EV Battery Glossary

Electric Vehicles

BMS: Battery Management System

The BMS is an electronic system that manages a rechargeable battery or battery pack, keeping it safe and long-lasting, while tracking its condition, reporting data, and controlling or balancing the battery.

VIN: Vehicle Identification Number

The VIN is a unique 17-character code, including a serial number, that allows the automotive industry to identify each motor vehicle, trailer, motorcycle, scooter, or moped.

Battery Chemistry

LFP: Lithium Iron Phosphate;

NCA: Nickel Cobalt Aluminum;

NMC: Nickel Manganese Cobalt

LFP is considered the safest, longest-lasting, and most cost-effective chemistry but has lower energy density. NCA and NMC batteries offer higher energy density for longer driving ranges in EVs, but are more expensive and slightly less stable than LFP.

SoH Calculation

OBD: On-board diagnostics.

OBD refers to a vehicle's self-diagnostic and reporting capability. OBD systems give the vehicle owner or repair technician access to the status of the various vehicle sub-systems, including the battery.

OTA: Over-The-Air (Hardware-free)

OTA refers to a method to remotely access manufacturer data to calculate the battery’s State of Health (SoH) without needing hardware connected to the vehicle.

SoH Calculation Standards

UN GTR: United Nations Global Technical Regulation

The UN GTR is an international framework that defines uniform safety, environmental, and performance standards for vehicles and their components, promoting global harmonization and compliance across countries.

SoCE: State of Certified Energy

The SoCE represents the officially verified energy content of a battery or energy storage system, ensuring it meets regulatory or manufacturer-certified standards for capacity and performance.

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