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Discussion Starter · #1 ·
My car is on the road, and I'm trying to get a better feel for what kind of range it has...I'm charging the 2014 Leaf cells to 4.1V as "full" and I'm treating 3.6V as "empty". When the average is around 3.7V or maybe 3.8V, I find the voltage dips below 3.6V readily when I accelerate.

I understand that for the same power, lower voltage means higher current, and higher current means voltage sag...but can anything be improved? I feel like I'm losing 20% of my range to sag. Is it less bad to dip below 3.6V due to sag than it is through constant, lower current drain? Is it extra bad to pull a lot of amps when the cells are low on charge?

I suspect it's just physics, and I'll need to add batteries (or use better batteries), but I figured I'd raise the question...It's tough to figure out the remaining range when the second half of the fuel tank drains much more rapidly than the first half...
 

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Discussion Starter · #3 · (Edited)
I do have a current sensor that is taken into account for my "fuel gauge", but it seems...quite optimistic. It showed somewhere between 20-30% when I was starting to dip below 3.6V...I'm just concerned about stressing the batteries out. Good call on the Leaf forum, they seem to get into this shit pretty heavy at times...

Thanks! There's still a lot to do, but it's a fun little fucker...
 

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Discussion Starter · #5 ·
Oo, thanks—I shall peruse...

I'm currently using 30 of 48 modules (216-246V)...I was hoping to hold there to keep weight down, but I'd like 50 miles of range easy from 80% to 20%, taking into account AC and other convenience draws...
 
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