It almost looks like an over flow if the battery has 100% green bars, it would start filling that little added bar area . I have gotten the green all the way to the top, what happens after that ? I live up in reno, and going down from donner summit towards Sacramento the battery gets 100%
Oh, I have not gotten anything to show in the little area up top even though the battery is 100% full in the lower display area with tons of down hill still to go where no throttle is needed.
In every generation two I've owned there's always a white line right under the positive terminal of the battery shape and the energy display I don't care what I do if I charge the car with an external HV charger when the charger says it's full I'll still have that white line on the very top of that battery display like I just said I have four of these cars and they're all the same in that regard which is one of the few things
When the hybrid battery gets "full" (8 bars) during a long regenerative decel, the hybrid control ecu just stops charging. You then only have friction brakes or shift gears to B mode for some engine braking. Posted via the PriusChat mobile app.
The gauge has 8 bars on a white background. That's inside a graphic representing a grey battery, which includes some cuboids between the terminals. That's the top of the battery, not part of the gauge.
That's not entirely true, once the battery reaches its full level (80% SoC), the ECU does indeed cut charging and regen but it doesn't leave you with only friction brakes. Instead, the ECU replaces regen braking with the equivalent engine braking. If you apply more foot brake pressure the engine braking increases and is more substantial than the engine braking provided by B mode. You need a substantial descent to test this out.
