Took my spartan out yesterday with my new 3 cell 8400mah so I had two sets. Put the one set through. Then went to put other set in when it wouldn't proform the same. Then just stalled there was loads of water going through it. So took it out the water the capasators were banging hot and was swollen right up one had dropped down again. So rang castle creations and spoke to Bernie there (what a cracking chap). He said to send it back to the usa. When I took it apart I saw that the ESC had melted on the middle port/connection so I'm sending both the motor and ESC to USA. So I'm back off the water again.