First off, I don't want to pretend I understand the details here, so am starting from an "explain like I'm 5" position...
I saw a post from Dragon that referenced this table:
So I thought I would check my voltage yesterday to see how my 9.5 matches up. I was surprised to see the voltage all over the place
Am I just misunderstanding what is going on here? I was expecting voltage to be aligned with the table, and the % charge.
Battery version: 3007.
pacemaker The voltage of the battery in that chart is when it is idle (under no load) and at a particular temperature. It’s not an exact science. Best way to tell is to flatten the battery and then see how many kW it takes to fill.
pacemaker In addition to @ProximusAl comments, the % shown on that chart is for the actual battery top to bottom, your 9.5 battery and the % shown on the graph is not 0-100% of 9.5kWh, it's actually 15-95% of a bigger battery (to protect battery health), so the voltages and percentages won't align across graph and chart.
And ontop of all that they are the readings of a mystery cell.
The ones in GE packs will very likely be of different manufacture/tolerances hence why there are multiple maps for the BMS to use.
Exactly which pack has what cells fitted remains a mystery.
... and remember the voltage to SOC% plot is not a straight line graph, so take care when interpolating quoted voltages.
so clear as mud 🙂 excellent! thanks all