Measure Battery's Actual Capacity and Coulombic Efficiency (CE) using Arbin
Benefit of Battery’s Capacity and CE measurement
Battery capacity and Coulombic Efficiency are critical indicators of a battery's characteristics and suitability for various applications:
可选模块: Method
Charge/Discharge Capacity: This is calculated using the formula:
Charge/Discharge Capacity = ∫ 𝑖(𝑡)𝑑𝑡
Coulombic Efficiency: CE is determined as:
Coulombic Efficiency = Discharge Capacity / Charge Capacity

To achieve stable and repeatable results, it is recommended to use a consistent charge/discharge pattern across all cycles.
Conduct CE test on Arbin
A typical CE test procedure can be listed below:
Step 1: Initial Rest
Step 2: Charge battery to full (SOC=100%)
Step 3: Rest for battery reaching electrochemical balance
Step 4: Discharge Battery to empty (SOC=0%)
Step 5: Rest for battery reaching electrochemical balance
Step 6: Loop back to Step 2
Implement this procedure to Arbin schedule file:

Then add criteria for charge/discharge cutoff, loop times and data log:

You are all set!
Let Arbin system takes care of everything then

Real-time voltage/current display
Zoom in for detailed curve

Real Time Capacity Display
Complete Test Data Summary
Test Statistics by Cycle
Auto Calculate Capacity and Coulombic efficiency per cycle

Test Statistics by Step

Detailed Test Data
