Hi Chazz8: What parameter in the ScanGauge-2 provides the traction battery current draw? I'd like to get that on my ScanGauge "home screen". Thanks!As soon as any Toyota hybrid or plug-in starts in READY mode, it will start charging/topping-off the 12v. You can see OBD 12v voltage jump up into charging ranges (13.7v - 14.4v) when the R4Prime starts (READY), or when you plug in the EVSE and start a charging session (as see in video below). We need to check what else triggers energizing the Rav4 Prime DC-DC converter that powers all 12v components and charges the small/puny 12v battery.