I discovered S.O.C. gauge for GenIII

I've a P3 and a Scangauge and tried your numbers today - and it looks good !!! - at least nearly .... I think that the Math - calculation is not completely right - I read in other threads here, that the Prius battery SOC moves between 40 and 80%, and that with 6 bars in the Prius display the battery is in the range of 60% .
I got up to 65% on the Scangauge with 4 bars and up to 82,5% with 6 bars (didn't got more charge in my battery today).
So there is an offset missing or ..... ?

But - congratulations !!! - you found out the SOC !

Regards to Spain from Germany !

 

Very interesting! I'll test it out.

I do know the SoC never goes over about 81% and that is with insane downhill force charging... usually by 78% the ICE is bleeding off battery power so the math must not be quite right -- but it may just be something easy to adjust.

SoC doesn't drop below 40% unless you force it by keeping the ICE off in neutral. By 25% the car screams to put the car back into park.

But at 40% you are at 1 bar. If I remember right at about 70% you are at full charge. Or maybe it's 75% ...

 

Ok, just tested in my car against known values .. and the math isn't correct.

Xgauge --- Actual
70.0 --- 54.9
69.5 --- 54.5
69.0 --- 54.1
68.5 --- 53.7

Here is the correct MTH:

TXD 07E2 015B
RXF 0441 855B 0000
RXD 2808
MTH 03E8 00FF 0000

On his original reading the SoC is actually 54.1% not 69%.

Excellent find! All Scangauge owners can now know their actual SoC on their Gen III Prius.

 

Here's the updated math for people using the ELM327:

8Ah = 138d * 100d / 255d = 54.1%

 

Yo Adrian,
You going to add this to your Google spreadsheet? Thanks!

 

Already done. There may be other useful data in that PID. I will check it out this weekend.

 

Does anyone know if this is compatible with Camry Hybrid (2007) ?

And--does anyone know how to program the ELM327 value into the app 'Torque' ?

Thanks