cells in parallel will give as 3600mAh)
The battery cells are connected in series and will give as 7.4V output power.
Following you can see my video and photo with schema
Video link here
https://youtu.be/6hfmeFPO7Gs
Photoes schemas
