jmurtagh13 wrote: ↑
Fri Sep 11, 2020 11:04 am
22,186 Miles 30 months old. Last month's drop .12%, SOH 90.60
Charge only with level2 to a max of 65%. Charge early morning when it's cooler and the battery get's a chance to cool some. I don't drive aggressively so the battery temp stays below 85 deg most of the time, never above 90 deg. I feel like a I really baby the battery, yet the BMS shows about the same as others who have many more miles and do DC charging. I'm into ebikes and do the same by only charging to 65-70% and that definitely makes those batteries last a lot longer. I'm just not sure I believe the BMS, I guess more time will tell.
Based on your 2.5 year Hx graphic, increasing over time, Hx appears to be the ratio of the present battery resistance to the initial battery
resistance as a percent. This appears to be opposite to Leaf 1, where Hx measures the ratio of battery conductance over time as a percent,
and decreases over time as the battery degrades. Initially, Leaf 2 Hx appeared to move randomly, but your graphic lends insight to Hx
being a percentage value for increasing battery resistance over time.
#1 Leaf SL MY 9/13: 76K miles, 47 Ahrs, 5.0 miles/kWh (average), Hx=70, SOH=73, L2 - 100% > 1000, temp < 95F, (DOD) > 20 Ahrs
#2 Leaf SL MY 12/18: 10.3K miles, SOH 109Ahrs/115Ahrs, 5.2 miles/kWh (average), DOD > 20%, temp < 105F