12kwh = 12,008 ;-)

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elm70

Well-known member
Joined
Sep 27, 2016
Messages
1,156
Location
Poland
I was wondering how the 12kwh battery capacity is provided.

Normally battery capacity is given by Nominal Voltage x Nominal Current .. the LEV50 per the PDF https://www.gs-yuasa.com/en/technic/vol5/pdf/05_1_021.pdf .. is rated exactly as 185wh ... or 99wh per kg

Since we have 80 LEV40 .. the math should be that our PHEV nominal capacity it is: 11.84kwh (40 x 3.7 x 80)

Instead Mitsubishi managed to use only 38Ah, and rated the battery 12kwh

I think they decided to use this formula:

Max Usable Voltage 4.1
Min Usable Voltage 3.8

Average 3.95v .. so capacity is 3.95v x 38Ah x 80 cells = 12.008wh or 12kwh

Quite a tricky way to declare the battery capacity , especially after deciding to use 5% less nominal capacity for their safety margin
 
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