My car was parked for 3 days in the garage and with the recent sub zero temperatures we have been having, the battery was down to 0°C.
I wanted to charge last night so I switched the plug on and expected to go to bed. It started pre-heating the battery, as I have seen before, but this time it was much longer before it actually started charging. The battery was up to 16°C before I gave up watching and went to sleep, but I can see from OVMS that it was 1h45m before it actually went into charging mode. This seems much higher than I remember - is it a 3.0 thing?