zzzzzzzz wrote: ↑
Wed Mar 27, 2019 11:26 am
Bought new in April 2016, now with 41k as my daily commuter with about 40 miles driven each day. Slight capacity degradation; was getting ~16.5 kWh last year; now between 15-16 kWh.
Would like to keep it...but for how long? At what number of miles before no-one buys it?
The 2016 Spark EV HV battery is covered for 8 years, 100k miles or >40% battery degradation. The question is 40% of what? Assuming a new HV battery has a usable capacity of 18 kWh, the battery would have to degrade to a value lower than 10.8 kWh to qualify for replacement. Your best bet is to use TorquePro to measure the capacity of your HV battery. At 4 mi/kWh, 10.8 kWh would still give a maximum of 43 miles of range before calling the tow truck.
In the last 9 months, my 2016's HV battery has degraded 0.9 kWh. at this rate I should see 1.2 kWhs of degradation in 12 months. Assuming this is a linear degradation, that would give me 15.4 kWh in June 2019, 14.2 kWh in June 2020, 13 kWh in June 2021, 11.8 kWh in June 2022 and 10.6 kWh in June 2023. I purchased the car used in October 2017 but it was first registered in August 2016. So, my HV battery should be covered until August 2024 at which time I may only have 9.4 kWh left and the car could only be used for limited, local in-town short-trips. Hopefully, at that time I should qualify for replacement battery. If I do not qualify, I hope I can either purchase a new or rebuilt battery and put a new "Spark" in my Spark EV. If not - It will make one heck of a paper weight!!