I'm not 100% sure so someone can correct me if I'm wrong. The voltage difference is either on the top right of the battery chart in large writing or on the bottom of the chart in brackets, on the line where it says min/avg/max. Mine is usually around 20-30mV. I don't know what counts as an unbalanced pack. To balance your pack you're supposed to charge to 100% and leave it plugged in for four hours and it'll do it automatically. Ie, just fully charge it overnight and let it sit for a few hours after. That's going by what I read a while ago.
I think it’s weird that the GOM is down to 1 bar but LeafSpy reckons there’s 23% left in the tank.
I know Nissan does program a buffer (2kwh) from some where I read for emergencies but such a big discrepancy?
Welcome to the wonder of LeafSpy! To be honest, now that I've run couple of experiments running on low battery charge, the GOM is surprisingly reliable on lower end, i.e. if the GOM says 9km, you'd better plan your trip as-if you only have 9km left!
If you want to push the car into unknown territory (that the GOM can't tell you), then, 'kWh remaining' figure in LeafSpy is your new best friend! I've been using LeafSpyPro, so not sure whether this screen is the same for you or not:
The figure I highlighted above in red is taken from the Leaf's onboard computer, i.e. GID (Wh = GID * 77.5). My naive understanding so far, this is the most reliable indicator. Anyway, trying not to get too much into technical, in order to get remaining distance, you need to know (accurately), how much energy left (in kWh) in your battery.
The simple reason, is, you know roughly (mostly by experience on your journey) how much kWh/km your prospective consumption. Knowing this figure (i.e. kWh/km), you can predict reliably how much distance you have left, by entering that figure manually in the yellow box I highlighted above.
LeafSpy allows you to do this manually. In the example above, I chose figure 149Wh/km (which is super conservative), then I know I have 9km left until I hit VLBW (after this, the GOM simply blanks out). My dash looks like just like yours when the screenshot above taken (but with 11 ~ 12 according to GOM).
By using the LeafSpyPro like the above, I know that I have at least 13km distance remaining (the GOM is not too far off at the time).
Now, what is really valuable having LeafSpyPro, is when one to venture out to the 5% remaining SOC. But that's another topic, as you want to watch your battery voltages (V Delta above). As soon your Leaf cells go haywire (more than 0.1V differences in cell voltages), you're going to dangerous territory. That is the reason I put 'Delta V' in my custom screen above (I think custom screen only available in LeafSpyPro).
Have fun with LeafSpy!
PS: SOC uses Ah (Ampere-hour). Unfortunately, Ah is not really the best way to gauge your remaining energy. You deplete Ah quicker at the bottom end.
PPS: What I've found interesting, when I go really low (below VLBW, sub 2kWh remaining), the 'remaining kWh' figure slows down (although I'm still consuming power as indicated by 'Used kWh'). I still haven't got to the bottom of this, but my guess so far, the GID value in the Leaf's computer trying to re-learn actual remaining kWh in the battery. My guess (pure guess), the GID algorithm is not so accurate with guessing Leaf's dilapidated battery. However, this is another topic, I think I confuse enough people at this stage...
Last Edit: Jul 22, 2019 15:01:33 GMT 11 by rusdy: Adding PS and PPS