There's nothing wrong with this product except that it isn't what it says it is.
Hopefully this review will prevent someone from the annoyance I felt from having purchased this connector.
The product description says the EC3 portion this connector is FEMALE but the gender is actually MALE.The product picture unfortunately does not reveal this.
ProgressiveRC Comment: There is often confusion on connector nomenclature, we are very consistent on our site. To be clear: all connectors are designated by the housing, not the bullets or other pins inside of the housing. One good reason for this is that some connectors have one male and one female type bullet inside. The photos on our site should clear up any confusion on this as they clearly show the housing type. For EC3 or EC5 connectors the smaller male housing is on the battery side with female bullets in the housing, while the charge or ESC side connector would use the larger female housing with male bullets inside.
The EC3 gender is actually MALE Submitted by Len McWilliams on 4/29/12