Lipo wiring Question

[Mark Fradkin]

I have a BK 12020 w/ wond 8XL set up UE spyder 8, Ue 6mm cvd 's & center, strobe 51 w 20pinon. Currently I am Have the 12020 wired for series 18 3300 promatch cells. I like this set up except for run time. I do like speed runs. I have ordered Apache 5s packs from mike. Should I wire for Parallel ?
Mike did mention it. Would the 12020 handle 5s in series? What would be the main differances between wiring 5s in Parallel & series.

Thanks to everyone in this forum, my truck runs very good, at least to me