Updated on January 13, 2024


Created on October 3, 2018

Little Sun Original

Upcoming Update

Hand-held, portable solar powered lamp.

Developed By
  1. Little Sun
Tested By
  • Lighting Global
Content Partners


Product Description

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.

Target SDGs

SDG 7: Affordable and Clean Energy

Market Suggested Retail Price


Target Users (Target Impact Group)


Distributors / Implementing Organizations

Local select stores globally

Competitive Landscape

Direct competitors include Nokero N233 and Sun King Pro SK-301 Solar Lantern.

Manufacturing/Building Method

Mass produced

Intellectural Property Type


User Provision Model

Little Suns are sold at a higher price in higher-income areas of the world while the product is sold in off-grid areas at much lower, locally affordable prices. The lamps are available in Little Sun's Online Store (US and Europe only) and in select stores in all parts of the world.

Distributions to Date Status

661,578 as of 2018

Lamp type


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)


Power source

Solar Panel

Battery type

Lithium Iron Phosphate

Peak power rating (Wp)

0.5 Wp

Battery capacity (kWh; mAh)

400 mAh

Battery nominal voltage (V)

3.2 V

User replaceable battery (yes/no)


User replaceable light (yes/no)


Design Specifications

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)

Product Schematics

Technical Support

Available from the manufacturer.

Replacement Components

Available from the manufacturer.


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 SunFashion Theory, Vol 19, 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

Compliance with regulations

Little Sun Original has complied with the Lighting Global Quality Standards, and has been tested according to the Quality Test Method stipulated in the IEC 62257 - 9 -5 Standard.

Evaluation methods

Lighting Global Quality Standards

Other Information

Read more on the Quality Test Method stipulated in the IEC 62257 - 9 -5 Standard

Leave a Reply

Explore similar solutions


January 18, 2024

Sun King Eco

Read Solution

Implemented by

Sun King


January 18, 2024

Sun King Pro SK-301 Solar Lantern

Read Solution

Implemented by

Sun King


January 5, 2024

Little Sun Charge

Read Solution

Implemented by

Little Sun


January 14, 2024

Sun King Home 40Z

Read Solution

Implemented by

Sun King


January 15, 2024

Sun King Home 60

Read Solution

Implemented by

Sun King


January 10, 2024

Sun King Home 120

Read Solution

Implemented by

Sun King


January 18, 2024

Sun King Boom

Read Solution

Implemented by

Sun King


June 28, 2024

Sun Mobility Quick Interchange Station

Read Solution

Implemented by

Sun Mobility


December 27, 2023


Read Solution

Implemented by

Mono Pumps


January 17, 2024

Sun-Mar Excel NE Composting Toilet

Read Solution

Implemented by


All Solutions

Contribute to E4C's Library of Breakthrough Sustainable Development Technology Solutions

Suggest A Solution

Get more information about Solutions Library and its features.

Learn More

Have thoughts on how we can improve?

Give Us Feedback

Join a global community of changemakers.

Become A Member