Little Sun Original is a hand-held, portable solar lamp designed to charge during the day and be used at night. It is equipped with a dimmer to allow for users to adjust the brightness of the lamp to what you need. 5 hours of charging in the sun produces more than 50 hours of light at the dimmest setting or 4 hours of use at the brightest setting.
Distributors / Implementing Organizations
Local select stores globally.
Intellectural Property Type
User Provision Model
Distributions to Date Status
661,578 as of 2018.
Number of light points
Total light output (lumens)
Low: 2 lumens, high: 30 lumens
Multiple brightness settings (yes/no)
Light duration on single charge (hr)
Low: 50 hours, high: 4 hours
Mobile charging (yes/no)
Lithium Iron Phosphate
Peak power rating (Wp)
Battery capacity (kWh; mAh)
Battery nominal voltage (V)
User replaceable battery (yes/no)
User replaceable light (yes/no)
Lamp dimensions: Diameter 12 cm, depth 2,9 cm. Weight: 96 g. Solar panel: 60 by 60 mm monocrystalline silicon, 4.4V, 0.5W. Battery: AA LiFePO4, 3,2V rechargable battery with 400 mAh. LED: Samsung, Colour: 4500K, slightly yellow. Light output and duration: Charging Little Sun Original for a minimum of 5 hours in the sun gives you 4 hours bright light (25lm); or, use dimmer to get the most out of your Little Sun (up to 50 hours or more at lowest level, 2lm)
Battery has a lifespan of 5 years if used daily.
Manufacturer Specified Performance Parameters
Vetted Performance Status
Lighting Global has vetted the following performance parameters; 1. Truth in Advertising 2. Lumen Maintenance 3. AC-DC Charger Safety 4. Battery Composition, Battery Protection, Battery Durability. 5. Physical Ingress Protection 6. Water Ingress Protection 7. Drop Test 8. Soldering and Electronics Workmanship 9. Mechanical Durability 10. Minimum Warranty Terms 11. Performance Reporting
Follow proper electrical installation and control guidelines.
Complementary Technical Systems
Academic Research and References
Marc J, Olafur E et al (2015) Citing the Sun, Fashion Theory. Volume 19, Issue 3, pp. 315-330
Natalia S, Justyna M. P (2016) The Review of the Selected Challenges for an Incorporation of Daylight Assessment Methods into Urban Planning in Poland, World Multidisciplinary Civil Engineering-Architecture-Urban Planning Symposium 2016 (WMCAUS 2016)
Compliance with regulations