GaryHere wrote:I had this crazy idea today to bring my 15 Leaf to a car wash that I know has very cold water and use the undercarriage wash a few times to see if it would budge my constant 6 bar battery at all.
The stupid temp display has huge overlapping ranges and some black box algorithm: http://www.electricvehiclewiki.com/Batt ... ture_Gauge
. It could be from 50 F to 100F and still show 6 bars.
If you used Leaf Spy, you could see the effect, if any. For me, IIRC, if battery temp passes 59 F, that's about the right point for which 4 bars becomes 5. I don't recall typically when 5 bars turns into 6.
It needs to be very cold water, much colder than ambient to help much.
The water might be actually the same temp or not much lower than ambient, But, to you, it feels cold due to its heat transfer ability vs. air. Same goes if you touch cool metal vs. cool plastic. Both might be actually the same temp, somewhere below body temp but the cool metal might feel colder since it conducts heat from your skin better.
I can see that L2 charging from 35 or 40% to 80% typically raises my pack temp a few degrees (maybe 5 to 7 F, memory foggy).
I think you guys mentioned to me on my other thread that it takes some time for that large mass to get affected by any temp change.