EV battery prices are coming down markedly.
https://en.wikipedia.org/wiki/Electric_vehicle_battery#Battery_cost
"The MIT Technology Review estimated the cost of automotive battery packs to be between US$225 to US$500 per kilowatt-hour by 2020.
https://www.businessinsider.com/vw-electric-cars-battery-costs-versus-tesla-2019-9
VW claims to have battery cost under $100 per KWH of capacity.
Two problems remain. Battery lifespan is quoted at 10 years, and range. Lithium batteries don't degrade much per charge cycle, but when they do fail they do so rather quickly and completely. In other words, they are good right up until they aren't. The early Nissan Leaf is not a good example, as they have poor battery quality and don't hold up either over charge cycles or time. Early Tesla cars have already experienced a large number of warranty battery replacements.
Although covered by warranty, Musk claims the Model 3 battery replacement cost will be $5000-$7000 at around the 10 year mark. Although real world Model S owners are paying $20,000 - $25,000 for a replacement battery. The truth will probably be somewhere in the middle.
Range is another real problem. Claims of 300+ mile range are just not materializing. Highway trips cut that by at least 1/3 and charger locations limit choices of where to stop for a charge at about the 180 mile mark. Very cold weather cuts the range in half and increases charge consumption considerably, as the battery must be heated to accept the charge.
EV's will remain pricey and fun toys in the near future.
Nor are EV's necessarily more environmentally friendly. https://news.slashdot.org/story/19/04/27/1842245/electric-vehicles-in-germany-emit-more-co2-than-diesel-ones-study-shows:
Quote:
"Driving an electric vehicle in Germany produces more CO2 emissions than driving a diesel vehicle, a new study claims. schwit1 quotes the Brussels Times:
When CO2 emissions linked to the production of batteries and the German energy mix are taken into consideration, electric vehicles emit 11% to 28% more than their diesel counterparts, according to the study, presented at the Ifo Institute in Munich.
Mining and processing the lithium, cobalt and manganese used for batteries consume a great deal of energy... The CO2 given off to produce the electricity that powers such vehicles also needs to be factored in, they say. When all these factors are considered, each Tesla emits 156 to 180 grams of CO2 per kilometre, which is more than a comparable diesel vehicle produced by the German company Mercedes, for example"