Engineering tool

Size a solar lighting system in under a minute.

Enter the load profile, days of autonomy and site conditions. We'll calculate the battery capacity and PV panel wattage you need — using the same conservative engineering rules Magnitech applies on every project.

1 · Nightly load

Step 1 — choose the method you want to use to calculate the night-time load, then fill in the details below.

Hourly profile — split the night into time bands with wattage and dimming for each.

FromToWattageDim %

Fromhh

Tohh

WattsW

Dim%

Fromhh

Tohh

WattsW

Dim%

Fromhh

Tohh

WattsW

Dim%

Total scheduled: 11.0 h per night. Bands wrap past midnight automatically.

Energy / night

312 Wh

Avg load

28.4 W

Hours scheduled

11.0 h

2 · System & site

Battery chemistry assumed LiFePO4. Adjust for your site and design margins.

Site location (optional)Auto-sets PSH

144+ cities available. Pick one to auto-set Peak Sun Hours — or type the value manually below.

System voltage

Days of autonomydays

Peak sun hoursh/day

Depth of discharge%

How much of the battery's capacity you use each cycle. Lower = longer life. 80% is typical for LiFePO4.

System losses%

Combined wiring, controller and battery round-trip losses. 20% is a safe default for off-grid LED systems.

Recharge margin%

Extra solar headroom so the battery can recover after a cloudy stretch. 25% upsizes the panel to put back 1.25× the nightly load on an average day.

3 · Project details

Optional — used for the printed specification sheet.

Project name

Site / location

Reference / quote #

Recommended specification

Live

Battery — nominal

86 Ah

68 Ah usable @ 12 V

Solar panel

103 Wp

≈ 8.6 A peak charge current

Nightly load

312 Wh

Autonomy

2.0 days

Total stored energy required

624 Wh

Peak sun hours

5.0 h/day

System voltage

12 V

DoD used

80 %

Suggested Magnitech fixtures

Economical option

MAGSOL AIOS 80

View product →

All-in-one integrated luminaire — panel, battery and LED in a single housing. Fastest install, fewer components, ideal for streets, perimeter and pathway lighting.

Output: 80 W · 15,680 lmBattery: 655 WhPanel: 105 WpMount: 5–7 m

MAGSOL PRO split solar luminaire with separate panel

Holistic option

MAGSOL PRO 60

View product →

Two-piece split system with a separately mounted solar panel and a larger battery housed beneath the panel. Better autonomy, higher mounting heights, and panel orientation optimised independently of the light.

Output: 60 W · 11,760 lmBattery: 922 WhPanel: 195 WpMount: 6–7 m

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MAGNITECH

Solar Lighting Specification Sheet

06 August 2026

Recommended specification

Battery — nominal capacity	86 Ah @ 12 V
Battery — usable capacity	68 Ah (DoD 80%)
Solar panel	103 Wp
Peak charge current	8.6 A

Suggested Magnitech fixtures

Economical option

MAGSOL AIOS 80

All-in-one integrated luminaire — panel, battery and LED in a single housing. Fastest install, fewer components, ideal for streets, perimeter and pathway lighting.

Output	80 W · 15,680 lm
Battery	655 Wh
Panel	105 Wp
Mounting	5–7 m

https://www.magnitech.co.za/products-magsol-aios

Holistic option

MAGSOL PRO 60

Output	60 W · 11,760 lm
Battery	922 Wh
Panel	195 Wp
Mounting	6–7 m

https://www.magnitech.co.za/products-magsol-pro

Load profile

Energy per night	312 Wh
Average load	28.4 W
Input mode	hourly

Design assumptions

Battery chemistry	LiFePO4
Days of autonomy	2.0 days
Total stored energy required	624 Wh
Peak sun hours	5.0 h/day
System losses	20 %
Recharge margin	25 %
Temperature derate	95 %

This specification is an engineering starting point produced by the Magnitech Solar Lighting Configurator. Final designs should consider site-specific shading, panel orientation and tilt, latitude, ambient temperature extremes, cable losses and local standards. Contact Magnitech for a fully engineered solution.