Power Budget Calculator

Calculate and Optimize IoT Device Power Consumption

IoT Power Budget Lab

Estimate battery life from component current, duty cycle, battery capacity, and regulator efficiency, then diagnose which design choice most limits the device.

Try

Set Battery Type to Li-SOCl2, Capacity to 2400 mAh, and Deep Sleep duty cycle to 99.50% before Calculate.

Observe

The average-current ring and battery-life estimate change together when Active time rises from 0.05%.

Explain

Calculate sums each component current multiplied by duty cycle, so persistent sleep leakage can outweigh rare peaks.

Legend. Each colour represents one component’s share of average current; the complete ring is the device average load.

Technical boundaries. Battery life is estimated from nominal capacity and deterministic component current times duty cycle. It does not model voltage conversion efficiency, battery discharge curves, temperature, self-discharge, pulse limits, radio retries, component tolerance, ageing, or harvested energy.

Goal

Build a defensible power budget from active, standby, and deep-sleep currents.

Try

Load a preset, change active time from 0.05%, then compare target life and peak-current risk.

Watch

Use average current, daily energy, top consumers, and what-if rows together.

Reflect

Would you optimize firmware duty cycle, component choice, or battery size first?

Guided Investigation

Start with Long-Life BLE Beacon and notice how tiny active time changes the result.
Switch to Asset Tracker and identify why GPS or radio use dominates.
Use the what-if table before changing components so your optimization has a reason.

Scenario Focus

Long-Life BLE Beacon is tuned to show how a small active window, deep sleep, and a coin cell interact.

Device Profile

Battery Type

Capacity (mAh)

Power Path Efficiency (%)

Target Life (days)

Components

Duty Cycle

Active

0.05%

Standby

0.45%

Deep Sleep

99.50%

Deep sleep is the remaining time after active and standby.

Active

0.05%

Standby

0.45%

Deep Sleep

99.50%

Battery Life Estimate

days

Avg Current

Peak Current

Design Score

Avg Power

INFO

Daily Energy

INFO

Target

Average Current Distribution

Design Diagnosis

Load a scenario to see the power budget diagnosis.

Top Consumers

Component	Average	Share

What-If Comparison

Change	Life	Meaning

Engineering Checks

Check	Current Signal	Status