SageBrush
Posts: 4219
Joined: Sun Mar 06, 2011 2:28 am
Delivery Date: 13 Feb 2017
Location: Colorado

Re: What's the charging efficiency?

Fri May 31, 2019 11:46 am

lorenfb wrote:
SageBrush wrote:
lorenfb wrote:Assuming 6.6 kW for L-2:

I = 6.6 kW / 360 = 18.3 amps (ideally)

P (battery dissipation) = I^2 X R (battery resistance) = 18.3 ^2 X 60 mohms (.06) = 20 watts (fairly cool on the touch)

Yes, and presuming a 4 hour charge, 80 Wh of heat into the pack mass. I've looked it up before but have forgotten -- what is the specific heat capacity of the pack ?


Very negligible temp rise, most likely within the accuracy of measurement.

That is my guess also
2013 LEAF 'S' Model with QC & rear-view camera
Bought off-lease Jan 2017 from N. California
Car is now enjoying an easy life in Colorado
03/2018: 58 Ahr, 28k miles
11/2018: 56.16 Ahr, 30k miles
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2018 Tesla Model 3 LR, Delivered 6/2018

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