Posts

Showing posts from January, 2019

Electric Vehicle Home Charging - Charging to 80%

Image
EV Home Charging - Charging to 80% Maximum State of Charge If you have been around the EV community long enough, you have probably heard the advice to keep you battery's state-of-charge (SOC) below a certain level if you don't need the range for a road trip.  The number quoted is often 80%.

Keeping the SOC of a lithium-ion battery above a certain point for long periods of time, particularly in the heat, has been shown to accelerate early degradation of the battery capacity.  There are scholarly articles to dive into the details such as this one from BatteryUniversity.com.  
I encountered the two-dimensional temperature - SOC plot on David Laur's David Laur's blog that focuses on life with a Nissan LEAF.  The purpose is to communicate the best combination of temperature and SOC to maximize battery longevity in the LEAF's passively-cooled battery pack.  In Dave's words:  "Now, we all know Nissan put the fear of God into us when charging to 100% and letting …

Plug In West Michigan Podcast - Episode 1 - Myths

Image
Part of WKTV Journal Grand Rapids, MI Community Programming Listen Here: Episode 1 - EV Myths
Episode 1 Show Notes
IntroductionHost: Karl BlossBlog: www.muskegonevguy.comInstagram @muskegonevguyWest Michigan EV community:  www.facebook.com/groups/WestMichiganEV/Guest: Tyler Burke 
Main Topic:  Electric Vehicle MythsLinks and ReferencesAARP magazine: Electric Cars: Chevy Bolt EV vs. Tesla Model 3Finding charging stations:PlugShare site:  www.plugshare.com/PlugShare appiOS appAndroid appCharging networks:EVGoChargePointElectrify AmericaElectric Vehicle torque and accelerationYouTube: Electric Vehicle Torque at 0 RPM ExplainedYouTube: Tesla Ludicrous Model S launch reactionsElectric Vehicle tax credit:Energy.gov referenceUS News & World Report articleElectric Vehicle operation cost

EV Road Trips - Placement of Public Chargers

Image
EV Road Trips - Placement of Public Chargers The narrow Missouri Route 127 bridge across Interstate 70 was never intended to be crossed on foot.  As I walked  over the bridge, the lack of sidewalk or even a shoulder more than several inches wide made the approaching pickup truck swing a wide arc across the double yellow line as a courtesy to give me more room.  Gusts of airflow buffeting from high-speed trucks passing under the bridge did little to mitigate the Midwest September heat radiating from the blacktop.  I picked up the walking pace to get off this patch of pavement more quickly.  A bottle of iced tea and the air conditioning inside Casey's General Store in Sweet Springs, MO helped combat my body heat as beads of sweat combined to create an uncomfortable flow down my face, neck and spine.

My 2016 Nissan LEAF was parked at the I-70 Community Hospital on the south side of the Interstate charging its battery on one of the 7 KW ChargePoint charging stations, the only ones in…