I just got back from a 2,360 mile road trip that involved 5 range charges. The thing that I found most surprising was that my range INCREASED by 4 miles over the course of the trip. I know I shouldn't have been too surprised by this based on things yobigd20 and others have posted, but after seeing the max range steadily decrease over time it's still a very nice surprise to see things go the other way.
That is great to hear that too from others seeing their range "increase".
I do think there are a few varying factors to the "increase". One of course is "balancing". But the other is doing a full 100% depth of discharge cycle. This is nothing new, and I've stated it elsewhere as have many others, but just to reiterate here again after reading a few more things about Li-Ion battery chemistry. Basically, we should all know by now that doing the shallowest discharge/charge cycles is the best for the long-time health of out battery (aside from the obvious don't charge to 100% and leave it there especially in hot weather as well as the don't discharge to 0% of leave it there for weeks/months).
But lets say your daily charging routing is the following: charge to 70%, drive to work and have 55% remaining, charge back up to 70%, go home arriving at @55%, and charge back up to 70%. In this pattern, you're only doing two 15% depth if discharges daily. This is very good for the health of the battery. However, with Li-Ion battery chemistry, there is no cut-and-dry method of knowing what the exact charge state is. It's not like a gas tank where you can peer in and see how "full" it really is at 70%. I am omitting all the electrical details from here regarding voltages, temperatures, etc (because I admit I don't fully understand it all myself either). Basically there are methods of testing that will get you close, but it's not exact. The software can only do the best it can at "estimating" the state and range when you charge to 70%. Over time, this just gets a bit out of sync and the result of this is showing a "lower range" on our displays when that's not actually representative of the true charge state of the battery (also, this is applied to all cells, but I am described it as one big single cell). The only known reliable way of "resetting" this to be more accurate is to fully deplete the battery to 0%, and charging all the way to 100% again (which is NOT recommended to do
daily, as described before the best daily pattern for long term heath of the battery is to minimize the depths of discharge). This accuracy is also assuming that the pack is fully balanced (which it won't be so this also isn't going to be 100% accurate to the battery degradation state either, but that is not what I'm trying to describe here).
So based on this knowledge, this is why it's not surprising to me to see someone get results like this - aka going on a road trip and doing several huge depths of discharge cycles and thus seeing their range increase at the end. IMO this is "expected" behavior, and I'm glad to see that it's working!