One important characteristic of lithium battery discharge rate, which refers to how quickly the battery releases its stored energy. Understanding the lithium battery discharge rate is crucial for determining the battery’s performance and suitability for different applications. What Is C-rate?
Constant current discharge is the discharge of the same discharge current, but the battery voltage continues to drop, so the power continues to drop. Figure 5 is the voltage and current curve of the constant current discharge of lithium-ion batteries.
The manufacturer rating of the AAA lithium ion rechargeable battery states that the nominal voltage is 1.5V and can maintain up to a 2A discharge current. However, the nominal voltage of a standard lithium ion battery is 3.0V.
The charge and discharge current of a battery is measured in C-rate. Most portable batteries are rated at 1C. The c rate of lithium ion battery is a critical parameter that determines its power output, capacity, and lifespan.
The lithium battery discharge curve is a curve in which the capacity of a lithium battery changes with the change of the discharge current at different discharge rates. Specifically, its discharge curve shows a gradually declining characteristic when a lithium battery is operated at a lower discharge rate (such as C/2, C/3, C/5, C/10, etc.).
The discharge characteristics of lithium-ion batteries are influenced by multiple factors, including chemistry, temperature, discharge rate, and internal resistance. Monitoring these characteristics is vital for efficient battery management and maximizing lifespan.