Originally Posted by MN Driver
That's really good data, I know you've posted info like this before but I don't know what temperature you are at for that level of sag. I'm asking because I'm looking to use 60Ah cells and 2.7v at 5C is more than acceptable for my car(with more cells), we have a much colder climate here in Minnesota but all I really need is to get near the level of performance you have and I'd be more than set. I don't think I'll need to add much heat at all to get the performance I need but was wondering if aiming for a 32 degree pack temp on the coldest winter night would be fine, and if your data is at, say 40 degrees, I'd think I'd be all set.
It is really hard to say, but it is above 40F. Pack interior temperature right now is 82, inside the garage is 86, and outside is 74 (with 70% humidity, not very western WA), and the overnight low was 60.
I'm going to do some historical weather checking to figure out what my January was like before shooting off a number...
It looks like winter around here could have been well described as being 42 for a high and 29 for a low. The garage only rarely gets below freezing inside as I blow a little attic heat into it in the winter (but the garage isn't insulated, so it doesn't stick around.) I have to guess that the pack temperature gets down to between 45 and 50. It is really hard to say as I drive less but the garage runs further above outside temperature in the winter.