I ran the battery down to several miles below the flashing dashes of StateOfCharge below 5%. Not intentionally. Started with 98% and went 40 miles home. Over confident since I had been getting by with 65% of my charge in the morning (tail wind and always a selection of large vehicles to follow at an easy 65 mph) and 75% at night (faster traffic and slight headwind). So on this one trip I used up 95%? driving too fast to chase up to too fast moving traffic and blaring the heat at 1.5 kW. According to the car. Leafspy said 12.4% remaining, with a lowest cell at 3.508 and a pack voltage of 342.26. I charged to 100% and the Juicebox stated 18.1 kWh from the wall. Even though the Leafspy always reports a much higher remaining SOC than the car at the bottom end, they both agree when at 100 %. Possibly the car is figuring in the dynamic sag under loads while driving? And the juice box screen shots are always done after parking the car and fitting in the dongle which offers a few minutes of rebound? So the SOCs on the car seem to indicate that I have about 18.7 kWh left of my battery which shows an StateOfHealth of 86.49% on that day.
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I'm playing with the Juicebox programming to learn how to set a charge that brings SOC to no more than 90% to be easy on my battery. I pulled in last night with 20% showing on the cluster, set the Juicebox to add 14kWh with a time of use on/ off, which it did perfectly. The car then showed 91% this morning. So the designated energy added was 71% according to the car. Inverse of .71 is 1.4085. Times the 14 kWh added equals a 19.72 kWh capacity of my battery as extrapolated from the energy that added in from the wall. Now I need a notebook to keep a log in the car.
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This would be much simpler if Nissan would offer a user programmable setting in the cluster or infotainment center as to the maximum charge percentage desired. It would be in their best interest to reduce warranty pack replacements if enthusiasts could select partial charge levels of their choosing to baby the packs.
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Do other EVs offer this feature?