My 0%-100% Battery Reset Experience, picked up 4 miles
I only had 299 mi on a Model 3 with ~7,000 mi on it (V9 now). I recently did some superchargers (1,600 mi to the Tesla Factory and back). SC told me that some of my cells might have been passed up or skipped due to these consecutive fast charges and that I should take it down to 20%. (FYI, as some have stated here, my Supercharges were typically 25%-75% which only takes only 15 min for a 50% charge in this range, and I've documented it several times. It could be that I was just out of calibration as other's have written here by not taking to 90% for some time.)
I realize that you should never let it sit unplugged, but I've been told on previous visits that a drain->recharge is OK (how else are people doing endurance tests and holding records on most miles travelled on a single charge). So I drained it to 0% and immediately recharged at 32A all night (not 48A as I installed the stock charger which is plenty). Got it back to 303 mi for a gain of 4 miles
Here's a graph of the experience... interestingly, it wasn't until I hit 2 miles remaining that the car told me that I needed to plan my next charge, LOL (really loud)! Maybe it knew I was close to the mall or home, who knows. Also, I had to try it once, but I did 0-60 in about 6 seconds much to my surprise... so these batteries are nowhere near empty at 0% IMO. Also, with Headlights, Stereo, A/C, 5 seat heaters all on, in the garage, the headlights didn't even dim. I was looking closely on those heavy bass notes - nothing but full brightness. I'm sure I could have kept going a while, but figured long enough - time to charge.
It all looks normal to me, but I cannot recommend taking it this low. I'm just a "what would happen if..." and "why not" kinda guy. Actual max was 302.99 and it dropped back to 300 mi by morning (sitting ~6 hrs). I need to bleed some off now ASAP (also no good to let 100% sit so I've been told). Nice acceleration at this charge for sure! Definitely quicker than 5 sec.
