If you have OnStar active you can go to myvolt.com and download the history of the last 7 days, 30 days or a year, you will get soemthing like this:
Charge Start Charge End Total Charge Time Charge Result kW-hr
10/24/16 at 05:11 PM CDT 10/24/16 at 05:28 PM CDT 0 hours 17 minutes Partial 0.36
10/23/16 at 04:34 PM CDT 10/23/16 at 07:06 PM CDT 2 hours 31 minutes Full 3.22
10/23/16 at 09:18 AM CDT 10/23/16 at 10:54 AM CDT 1 hours 35 minutes Partial 2.03
If not and you are using 120v you can get a killawatt from harbor freight (or equivalent) and get reading for every 7 days.
Fred
Siren Red 2007 Premium
Charge Start Charge End Total Charge Time Charge Result kW-hr
10/24/16 at 05:11 PM CDT 10/24/16 at 05:28 PM CDT 0 hours 17 minutes Partial 0.36
10/23/16 at 04:34 PM CDT 10/23/16 at 07:06 PM CDT 2 hours 31 minutes Full 3.22
10/23/16 at 09:18 AM CDT 10/23/16 at 10:54 AM CDT 1 hours 35 minutes Partial 2.03
If not and you are using 120v you can get a killawatt from harbor freight (or equivalent) and get reading for every 7 days.
Fred
Siren Red 2007 Premium
