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Solar Battery Runtime

Estimate battery runtime from capacity, voltage, load, and efficiency.

Safety first, always.

ElectroLab AI teaches theory, low-voltage electronics, and planning concepts. Mains voltage, switchboards, fixed wiring, high-current systems, and legal electrical work must only be performed by licensed electricians where required.

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Visual schematic

Solar charger flow

Panel energy passes through charge control before the battery and protected 5 V output.

Low-voltage model

TP1: panel volts

TP2: battery volts

TP3: USB output

Diagrams are simplified learning models for low-voltage electronics. They are not wiring instructions for mains, switchboards, fixed wiring, or legal electrical work.

Battery capacity

Battery voltage

Load

System efficiency

Formula notes

hours = Ah x V x efficiency / load W

Battery chemistry, depth of discharge, temperature, and inverter losses can change the result a lot.

Visual formula bench

Solar runtime view

Runtime improves with more usable battery capacity and falls as the load current rises.

Live result

Check the inputs

1. Estimate

Load the example or enter a real low-voltage learning value.

2. Visualise

Use the diagram to connect the formula to current path, timing, frequency, or energy flow.

3. Verify safely

Build only suitable low-voltage circuits and confirm with a meter before scaling up.