ORIGINAL: gregjones
Thank you and this is most helpful. So I should get two 7.2V 5000 mah 25C 2S?
Could I use ones that are a higher voltage 11.1 or 14.4 or would this burn our the ESC or Motor?
this boat is setup to run 4s total
so two 2s packs in series will make for 4s
if you go higher than 4s and I have run 5s in my SV (it flippin ripps!) then you need an rx pack for the esc and disconect the red wire on the esc
but stick with 4s total and have lots of fun with this boat

you could also run two 4s packs in parallel...
like two 4s 4000mah 20c packs that will give longer runtimes and a little better performance