Cell Resistance Estimator
Understanding internal resistance is crucial for battery cell selection and performance optimization. This calculator helps you measure and analyze the internal resistance of your cells to ensure they meet your project requirements.
The Cell Resistance Estimator helps you:
- Measure Internal Resistance: Calculate the true internal resistance of your cells by comparing voltage readings under load and no-load conditions. This helps identify cell health and performance capabilities.
- Determine Maximum Current: Find the safe maximum current draw based on your acceptable voltage drop percentage. This helps prevent excessive voltage sag and ensures stable system operation.
- Power Loss Analysis: Understand power dissipation through internal resistance, which affects battery efficiency and thermal management requirements in your battery pack.
To use this calculator, you'll need to measure your cell's voltage both unloaded (open circuit) and under a known load. You can either input the load's resistance or the current draw to calculate the cell's internal resistance and its maximum safe current capability.