Charge Rate (kW)
What is it?
The charge rate, measured in kilowatts (kW), is the speed at which electrical energy is flowing into your vehicle's battery at any given moment. It is the EV equivalent of how fast fuel flows from a gas pump nozzle.
How it works
The charge rate is not constant; it fluctuates based on a "charging curve." When an EV battery is nearly empty (e.g., 10% State of Charge), it can accept energy very quickly, often hitting peak charge rates of 150 kW or more at a DC fast charger. As the battery fills up (especially past 80%), the vehicle's Battery Management System intentionally slows down the charge rate to protect the battery cells from overheating and damage. Temperature also plays a huge role: a cold battery will charge much slower than a pre-conditioned, warm battery.
Why it matters
The charge rate determines how long you will spend waiting at a charging station. Knowing your vehicle's peak charge rate and understanding its charging curve helps you avoid frustration. For example, it is usually much faster to charge from 10% to 80% than it is to charge from 80% to 100%.
The Aximote Advantage
Because Aximote is integrated directly into the car's infotainment system, it monitors the live charge rate directly from the Battery Management System. Aximote logs the entire charging curve for every session. This allows you to look back and see exactly how fast your car charged under different conditions, helping you understand your vehicle's real-world charging performance better than any manufacturer's brochure.