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LEAF Battery Survey: Vehicle 121

Report Date Acquired Acquired Date Odometer Bars Gids Ah City
Oct 31 2012 06:15 PM PDT n/a - Own 12/2011 8,598 12 Chapel Hill, NC
Jul 01 2014 05:58 PM PDT New - Own 12/2011 22,453 12 237 Chapel Hill, NC

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Selected Report Details

Submitted: October 31, 2012, 06:15 PM PDT

Vehicle
Survey Vehicle ID 121 (2 reports)
Model Year 2012
Manufactured 10/2011
Acquired 12/2011
Level 2 Charger 3.3 kW
Quick Charge Port Yes
Location
City Chapel Hill, NC 27516
Country United States
Battery Pack
Odometer  8,598 mi
Capacity Bars 12
Perceived Range About the same
SOC Meter No
80% Charge n/a
100% Charge n/a
Battery Pack Replaced n/a
Charging
Charge Method Level 2 Charging Station (208 to 240V)
80% Charge Frequency Daily
100% Charge Frequency Rarely
Top-off Charge Frequency Rarely
Parked Charged Frequency Never
Number of Quick Charges 0
Driving
Driving Frequency Daily
Typical Trip Distance 25 mi
Portion of miles driven on highways and freeways 0%
Typical Freeway Speed 0 mi/hour
Typical Elevation Gain n/a
Low Battery Warnings 0
Turtle Warnings 0
Battery Drained 0
Ownership Status
Acquired n/a
Ownership Status Own
Date Disposed n/a
Nissan Battery Report
Report Date n/a
Frequent Quick Charging n/a
Frequent Top-off Charging n/a
Inefficient Driving n/a
Parked With High SOC n/a
Comments
I recently went to a workshop by a battery expert who advised us not to charge over 80%, especially with higher voltages, and that it doesn't matter how long the battery sits at full charge. The problem is spikes 10mv above 100% SOC during charging that lead to instant and permanent deposits of lithium in the graphite anode. The higher the voltage and the closer to 100% SOC the more spikes. Batteries are made with extra lithium in the cathode to help reduce the effect of these deposits.
Carwings Data
Year Distance
Travelled
(mi)
Average
Energy
Economy
(mi/kWh)
Electricity
Consumption
(kWh)
2010
2011
2012 8,290 4.6 1796
2013
2014
2015
2016
2017
2018

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