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Battery Life Calculator
Calculate battery life, required battery capacity, and average current from duty cycle for battery-powered electronics.
Calculator category
Battery Calculators
Calculate battery capacity, runtime, charging, energy, pack configuration, and other battery system parameters.
Available Calculators
10
Engineering Applications
4
Calculators
Each listed tool links to a working calculator with engineering inputs, formulas, examples, notes, and related resources.
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Battery Capacity Converter
Convert battery capacity between µAh, mAh, Ah, and coulombs for charge-unit reference.
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Battery Energy Calculator
Calculate battery energy, required capacity, or nominal voltage from Wh, Ah, mAh, and voltage.
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Battery Charging Time Calculator
Estimate battery charge time, required charging current, or added capacity from SOC, efficiency, and current.
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Battery Discharge Calculator
Estimate discharge time, remaining usable capacity, or runtime-based average current from SOC and usable capacity.
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Duty Cycle Battery Runtime Calculator
Estimate runtime, average current, or required capacity for Active, Idle, and Sleep duty-cycle load profiles.
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Battery Pack Voltage Calculator
Calculate series battery pack nominal voltage, full-charge voltage, cutoff voltage, and required cell count.
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Battery Series & Parallel Calculator
Calculate battery pack voltage, capacity, energy, total cell count, and series-parallel configuration.
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Battery C-Rate Calculator
Calculate battery C-rate, charge and discharge current, required capacity, and maximum continuous current.
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Battery Efficiency Calculator
Calculate coulombic efficiency, energy efficiency, round-trip efficiency, energy loss, and required input energy.
How to Use These Calculators
Start From the Engineering Question
Choose the calculator that matches the decision you need to make: decode a component marking, size a value, check a frequency response, estimate loss, or verify a safety margin. A category page is useful only when it helps you reach a working tool, so this page lists released calculators only.
Check Units and Assumptions
Calculator results depend on unit choices, idealized formulas, tolerance, temperature, frequency range, and component limitations. Review the formula and engineering notes on each calculator page before using the result in a schematic, BOM, or PCB layout.
Validate Against Real Parts
Use the calculated value as a design reference, then confirm it against datasheets, derating curves, layout parasitics, measurement conditions, and manufacturer limits. The related guides below provide background when a calculation needs more context.
Engineering Applications
Battery runtime
Pack configuration
Charging estimates
Energy budgeting
Related Engineering Guides
Engineering Guide
Measuring Battery Capacity: Coulomb Counting, Offset, and Cutoff
Measure delivered Ah and coulombs from current samples while controlling offset, timing, discharge cutoff, and test conditions.
10 min · Intermediate
Engineering Guide
Battery Pack Architecture: Cell Matching, BMS, Balancing, Fusing, and Thermal Safety
Design battery packs beyond ideal series-parallel arithmetic using cell matching, current sharing, BMS limits, balancing, fusing, isolation, thermal controls, and validation.
18 min · Advanced
Engineering Guide
Battery Charging, Discharge Limits, Efficiency, and Runtime Validation
Estimate charging time, usable discharge, efficiency, and runtime with explicit SOC, taper, temperature, aging, BMS, and validation boundaries.
20 min · Intermediate
Engineering Guide
Battery Capacity, Runtime, C-Rate, Energy, and Pack Sizing Guide
Learn how Ah, mAh, Wh, runtime, usable capacity, efficiency, C-rate, charge time, discharge limits, and series-parallel pack sizing fit together in battery-powered electronics.
20 min · Intermediate
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