My wife and I have been hiking up at Mt Charleston weekly to avoid the heat down in the Vegas valley. The climb is 5700' to the trails above. I was not paying much attention to the battery, but my wife noticed last week that the battery % was actually increasing on the drive back down the mountain. That surprised the heck out of me! I knew the regen braking would add some charge back into the battery but never expected that just driving down the mountain would do the same! I am use to driving an ICE car up the mountain and using the brakes most of the way back down. It is so nice to not need to ride the brakes going down the mountain. Anyway, I did a short video yesterday to demonstrate the results of our ride up/down the mountain and to show the battery % change. I was also surprised at the huge demand in power going up the mountain, nearly 3 times the normal wh/mile going up. This is kinda useful to know for anyone planning a trip up a mountain to avoid running the battery down too low or possibly even to 0%.