109 Wh/km ?

If Google Maps is correct in measuring my trip, I'm doing 177109 Wh/km on a return journey with stopping and starting and hills. I was driving like a nanna, and I limited myself to 10 or 11 kW (for 60km/h uphill, >80km/h downhill (56% at this sort of speed, the rest slower)). My record is now >20Ah and 20km without charging.

I still only have only 1/3 of my final battery installed and it's getting quite hot. (this is why I'm limiting my power to 10 or 11kW, about 3C). It's 25℃ at night here and the battery isn't even getting down to ambiant overnight. The trip started at 27℃ in the middle of the battery and ended at 33℃. My record battery temperature is 43℃ (after charging 20Ah at 30A right after discharging about 10Ah at 50-100A right after baking in the sun). This isn't very good for the battery. I need to install more cells so each one doesn't work so hard.

I'm charging without a BMS, I have my charge voltage set very low so it slows down as soon as the first few cells start to come up. Luckily none of the cells have come up by themselves, it's always a group which is enough to slow the charger down and stop it. I last balanced my cells back in September and October. Today I went round with my 3A bench supply and topped up the low ones. Of the low cells, most required only a few minutes of charging at 3A to come up above 3.6V (at 3A). 3 or 4 took about an hour each. I guess these cells have higher self-discharge.

Less than a 10% variance in absolute self-discharge over 4 months or so is really quite good. I've put very few cycles on the battery so I figure self-discharge dominates any other effect that would push them out of balance.