I just bought some new batteries and they came with EC3 connectors.
I had been using Deans T type connectors.
Rather than change all my connectors I decided to make an adapter to go between the Deans and the EC 3's.
After flying the EC 3 connecters were cool, the Deans not so.
I'm switching all my larger motors to the EC3 connectors.
EC3 Device & Battery Connector
, the connectors I have are EC5's not 3's.
EC5 Device & Battery Connector