Before replacing a high voltage battery pack or battery section on 2017-2023 Bolt EV and 2022-2023 Bolt EUV models (Fig. 10), the battery pack must be correctly identified.
Fig. 10
Due to manufacturing changes in cell chemistry, some mid-model 2023 Bolt EV and EUV vehicles will be built with N2.2A chemistry cells in the battery pack. N2.2A cells cannot be used in 2017-2023 models designed for N2.2 cells, and N2.2 cells cannot be used in vehicles designed for N2.2A cells. The two N2.2A and N2.2 cell chemistries also cannot be mixed within a pack.
N2.2A packs must be repaired only with N2.2A sections and N2.2 packs must be repaired only with N2.2 sections. Individual sections will have a label designating N2.2 or N2.2A. (Fig. 11)
Fig. 11
Be sure to identify the correct part number before ordering and installing a replacement battery pack or battery section. Check the Investigate Vehicle History (IVH) RPO list for each VIN to identify if a vehicle is built with N2.2A chemistry. Look for RPO EKZ in the Vehicle Build section. RPO EKZ was introduced as a mid-year change for the 2023 model year.
Also check the label on the exterior of the high voltage battery packs that designate either N2.2 or N2.2A chemistry. Verify the part number and check the label on the battery to ensure that the correct chemistry is being installed into the vehicle.
For additional information, refer to Bulletin #23-NA-051.
– Thanks to Jason Breed
Does anyone know what difference is between these chemistries?