3D Mobile Battery Drain Simulator

Active loads

Load level

Screen brightness 60%

CPU / background load 35%

Signal strength 70%

Battery

Capacity 4000 mAh

Time scale 30 sim-min / s

Battery

–

Total draw

–

Runtime left

–

Elapsed

–

How it works

Each source floating around the phone — screen panel, GPS satellite, radio tower and CPU chip — emits a stream of energy motes toward the battery cell whenever its load is active. The rate motes leave a source is driven directly by that source's real instantaneous current draw in milliamps, so a brighter screen or a heavier CPU load visibly thickens its stream. Underneath the visualization the same physical accounting as any battery gauge runs every frame: currents sum, and the sum drains the cell's real milliamp‑hour capacity over simulated time.

draw(mA) = base + screen(bright) + gps + radio(signal) + cpu(load)
radio(signal) = 90 + (100 − signal%)·2.2   ← weak signal costs more power
d(charge_mAh)/dt(h) = −draw(mA)

Signal strength — a real cellular-radio effect: the modem raises transmit power to hold a link when the signal is weak, so a poor connection can more than triple the radio's draw versus full bars.
Screen / CPU load — brightness and background-processing sliders scale their source's mote emission rate exactly as they scale its mA draw.
Battery cell — its height and color track state of charge in real time: green above 40%, amber down to 15%, red near empty, and it stops accepting motes once depleted.
Drag to orbit the phone; the mote streams make the otherwise invisible power budget spatial — the source with the fattest, fastest stream is the one worth turning off first to extend runtime.

Real-world relevance: signal-dependent radio power is why battery life visibly drops in weak-coverage areas even with identical screen-on time — the same effect this simulator lets you dial in directly.

Screen motes GPS motes Radio motes CPU motes

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