Battery Voltage

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This is a rough guide to correlating at rest battery voltage to the state of charge.

There is respectable unofficial guidance that this curve varies as the pack ages over its lifetime.
These figures are determined from some selection of owners with logs, with minimal experimental controls.
Warning Warning: Your mileage may literally vary!
% SoC vs Voltage
Voltage vs % SoC
Voltage per SoC At Rest
VPack VCell SoC
115.9…116.2 4.14…4.15 100
113.9…114.24 4.07…4.08 95
112.0…112.3 4.00…4.01 90
109.76…110.8 3.92…3.96 85
108.36 3.87 80
106.96 3.82 75
105.56 3.77 70
104.16 3.72 65
103.04 3.68 60
101.92 3.64 55
101.36 3.62 50
100.80 3.60 45
99.68 3.56 40
99.12 3.54 35
98.56 3.52 30
98.00 3.5 25
97.16 3.47 20
96.60 3.45 15
96.04 3.43 10
95.76 3.42 5
95.20 3.4 0