bdgriner wrote:I’ve been driving EVs for 5 years and had my most recent Leaf for 2. I understand the miles remaining is very inaccurate but suspect the percent remaing isn’t either. I rountinely Drive 75 miles a day to and from work and get the second low battery alarm and blank screen for miles or battery remaining. I have the 30KW Leaf and when I recharge, I get between 19 and 21KW on my charger. The question I have is why am I getting an alarm for 10% remaining when I should have 30% left? It’s one of the first 30KW models and wonder if something is not set right in the software? Anyone else seen this? Any suggestions?
Battery capacity is measured in kWh not "KW". The amount of energy that comes out of your "charger" (likely an EVSE w/no charger because for level 1 and 2 AC charging, the charger is on-board the car) and "wall" is also measured in kWh.
I can't speak for the 30 kWh Leaf since I don't have 1, but on the '13 Leaf, as I stated at viewtopic.php?f=31&t=17895
, LBW (1st warning) used to sound at ~17-18% and VLBW (2nd warning) at 7-8% per the car's dash display. Those values have gone up slightly as the battery has degraded (and I have a different '13 Leaf now). The gid values (you need something like Leaf Spy to see them) at viewtopic.php?p=387707#p387707
seem correct for 24 kWh Leafs. Can anyone chime in on what gid and dash display values they sound on 30 kWh Leafs?
What value on the dash display do LBW then VLBW sound at? How many capacity bars have you lost, if any? http://www.electricvehiclewiki.com/File ... bars_s.jpg
is a 3 bar loser.
Also, not all the energy coming out of the wall makes it into the battery. And, not all 30 kWh are usable. Nissan leaves some portion at the top and bottom in accessible. IIRC, TonyWilliams has asserted 30 kWh Leaf has about 26.5 kWh usable, on a new battery. Don't know how accurate that is, but that's likely close.
Also, as the battery degrades, since it will have less capacity, if you charged from 0 to 100% on such a degraded battery, less energy will come out of the wall than vs. a new one.
If you really want to have a better idea of what's going on, you should get Leaf Spy. If you want to see why it can be useful, watch this 11 minute video at https://www.youtube.com/watch?v=cgE8lmySdMI
. If the talking to too slow or repetitive, use the gear icon on PCs or Macs to increase the playback speed.
Background info on charger vs. EVSE at:viewtopic.php?p=262630#p262630http://www.sae.org/smartgrid/chargingprimer.pdfhttp://www.sae.org/smartgrid/chargingspeeds.pdfhttps://openev.freshdesk.com/support/so ... -sae-j1772