Looking through some old posts.
Found some crappy old footage of my Ken Block Fiesta
And some of the Super 5SC
That should be motorvation to get atleast 1 battery for the fez..
I use cheap ebay youme power 4s batteries in my car (so depending on your esc's battery capability) and a 2 pack of 4s 6500mah lipos was $120. Yeah theyre cheap china batteries but im yet to have any issues with ballance charging or uneven cell discharge. As for chargers, aslong as its capable of ballance charging at a 1:1 rate, so for example a 3s 4000mah battery you charge at 3s @ 4A, things should be apples. Only other thing commonly forgotten is either order the correct battery connectors for the esc and charger or adapters.