Herm said:rainnw said:If these cells were actually charged all the way to 4.21 volts (aka, true 100%), you would see a bend at the start as well. interesting....
Thats crazy talk, 4.15v is really pushing it.
No, its really not. A lot of lithium ion chargers will actually charge to this voltage per cell. Its a great way to reduce battery life for very little extra capacity.
It looks like the slope at 175 (raw) SOC is only half of the slope below 50 SOC. Therefore TWICE as many miles per bar in the middle than at the low-SOC end.
Lithium ion cells will have an immediate drop, flatten out near their average voltage (3.75, for example) and drop down again rapidly. This makes perfect sense. I am glad to see the "100% SOC" is after this first drop, which indicates that even the 100% SOC is conservative.