SparkevBlogspot
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- May 25, 2015
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Assuming 50 kWh battery (more or less), 80% charging efficiency (conservative estimate)MrDRMorgan said:Assuming it would take approximately 1.5 hours of DCFC charging to fully recharge the battery in the Bolt, how long would it take to recharge at home using an L2 charger - 15+ hours?
3.3kW charger : 50 kWh / 3.3 kW / 0.8 = 19 hours
If it comes with 6.6kW charger, 19 hours / 2 = 9.5 hours. It will be bit shorter due to higher efficiency. Also, this takes conservative estimates, (ie, 50kWh @ 80%), so actual time will likely be shorter.
DCFC question is only relevant to number of vehicles on the road, whether it's SparkEV or Bolt. But you're right that we will need lot more DCFC. Instead of building CA high speed rail, they should build more DCFC. At $20K/station, 1 million DCFC would only cost $20B, far less than $70B of HSR. In fact, they can also give away 1 million SparkEV at $25K ($25B) and still have $25B left over. That would save more fossil fuel and greenhouse gases and all the benefits, but that's for another topic; I discuss this very point in my blog.MrDRMorgan said:I do not know what will happen to home charging but we are going to need a lot more DCFC charging stations with more than one dual charger cable at each location - like Tesla's charging locations with multiple stations.