I'd recommend not going with hardcase packs in boats. There isn't any air circulation inside the boat and hardcases tend to run slightly hotter inside a boat due to that. Also the 4mm plugs that are imbedded inside the battery are going to be the week part of that battery. Look up the turnigy 2s 5000mah 40c packs. The usa warehouse might have them. Cheaper and will perform very well in the SV. JMHO!

http://www.hobbyking.com/hobbyking/s...arehouse_.html

* Remember to grab a lipo shield for your SV as the stock esc is not lipo ready.