Thanks. There is a similar usage screen on the bolt but i'm really looking for a more accurate downloadable version of kwh's accepted in a charging session.
This third party solution may help: https://sense.com. As far as a feature built into the car, I am not aware of one.
My ESVE does this already. I also want to know about the ESVE's I use on the road and also what my car received vs what the ESVE said it delivered.
on the Gen 1 volt the power needed (from the wall) to charge the volt is approximately 1.35 x the reported power consumed out of the previous charge. That is, if you volt was full, and you info display reports that you have used 6 KWH to drive, it will take 8.1 KWh from the wall to fully recharge your volt. This number is at 120 volts, at 240, the number is a bit lower, but not by much (1.25-1.3).
Comparing the monthly report from OnStar with the daily data I keep on a spreadsheet, I came up with a correction factor of 1.148. Someone verified his charging losses with the data from his third party EVSE and found that my approximation was very accurate. My point is that the charging loss factor appears to be closer to 1.15 than 1.35. This applies to Gen1. I'm unsure if the charging system in Gen2 was made more efficient.
It may be helpful to consider the physics of vehicle energy use when charging. The car is charging with some efficiency (say, 90% or a factor of 0.9) and it is also using power to run the battery thermal management system. The amount of power needed by the BTMS is likely a function of the charging power. These 2 terms combine to give a total charge efficiency that is a function of the power your EVSE provides. A low power (L1) EVSE will likely have lower overall efficiency because the BTMS will consume a higher fraction of the toal power (even if its absolute power draw is constant).
Sounds good but at L1 the power to the battery will be much lower requiring less BTMS cooling, thus balance things out some.
That sounds perfect but the myvolt website either doesnt work for the bolt or is broken at the moment. Has anyone confirmed this works with the bolt?
Unfortunately, unless it's just well hidden, the charging data isn't in the mychevrolet site yet.
*grin* It'll be hard to tell. As far as I know "Broken and/or unable to contact the vehicle" is the normal state of the mychevrolet site. It works about 15% of the time for me when the car is in the surface lot. (And essentially NEVER if the car's in its basement slot sipping on the charger...)
I should have mentioned that I charge L1 @ 12 amp setting.
Your number is correct as far as charging losses at 120V. However, the charging losses are much lower at 240V, I believe closer to 10-15%. I have been charging my 2015 Gen1 Volt with a Voltec L2 at 15A which is not networked, so I can't get an exact number from it.
I just logged in to myChevrolet. For Electric economy on my Gen1 Volt 2015, it shows :
Looks like myvolt.com has more info than my.chevrolet.com indeed. But the Bolt does not show on myvolt.com .
Mine has been the same for 4+ years. Maybe they should hire somebody that can do web construction.
