Updated on January 5, 2024


Created on October 5, 2018

Little Sun Charge

Upcoming Update

Little Sun Charge is a small and portable solar charging station designed to power handheld devices and its integrated LED light.

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


Product Description

Launched in 2016, Little Sun Charge is a lightweight, easily portable handheld solar charger primary designed to charge mobile phones and other small USB-powered devices, such as MP3 players, cameras and e-readers. The product has an integrated solar lamp with three brightness levels and on a clear sunny day, a full charging during 7,5 hours offers 14 hours of bright light (75 lm), 45 hours at 25 lm, and over 150 hours at the lowest level (8 lm).

This device is engineered and manufactured by LittleSun GmbH in Berlin, Germany.

Target SDGs

SDG 7: Affordable and Clean Energy

SDG 3: Good Health and Well-Being

Market Suggested Retail Price


Target Users (Target Impact Group)


Distributors / Implementing Organizations

LittleSun GmbH in collaboration with its retail partners worldwide. LittleSun has extended its special pricing scheme to qualified humanitarian organisations working on refugee camps.

Competitive Landscape

Direct competitors include Little Sun Original.

Manufacturing/Building Method

The product is manufactured by LittleSun GmbH in Berlin, Germany and shipped to its partners or local stores worldwide.

Intellectural Property Type


User Provision Model

Users can get it from the manufacturer by purchase online and by LittleSun's local stores.

Distributions to Date Status

There is no specific information about this product, however, for December 2017 LittleSun had distributed over 661,578 lamps worldwide, including their three models: Little Sun Diamond, Little Sun original and Little Sun Charger.

Power rating (W or kW)


System dimensions (m)

0.14 x 0.14 m

Battery type

Lithium iron phosphate (LiFePO4) battery (2 V, 4400 mAh)

Battery capacity (mAh)

4400 mAh

Description of solar panels

1 pcs, 2.5 W Monocrystalline Panel

Grid compatibility (yes/no)


Description of mobility

Yes, easily portable with its lanyard and carabiner hook and lightweight (324 g)

Design Specifications

Design specifications include the weather and UV resistant body with an integrated monocrystalline solar panel (131 x 131 mm, 2,5 Wp, 4,4 V), a rechargeable Lithium iron phosphate battery (4400 mAh, 2V) and a LED light with 3 brightness settings (75 lm, 25 lm, 8 lm). It features a simple an intuitive bottom to check the charge level and activate the lamp within the 3 brightness options. This device's dimensions are 14 x 14 x 2,5 cm, it weighs 324 g and includes a handy lanyard and a carabiner hook that makes it easily portable.

Product Schematics

Technical Support

User guide available and video on how to use the product. Contact the manufacturer.

Replacement Components



This product has a 2-year warranty from the date of purchase covering defects in workmanship and materials under normal use. The inbuilt battery has a lifecycle of 5 years when used daily.

Manufacturer Specified Performance Parameters

LittleSun's main goal is to ensure energy access worldwide with the design and distribution of solar-powered solutions that have a positive impact in environmental sustainability and health (with the reduction of CO2 emissions), in local economies, and in gender equality. LittleSun has the commitment to provide solar lamps to children in off-grid locations for reading and homework purposes and solar-devices to charge mobile phones. They are also striving to provide better personal safety to women and girls after dark and with a special focus on refugee camps.

Vetted Performance Status

Little Sun Charge requires 7.5 hours to fully charge. A fully charged device gives 14 hours of bright light (75 lm), 45 lightning hours at 25 lm and over 150 hours at lowest brightness level with 8 lm. This LED light has an optical efficiency of 167 lm/W at 5000 K (cool white).


There are no potential hazard or risks related to the use of this product.

Complementary Technical Systems

LittleSun GmbH also commercializes an on-stand, an extra and optional accessory that converts the Charge to a desk lamp, which costs 10 USD.

Academic Research and References


Compliance with regulations

LittleSun GmbH is a certified B corporation. All their products are ROHS and ISO-certified for quality and consistency in production standards.

Evaluation methods


Other Information

Little Sun was honoured with the 2018 Billion Acts Hero Award in the Best Social Enterprise category that took place in Monaco. In April 2014, Little Sun received 5 million USD impact investment loan from Bloomberg Philanthropies, what is making it possible to scale up Little Sun’s operations across the African continent. Read more on Little sun Charge stories here Littlesun products can be purchased here Little Sun Technical Specifications Video on how to use littlesun charge

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