Use this electronics calculation for a first-pass component, converter, signal, motor, or sensor estimate when the stated operating conditions and units match the device data.

Absolute Throughput (Ah) (Ah)

Required number input.

Rated Capacity (Ah) (Ah)

Required number input.

Estimate full-equivalent battery cycles from total absolute charge-plus-discharge throughput divided by twice the rated ampere-hour capacity. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Equivalent Cycles

The resulting equivalent cycles returned as a number.

• Battery capacity, state of charge, runtime, and aging depend on chemistry, temperature, discharge profile, cutoff voltage, cell balance, charge method, rate capability, self-discharge, and prior history. Nominal amp-hour or watt-hour ratings do not guarantee usable energy under every load.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Check the result against the current datasheet and worst-case operating corners, then verify the circuit or measurement with simulation and bench testing where failure matters.

• Battery Discharge Rate C

  Battery discharge C-rate from current and rated ampere-hour capacity.

• Battery State Of Health

  Calculate battery state of health as measured full-charge capacity divided by rated new capacity, expressed as a percentage; values over 100% can be valid measurements.

• Discharge Depth Percent

  Compute the depth of discharge of a battery from the charge drawn and its rated capacity.