Solar Gear Spot

12V shed lights

Size a simple solar setup for shed lights.

Enter light watts, nightly hours, backup days, battery voltage, and sun hours to estimate battery amp-hours and panel watts.

Quick result Run estimate

A few LED lights can work with a modest 12V battery and panel.

Inputs

Planning assumptions

Use this as a planning estimate

Small solar and backup-power estimates depend on real device draw, temperature, battery age, sun, shade, and product limits. Use the result to narrow a shopping range, then verify exact specs before buying.

Planning notes

What this calculator is checking

Battery

Amp-hours depend on voltage

A 20Ah battery at 12V stores a different amount of energy than 20Ah at another voltage.

Panel

Panel watts should refill the daily load

A panel only has to refill what you use, plus losses and reserve.

Related

Solar recharge time calculator

Check whether a panel can refill the battery within your usable sun window.

Open calculator