Originally Posted by Thomas Porfert

I agree whole heartily, go with a stronger connector in the future. You need a connector that can actually handle more than 70 amps continuous. The failure of the capacitors is a tail-tale indication of ripple voltage, leading to damage of the capacitors. It may have been related to inadequate batteries; but if you were running 30C+ continuous then it shouldn't have been a problem. It is highly recommended to upgrade to Dean's Ultra Plugs, Traxxas Power Connectors or 5.5mm or 6.6mm bullets; something rated for equal to or more than 70 amps continuous.

We are recommending going with a battery with a 150 amp or higher continuous discharge (IE 5000mAH @ 30C continuous). Anything less could potentially lead to an ESC failure due to ripple voltage. But a strong battery pack is useless without an appropriate connector.

Thomas Porfert
Tech Support
Castle Creations