2023 M3 RWD LFP Capacity

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Kerbe

Kerbe

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As Tesla doesn't reveal the capacity of their battery packs anymore, there seems to be a lot of speculation across the mavens and pundits on the internet: I've found various reputable sources (ie. "long-time posters") giving figures of 60, 60.2, 60.5 or 62kWh while all pretty much agreeing that the useable capacity lies somewhere between 57 and 58kWh.

I pulled into my garage with 10% capacity remaining and charged to 100% overnight - adding 54kWh. So it pretty much appears that my useable capacity is right at 57.5kWh - unless I'm doing the math incorrectly...
 
Close, the correct calculation:
54 kWh / (100% - 10%)
54 kWh / 90%
54 kWh / .9 = 60 kWh
​
I used this technique to estimate the battery capacity at the dealer in Florida of my 2017 BMW i3-REx. The larger the SOC change, the more accurate the true capacity. Don't forget there are parasitic loads and battery capacity is a function of temperature. So use it as a 'rule of thumb' better than nothing.

Bob Wilson
 
Part of a sentence was missing from my original post and I didn't notice until after it was too late to edit!

As Tesla doesn't reveal the capacity of their battery packs anymore, there seems to be a lot of speculation across the mavens and pundits on the internet: I've found various reputable sources (ie. "long-time posters") giving figures of 60, 60.2, 60.5 or 62kWh while all pretty much agreeing that the useable capacity lies somewhere between 57 and 58kWh.

I pulled into my garage with 10% capacity remaining and charged to 100% overnight - adding 54kWh. So it pretty much appears that my useable capacity is right at 60kWh, unless that 10% was actually 6% - which would indicate a useable capacity of 57.5kWh - unless I'm doing the math incorrectly...
 
"too late to edit!" been there, done that. <GRINS>

Hopefully, my minor correction did not cause any angst. It is hard to remember to 'smile' when posting some polish to an excellent post.

Bob Wilson​
 
bwilson4web said:
"too late to edit!" been there, done that. <GRINS>

Hopefully, my minor correction did not cause any angst. It is hard to remember to 'smile' when posting some polish to an excellent post.

Bob Wilson​
Click to expand...
Not a problem, Mr. Bob!
 
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