didget69
Posts: 37
Joined: Sat Sep 03, 2016 10:26 am
Location: Raleigh, NC

Re: GOM (estimated mileage) and battery degradation

Fri Jan 17, 2020 8:15 am

Last night, I charged our 2015 Spark EV 2 LT at an EVGO station, and charged to 100%, with GOM showing 77 miles of range (50-degree temps last night).

Car has been in our hands since late 2016, when we purchased it as a 178 mile demo unit.
This is only the ninth time using L3/DC charging since we've owned the car. Each time on L3, we have waited until 100% is achieved.

We have primarily always charged at home on L1, and my wife plugs in the car at her office daily on their free L2 charger, always to 100%.

We have never stopped the charging at 80-90%, and have always let it stay on plug to 100% until ready to drive. 'Evie' is Now showing 23,206 miles, and 16.4kwh level on main pack.

YMMV.

Bryan

MrDRMorgan
Posts: 1127
Joined: Wed Oct 30, 2013 7:27 am
Location: Manteca in Central California

Re: GOM (estimated mileage) and battery degradation

Fri Jan 17, 2020 9:18 am

didget69 wrote:
Fri Jan 17, 2020 8:15 am
Last night, I charged our 2015 Spark EV 2 LT at an EVGO station, and charged to 100%, with GOM showing 77 miles of range (50-degree temps last night).

Car has been in our hands since late 2016, when we purchased it as a 178 mile demo unit.
This is only the ninth time using L3/DC charging since we've owned the car. Each time on L3, we have waited until 100% is achieved.

We have primarily always charged at home on L1, and my wife plugs in the car at her office daily on their free L2 charger, always to 100%.

We have never stopped the charging at 80-90%, and have always let it stay on plug to 100% until ready to drive. 'Evie' is Now showing 23,206 miles, and 16.4kwh level on main pack.

YMMV.

Bryan
I did not have TorquePro when I was driving my leased 2015 Spark EV, so I calculated my battery capacity using the data on the Energy Information screen in the car. My calculations show I had 16.4 kWh at 23k miles. However, there was considerable variation in the calculated data points. But, I show 17.8 kWh at 18591 miles in June 2017 and 15.49 in March 2018.

Using TorquePro, my 2016 Spark EV had 15.8 kWh at 16449 miles on 13 Feb 2019 and 15.7 kWh at 23045 miles 16 Aug 19. My latest reading is 14.7 kWh at 27761 miles on 16 Jan 2020.

What I do notice is variations in the battery capacity data that track the battery temperature at the time the measurement was taken. Lower battery temperature tracks with lower battery capacity.

didget69
Posts: 37
Joined: Sat Sep 03, 2016 10:26 am
Location: Raleigh, NC

Re: GOM (estimated mileage) and battery degradation

Fri Jan 17, 2020 9:45 am

I'm just getting started with checking battery capacity after 3+ years & it's merely curiosity for me.

I feel pretty confident that GM Engineers designed the packs to handle 100% charge at each 'fill-up' - Time will tell!

Bryan

Kermit
Posts: 129
Joined: Mon Feb 04, 2019 10:47 am

Re: GOM (estimated mileage) and battery degradation

Fri Jan 17, 2020 1:58 pm

didget69 wrote:
Fri Jan 17, 2020 9:45 am
I'm just getting started with checking battery capacity after 3+ years & it's merely curiosity for me.

I feel pretty confident that GM Engineers designed the packs to handle 100% charge at each 'fill-up' - Time will tell!

Bryan
Are you measuring with Torque Pro to get your capacity?
2016 Spark EV
2017 Volt

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