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Battery Discharge Window and Throughput Calculator

Calculate charge used between states of charge and record equivalent full discharges from measured throughput; keep capacity basis and limits explicit.

Use this result well

Inputs that matter
Reference charge capacity (Ah), Starting state of charge (%), Ending state of charge (%), Sources and assumptions, and 2 more
Output to expect
Battery charge window and depth of discharge, Battery discharge throughput log
  • Check the units and required inputs before comparing results.
  • Keep the assumptions with a copied result so you can reproduce the calculation later.
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Reference & details

How it works

Battery charge window and depth of discharge

Separate the charge consumed between two states of charge from the ending depth of discharge. Use a stated reference capacity on the same charge basis; a charge percentage does not by itself give accurate battery watt-hours.

Window % = start SOC − end SOC; used Ah = reference Ah × window/100; ending DoD = 100 − end SOC.

Battery discharge throughput log

Sum measured discharge amp-hours and express that throughput as equivalent full discharges on one fixed reference capacity. This describes use, not remaining battery life or a health diagnosis.

Equivalent full discharges = Σ measured discharged Ah / fixed reference Ah.

Updated: September 2026

Example Scenarios

Try this example to see the calculation, then enter actual documented values and preserve the measurement conditions. A failed or unresolved comparison is part of the record.

→ 60 Ah used in the window

Try this example to see the calculation, then enter actual documented values and preserve the measurement conditions. A failed or unresolved comparison is part of the record.

→ 1.1 equivalent full discharges

FAQ

Separate the charge consumed between two states of charge from the ending depth of discharge. Use a stated reference capacity on the same charge basis; a charge percentage does not by itself give accurate battery watt-hours. Sum measured discharge amp-hours and express that throughput as equivalent full discharges on one fixed reference capacity. This describes use, not remaining battery life or a health diagnosis.

Use the exact equipment data, measurement point, operating conditions and units described in the selected mode. Record source documents, dates and unresolved conditions in Sources and assumptions. Built-in examples illustrate arithmetic; they are not manufacturer ratings or approved designs.

Use Save planning case for an explicit local history entry. Copy MD keeps current inputs and notes; Download CSV exports the result breakdown. Export portable copies before clearing storage and save a separate case after changing equipment, conditions or measurements.

About Battery Discharge Window and Throughput Calculator

Separate the charge consumed between two states of charge from the ending depth of discharge. Use a stated reference capacity on the same charge basis; a charge percentage does not by itself give accurate battery watt-hours. Sum measured discharge amp-hours and express that throughput as equivalent full discharges on one fixed reference capacity. This describes use, not remaining battery life or a health diagnosis.