We picked up our Model 3 Standard last Thursday (Southhampton UK), drove home and charged to 100% overnight as its LFP batteries and ranges from 50%-100%. We drove around on Friday and came home to again charge overnight but to 70% as we have a cheap electricity tariff for four hours overnight. We've done this many times before with our model S, no problems. This morning I checked the car and it ignored the limit I set and went right through to 100% charged. As the limit still shows that it was set to 70% I know that I did not make a mistake. Any thoughts on what's going on here?