Mon Sep 07, 2020 11:46 am
The only references I have seen to Hx have been in numerous threads on this forum--nothing in the Nissan service manual (for either 2011 or 2015) provides lists or definitions of information available from the CAN Bus. On all of the vehicles I have data for (the replacement battery for the 2011, the 2015, and the 2019), Hx started out above 100% so it must be referenced to some nominal value and not the actual starting value for the particular battery. I have the most data for the 2015 and Hx did seem to inversely track the internal resistance over the 4-1/2 years I drove that car. I observed/tracked internal resistance by noting voltage drop under full load and calculating approximate internal resistance periodically.
Based upon my observations with the 2011 and 2015, I recommend driving the car as you wish. Don't be afraid to accelerate hard or drive on the freeway within range limitations. Don't be afraid to routinely discharge the battery deeply and/or charge to 100%, but don't let it sit deeply discharged for more than a few hours and don't leave it parked at full charge for more than a day or two. In general, try to minimize the time spent at full charge and have charge level between 40% and 70% for extended parking (such as at the airport). Don't be afraid to use "B" mode to get maximum regeneration. Don't be afraid to use DCQC when necessary, but try to avoid multiple QC sessions in a day to avoid overheating the battery (especially in high ambient temperatures). Use the highest rate of L2 charging that your car and power source will support for routine charging to minimize the drop in Leaf Spy numbers. Also, faster L2 charging is more efficient if the battery is deeply discharged (no real difference when battery is close to full charge due to charge tapering). When the 2015 (with 6.6 kW onboard charger) was new, it took 26.41 kWh to charge from shutdown to full charge using my 12-ampere EVSE Upgrade unit on 240 volts at home. Using my 30-ampere AeroVironment EVSE, it took 25.45 kWh on 208 volts at my workshop and 24.85 kWh on 240 volts at home.
Last edited by
GerryAZ on Mon Sep 07, 2020 2:17 pm, edited 1 time in total.
Gerry
Silver LEAF 2011 SL rear ended (totaled) by in-attentive driver 1/4/2015 at 50,422 miles
Silver LEAF 2015 SL purchased 2/7/2015; traded 8/10/2019 at 82,436 miles
White LEAF 2019 SL Plus purchased 8/10/2019