Doc B
Well-Known Member
Thanks. It would be great if we could find a way that works consistently to pre-heat the battery. I think you are right that an extended charging session seems to heat the battery which probably means it is just the act of charging that heats the battery rather than the car actually pre-conditioning the battery, which is annoying since it would mean having to ensure the car has been charging for an extended period of time immediately before leaving. As per some of the other posts on this thread, since temperatures started to dip below around 20C/70F, my range has progressively begun to suck - currently much closer to the Turbo EPA estimates, and sometimes a fair bit below.I should really document each journey in detail, as of late, my half hearted observations have been to satisfy my curiosity.
I've been unable to control what temperature the battery preheats achieves. I'm just about to finish work and the car has been charged to 82% on a 7Kw charger. I've just looked and the battery is reporting 22 Celsius. The other day when I charged overnight at home, the next morning the battery was at 28! I believe charging is what heats the battery because I've plugged the car in overnight without needing a charge and if I recall correctly, the next morning the battery temp was in the high teens. I'll have to test that out again sometime!.
I have two timers and two profiles set-up (work and home). Recently I've switched the battery to min charge to 55% and optimised thereafter with a target of 80% on departure/preheat cabin to 22.
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