I just tried to charge my TMS wil a cold soaked battery. It had sat at 15-20F temps for a couple of days with a 64% full battery. I needed a 90% charge. My TMS is European, I connected the UMC with a 13A 230V adapter on it (3kW max). It did however not start to charge. Just a current spike to 5-6A, then it always (I tried many times, restarting car etc.) fell down to 1-2A. I did not expect it to start charging at once, but I did expect it to start heating the battery. 1-2A is however not enough for that, and I also left it drawing that for 30 minutes with no change. VisibleTesla showed 0.0A battery current the whole time. So I decided to heat the battery manually. I disconnected the charge cable and started pre-heating in VisibleTesla. After 20 minutes I turned it off, then connected the charge cable. Now it charged happily away at 13A, VisibleTesla showing 7.2A battery current and the range display increasing. But shouldn't battery heating start automatically when I want to charge? Surely it should draw the whole 13A/3kW for heating until the battery can take a charge?