The Molex connector as used by Ctek are not really designed for regular plug/unplug. I quite regularly have to give the female pins (as on the lead from the charger) a squeeze (oo'er) to make sure there is decent connection with the male pins in the connector from the battery.
There are much better connectors available - there should be a small article on Morganatica after I gave Tim the info on superior connectors.
J, the symptoms you give are for a poor / non existent connection (or totally defunct battery). After all the delays with the wheels, this must be particularly annoying.
Last edited by Graham, G4FUJ; 08/11/17 03:08 PM. Reason: Usual dyslexic fingers