Engineering Calculators

Battery Backup Calculator – UPS Runtime

Calculate battery backup time for UPS systems.

Battery (Ah)

Voltage (V)

Load (W)

Efficiency (%)

Result

Battery Energy0 Wh

Backup Time0h 0m

Battery Backup Formula

Runtime = (Ah × V × Efficiency) / Load

Battery Backup Example Calculation

150Ah, 12V, 500W, 85% → 3h 4m

Frequently Asked Questions about Battery Backup

How to increase backup?

Related Calculators

Power Calculator

Calculate electrical power in watts from voltage and current.

Solar Panel Calculator

Calculate solar panel system size and number of panels.

Voltage Calculator

Calculate voltage using Ohm's Law from current and resistance.

Current Calculator

Calculate electrical current from voltage and resistance.

Energy Consumption

Calculate energy consumption in kWh and electricity cost.

Pressure Calculator

Calculate pressure from force and area.

Popular Tools

VAT Calculator

Calculate VAT (Value Added Tax) quickly. Add VAT to a price or remove VAT from a gross amount with our free online VAT calculator.

Percentage Calculator

Calculate percentages easily. Find what percent one number is of another, or calculate the percentage of a number.

Loan EMI Calculator

Calculate your monthly loan EMI (Equated Monthly Installment). Find out your monthly payment, total interest, and total amount payable.

Profit Margin Calculator

Calculate profit margin percentage from cost and revenue. Find gross profit margin, net profit margin, and markup percentage.

SMV Calculator

Calculate Standard Minute Value for garment operations. Essential for production planning and costing.

Line Efficiency

Calculate sewing line efficiency with all required IE fields: day production, SMV, manpower, working hours, and target/day.