What are the discharge characteristics of lithium ion batteries?

When you analyze the discharge characteristics of li-ion batteries, you focus on the charge-discharge curves. These curves show how voltage and current change as the battery charges and discharges. You typically see a flat discharge curve in lithium-ion cells, which means the voltage remains stable through most of the discharge cycle.

What happens if a lithium battery is discharged below 20% SoC?

At -20°C, discharge below 20% SOC can cause lithium metal plating, permanently reducing capacity by 5-10% per incident. Fully discharging lithium batteries to 0% causes permanent damage. Learn the risks and proper 20-80% charging rule for longer battery life.

What is a lithium battery pack?

Lithium battery packs have revolutionized how we power our devices by providing high energy density and long-lasting performance. These rechargeable batteries are composed of lithium ions, which move between the anode and cathode during charge and discharge cycles.

How do lithium ion batteries charge?

Lithium-ion batteries use the CC-CV (constant current – constant voltage) charging method. Voltage rises during constant current charging, then current decreases during the constant voltage phase. At higher discharge rates, you see a reduction in discharge capacity.

How much voltage does a lithium ion battery have?

At 50% state of charge, voltage can measure 3.55 V at a 3 A discharge, but drops to 3.0 V at 30 A. You need to understand these discharge characteristics to optimize battery packs for business or industrial environments. Learn more about lithium-ion batteries.

How should a lithium battery pack be charged?

It is recommended that lithium battery packs be charged at well-ventilated room temperature or according to the manufacturer’s recommendations. Avoid exposing the battery to extreme temperatures when charging, as this can affect its performance and life.