Interesting stuff. Would love to see this on Android also!
1) Yes, a depleted pack shows weak cells. What I usually hear on this is to check the pack with just a few miles left (or zero is also OK as long as you're measuring it when you've stopped and the ICE is off). Also need to have the heater on MAX and at Max Temp in order to put a load on the battery. I have never heard that you need to let it sit for an amount of time.Great news for Volt owners! Thank-you BarryD! My understanding of cell balance voltages regarding overall battery pack health is:
1) best to check a depleted pack, ie zero range Charge Sustain mode, at least an hour after shutdown
2) delta of <50mv = good, >150mv = bad, 100mv iffy, (<20 = great) Propulsion Power Reduced triggers at 250mv
3) fully charged pack variance usually better than depleted pack, but if delta not better (especally if same cell is weak), a PPL may soon appear
Can you share with us how/when/why to interpret HV Battery Internal Resistance?
It's best to avoid WiFi dongles these days. Read the first FAQ here for my recommendations:Also, best to use Wifi or Bluetooth dongle? Thanks again for this great software tool.
No actually. For 3 of the 4 tests, it’s reporting saved data so it wouldn’t matter if you’re driving or not. For the Cell Balance test it will mess it up when you’re driving. Park it. Cell Balance information is most useful when observed at a low SOC (nearly depleted battery and with the Heater on Max at Max Temp (eg, with a constant load on the battery)).so just plug it in and go for an extended test drive and record the data! i can't wait! I plan to screen record with commentary on my test drive.