Added 30A fuses to both the positive and negative wire. Swapped out the deans for 5mm bullet connectors for the ease of using the precharge resistors. I use dual 1W 100Ohms resistors. Zero sparks now with 20S lipo. My setup doesn't look stealth anymore though. I had to choice as it was 95F today and there is no way the speed controller would keep it's head cool in the closed bag.