Battery Calculators
Free, no-registration tools to help you estimate battery requirements. All calculations run in your browser — no data is uploaded.
Battery Capacity Calculator
Estimate the battery capacity (Wh and Ah) you need from load power, runtime, voltage and efficiency.
Battery Pack Calculator
Calculate pack voltage, capacity and energy from cell specs and series/parallel configuration.
Note: These tools provide estimates for planning purposes only — not final engineering designs. Always verify with product datasheets and qualified professionals.
Learn more in our battery knowledge guides.