Chevy Bolt Battery Calibration Data
Chevrolet Bolt EV N2.2 Cell Battery Data
Here’s the calibration data for the N2.2 cells that are used in the newer batteries for the Chevrolet Bolt EV. Since the fire recall and battery replacements, all Bolts at this point should have this battery pack and thus have the same calibration data.
Maximum Charge Rates
Another way of looking at it, at various temperatures:
Here’s a rough translation to Power (kW) – note that the anecdotal evidence seems to indicate that the temperature limits are lower than the calibration data, as we do see ~56kW with a pack below 35℃.
Expected Capacity and Loss
Note that the calibration tables starts at a capacity of 63.7kWh, which matches the 64kWh that the battery is marked at.
It’s “expected” to lose about 1.3% capacity every 15,000 miles.
| Odometer (mi) | Odometer (km) | Expected Capacity (kWh) | Expected Loss % |
| 0 | 0 | 63.7 | 0% |
| 15000 | 24140 | 63.7 | 0% |
| 30000 | 48280 | 61.56 | 3% |
| 45000 | 72420 | 61.43 | 4% |
| 60000 | 96561 | 60.29 | 5% |
| 75000 | 120701 | 60.16 | 6% |
| 90000 | 144841 | 59.03 | 7% |
| 105000 | 168981 | 58.89 | 8% |
| 120000 | 193121 | 57.76 | 9% |
| 135000 | 217261 | 56.62 | 11% |
| 150000 | 241402 | 55.48 | 13% |
| 165000 | 265542 | 54.36 | 15% |
| 180000 | 289682 | 53.22 | 16% |
| 195000 | 313822 | 52.08 | 18% |
| 210000 | 337962 | 50.95 | 20% |
| 225000 | 362102 | 49.81 | 22% |
Sean, I am seeing a greater loss of capacity than the table. I posted an article at chevybolt.org summarizing my findings. I’ve seen about 5% loss at 7,500 miles.
Paul
How exactly are you calculating this? Don’t forget that temperature will drop your capacity, so it’s normal to see capacity go down over the winter and back up again in the summer. If you truly have 5% loss at 7500 miles there is something wrong with your battery.
Sean, interesting stuff, but the color key on these charts seems off?