From 80% to LBW in 53 miles

[TonyWilliams]

My 60 mile round trip @ 5.3 Mi/KW,
in Houston 9.5.12 (Temp 88*F - 98*F)

% Charge__GOM___Mi/KWh__ Bars__Actual Miles
----------------------------------------------------------
100______96/88____Reset__12/12___0.0
58_______61/55_____5.3___ 7/12___30
17_______21/19_____5.3___ 2/12___60

(10 bars for 60 miles ~= 6.0 miles per bar)

Assuming the GOM is correct and 20 real miles are left.

That would mean the car would travel 80 miles w/100% charge.

At 5.3 Mi/KWh (dash) that would mean the Leaf battery
supplied ~15Kwh for the trip. (1 5KWh * 5.3 Mi/Kwh = 79.5 miles)

So where is the rest of the battery?

Edit: it appears you concluded that 10 of 12 bars were used, therefore 17% remains. If that is your assumption, it's wrong.

First, forget the GoM. It is absolutely pointless for these types of calculations, and for me, pointless for anything at all.

So, sifting through the data, you drove 60 miles at 5.3 miles/kWh, using 83% of the battery. I presume that 17% is the Low Battery Warning; if not, how did you get that number? Is it a Gidmeter?

A normal, new, nice warm battery will bang out 5.3 * 21 = 111 miles total available range. Calculating 83% of that range is 92 miles. A battery as warm as yours can actually do a bit better than that.

So, you went 65% of 92 miles. Please don't tell me some of this data is from CarWings, or you are counting fuel bars and making a guess at 17%.

My first guess would be that you didn't have a 100% charge to start with, or your 17% number is grossly inaccurate.

For a reference, the Low Battery Warning will come on at 17.4% of the capacity of a like new battery, and Very Low Battery will come on at 8.6%. Check out the range chart in my signature line.

 

[smkettner]

Assuming the GOM is correct and 20 real miles are left.

I recently had 7 miles showing on GOM and 8 miles to get home.
Ran the air conditioner as it was 90 out and arrived home with 5 miles remaining.
That is why it is called a GOM

 

[dznit]

1) No low battery warning. (from your data: more than 17.4% left)
2) 100% is from charger set @ 100% and shut itself off
3) I must confess 17% from carwings.
4) ~14,000 miles in ~14 months, almost all charging @ 120v using Texas wind,
No: low (or very low) battery warning, turtle or Quick charge. Battery temp ~6 bars year round.
[Last summer made the same trip many times starting with 100 - 114 miles and
ending with 28 - 30 miles. GOM]
5) I need a better way to determine SOC! (Gidmeter?)