EC5 series adapter I was waiting for finally arrived. I was able to series 4 3s Floureon lipo packs to achieve 12S total.
Boat runs nearly 20 degrees cooler now. Esc runs max voltage on this setup. Only thing that can push the esc a little further would be some nice balanced Octura props.
(ESC: Electronic Speed Control)
Only upgrade to the boat is 10-32 nickel plated brass bullet prop nuts.
Stay tuned for more RC videos.
Thanks for your support!