powersurge wrote:I am sorry if I don't sound sympathetic but, who gives a hoot about having seriously accurate data on battery remaining... It sounds really excessive and obsessive. ...
You do not have enough experience with 21 months experience and with a 2015 LEAF that being in Long Island, NY has very modest capacity degradation to yet understand the need and usefulness of knowing the Remaining kWh that are available.
At this point you have 19 to 19.5 or possibly 20 kWh when your LEAF is carged to 100%.
When it hits LBW with only two status of charge bars remaining it is probably at 3.5 kWh remaining.
Depending on your driving range needs you csn probably get by not knowing how far you can go at LBW and below.
My first two years I didn't have any devices and did OK without them.
But even then knowing remaining kWh would have been extremely useful when I was four miles from DCQC and all I had was flashing bars, or the time I stopped and did DCQC 7 miles from home but probably could have made it home had I known Remaining kWh.
Once you lose 30% capacity knowing Remaining kWh becomes essential because Remaining kWh below LBW becomes a bigger and bigger % of your maximum range.
I'm sorry but you just do not undrrstand what you are talking about and I hope I have been informative.