keijidosha wrote:luma wrote:My Bolt battery was half depleted but the Energy Detail said:

Energy used since last full charge: 18.67 kWh

miles since last charge: 44.0.

Since using half the battery would mean at least 30 kWh since the last full charge, this does not seem possible. So it must have reset by accident or it glitched, right?

More generally, I'd like to know how much energy I'm using by driving, which is why I was looking at the energy used since last full charge. Are most people finding that it works? If Hilltop Reserve is on, does that count as a full charge? Also is there any wasted energy when you charge your battery, or do you get 1 kWh charge for every kWh you take off the electric grid?

Another option would be to count how many bars go up by charging, but that is only accurate to 5 kWh.

Thanks for any help!

"Half" using Hill Top Reserve should be around 27 kWh, so at 18.67 you are indicating diminished capacity. Charging efficiency depends on several factors, but is about 90% efficient using L2 at ideal temps. Your Miles per kWh works out to 2.36, also a low value.

You do not say where you are located, but cold weather, HVAC use, and preconditioning could also account for this.

I'm not sure where you got 27kWh from. I get 22.8kW.

Hilltop reserve charges to 88%. 88% of 60kW is 52.8kWh.

If the car really has "half" remaining, that's 50%, or 30kWh remaining.

The difference is 22.8kWh.

18.67kWh used still suggests diminished capacity. A cold battery cannot hold as much energy, which may contribute. How precisely "half" full was the battery? Did you eyeball the number of bars remaining, or use the app to view a percentage? Hilltop charges to 18 of 20 bars showing. Each bar represents about 3kWh. If you used 18.67kWh, that's just over 6 bars. I'd expect to see 11 or 12 bars remaining.