Lithium Pack Calculator
Enter the nominal cell voltage, cell capacity, and how many cells are connected in series and parallel.
- Nominal pack voltage
- Nominal pack capacity
Arithmetic only. This is not a battery design or safety tool and gives no charging, protection, current, thermal, wiring, or assembly guidance.
A QUICK WALKTHROUGH
How to use this tool
- Enter nominal voltage and capacity for one cell.
- Enter the series and parallel cell counts.
- Review the nominal pack voltage and capacity.
Nominal arithmetic only
This calculator uses the values you supply. It does not model discharge curves, usable energy, efficiency, ageing, or cell matching.
Not a battery design or safety tool
It gives no charging, protection, current, thermal, wiring, assembly, or battery safety guidance. Use qualified engineering review and the cell and pack manufacturer documentation for those decisions.
GOOD TO KNOW
Common questions
What does series change?
The nominal voltage is multiplied by the number of cells in series.
What does parallel change?
The nominal capacity is multiplied by the number of parallel groups.