Battery Runtime & Discharge Calculator
Estimate battery runtime from Ah or Wh, voltage, and AC/DC loads. Add inverter losses, depth of discharge, duty cycles, and battery-specific Peukert behavior.
Open the flagship toolProfessional tool collection
Electronics calculators
Battery, DC power and wiring calculations built around explicit inputs.
Start with explicit energy, voltage and load measurements. The calculators expose losses and assumptions but do not select protection, conductors or a safe installation.
3 published toolsLatest technical review 2026-08-22
Start here
Battery Runtime & Discharge Calculator
Workflow collection
battery dc power
Choose the narrowest tool that matches the measurement or decision in front of you. Each page states its own source, model and exclusions.
Battery Capacity Calculator
Calculate the nominal Wh and Ah required for a target runtime from explicit AC/DC loads, losses and usable-capacity factors.
Open toolBattery Runtime & Discharge Calculator
Estimate battery runtime from Ah or Wh, voltage, and AC/DC loads. Add inverter losses, depth of discharge, duty cycles, and battery-specific Peukert behavior.
Open toolBattery Series–Parallel Calculator
Calculate voltage, amp-hours, watt-hours and battery count for one explicit arrangement of identical units.
Open toolMeasure and verify
Practical guides
Battery series and parallel: arithmetic versus installation design
Understand what voltage, Ah and Wh arithmetic proves—and which compatibility and safety questions it cannot answer.
Read guideHow to collect battery-capacity planning inputs
A source-first checklist for target runtime, average load, inverter loss and explicit usable-capacity factors.
Read guideHow to Collect Inputs for a Battery Runtime Estimate
Find battery energy, load, inverter, duty-cycle, usable-capacity, and Peukert inputs without relying on generic chemistry defaults.
Read guideMeasuring Electrical Load for a Runtime Estimate
Choose a useful watts or amps measurement interval, distinguish AC and DC paths, and capture cycling or standby loads for battery runtime planning.
Read guideScope and review
Every published engine uses explicit units, retains full internal precision, and shows assumptions with the result. Check the page references and review date before purchasing material or using an estimate in professional work.
See the source and update policy or search every published tool.