ORIGINAL: revster
what batteries were you using for testing?
We used our car lipo pack, 2S 30C 5000mah the green pack, we see run times in excess of 10min and up to about 15min depending on how you drive it.
At a minimum Id say you can run a 2S 20C 3200mah pack if you have one laying around but for the best performance use a higher C rated pack with high capacity.
The battery compartment is actually pretty big and there are spacers included to shim the pack in place if needed. You will have a lot of room to play with different packs for sure.