RE: Ikarus Shock Flyer Extra set-up help
I went with the Ikarus recommended pack for the Hacker B20-31S brushless; a Thunder Power 1320 3 cell.
I also use an iRate 3 cell 850 mah with great success.
Both work extremely well with Hacker combo.
More power than you could beleive...
Good Luck!
Spit out...