You can buy V922 batteries from 4-9 each but there’s a way to save some $$$….
I’ve bought from Hobbyking :
- 10 JST Male connectors.
- 10 JST Femal connectors (for this mod you only will need one but for this price…).
- 5 Turnigy Nanotech 300mah 3.7 (1S) 35-70C discharge rate.
Total no more than 16$ for the pack.
The modification its quite simple, just de-solder the battery connector attached to the main board and replace it with a JST Female cable TAKE CARE ABOUT POLARITY
Now its time for pulling out the original connector on the Nanotech batt.
Put a JST male connector on the battery (AGAIN TAKE CARE ABOUT POLARITY) and it’s done.
If you want you can build a balanced charging cable to charge 3 batts at the same time.