Elite 200 Charger 2

Hi - I have an Elite 200 v2 which I have been using in my campervan with the Charger 1. I have just upgraded to the Charger 2 and have just driven for 30 minutes with the app showing a charging input of 650W.

The Charger 2 links to the Elite 200 via an Anderson connector and an XT60 cable 12AWG rated at 45A maximum. After a 30 minute journey I had difficulty removing the XT60 plug from the Elite 200 socket - on inspection the plug had started to melt. Can the Elite 200 / XT60 socket cope with 650W input? Do I need a higher spec input cable or is this just a faulty connector? Anyone had this issue?