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
