I've had my 2016 Chevy Spark EV just over a year now, I've been using the 110v charger it came with to charge at home with very little need for fast charging as I only have an18 mile round trip commute for work. Three weeks ago I noticed I was progressively getting less and less rang each day despite charging over night from 5pm to 7:30 am outside. The two most recent weeks I've had 78 miles on the GOM with 100% charging the entire weekend with only a short trip to the grocery store on Saturday a mile from the house. I just finished my work week and staring at a predicted range of 12 miles. Despite being plugged in each night for just over 12 hours on the immediate charge setting at 8 amps. Part of me think this may be a temperature issue but its been in the high 70s over night so not out of the ordinary and I didn't not have this issue last summer.
I'm no electrician but based on my math I seem to be getting roughly 1 mile for each hour of charging at the moment. I've went and bought a new charger thinking that after 4-6 years its been with the car it might have finally worn out, however the new charger after 3 hours of charging on immediate usage has only added 4 miles of range this evening. I am now worried I may be looking at a major repair unless I'm missing something.