Came across this little compilation.
http://elektromodellflug.de/hochstromst ... tecker.htm
If you don't understand German you can copy that link and have Babelfish translate............or TRY translate.
Found some alternative connectors to Deans Plugs and Andersons connectors.
http://www.rcplanet.com/E_Flite_Device_ ... aec303.htm
http://www.rcplanet.com/E_Flite_EC5_Dev ... aec503.htm
Aren't those plugs rated for 1 to 4 volts? I think they are tiny and not as good as Deans plugs.
IDK, I just noticed they were rated for some decent amperage. I updated teh second link to another one as teh previous link had a typo where they said the connector was rated for 12A when even the manufacturer states its 120A.
Also, the EC3's(60A) have a 3.5mm bullet connector so I'd think the EC5(120A) should have a slightly larger bullet connector and so it may very well be.
I also checked some of the plane kits they say come standard with it and those planes were stock 11.1V. But really, IDK as I've not seen or heard of them til now. I usually stick to the Dean's Plugs.