Go 250

Product Description

The Go 250 is a pico-solar lantern with a maximum output of 120 lumens, brightness control, and the ability to charge a mobile phone. Once fully charged by the sun, the lantern can run for 5 hours on its brightest setting, to 60 hours on its dimmest setting (three brightness settings in total). The lantern meets the requirements of the Lighting Global Minimum Quality Standards and is additionally certified by VeraSol, a leader in pico-solar products. It additionally comes with a 4 W plug-and-play solar panel to charge the device.

Target SDGs

SDG 7: Affordable and Clean Energy

Market Suggested Retail Price

$35.00

Target Users (Target Impact Group)

Household, Community

Distributors / Implementing Organizations

Barefoot Power

Competitive Landscape

Direct competitors include d.Light S30, Sun King Boom, Enviro SL36, and SM100.

Manufacturing/Building Method

Built by the manufacturer. PCB designed in-house, plastic molding used for the main unit, all assembled by Barefoot power. ^{Interview with manufacturer}

Intellectural Property Type

Trademark

User Provision Model

The user can buy the product from one of the country's distributors. ^{Interview with manufacturer}

Distributions to Date Status

35,000 units from 2019-2021. Interview with manufacturer

Lamp type

LED

Number of light points

Total light output (lumens)

120 lumens

Multiple brightness settings (yes/no)

Yes

Light duration on single charge (hr)

5-60 hrs

Mobile charging (yes/no)

Yes

Power source

Solar Panel

Battery type

LiFePO4

Peak power rating (Wp)

4.1 W

Battery capacity (kWh; mAh)

3.3 Ah

Battery nominal voltage (V)

3.2 V

User replaceable battery (yes/no)

User replaceable light (yes/no)

Design Specifications

The product has an onboard lithium-ion battery that is charged during the day through the sun by its included solar panel. The stored power is then used to illuminate the light as well as charge any small devices through a USB cable.

Product Schematics

Technical Support

Contact Barefoot Power - info@barefootpower.com

Replacement Components

The manufacturer carries spare parts. ^{Interview with manufacturer}

Lifecycle

3-5 years. ^{Interview with manufacturer}

Manufacturer Specified Performance Parameters

The manufacturer specified performance targets include being portable, lighting a large area with bright light, the ability to charge devices, and is suitable for rural markets.

Vetted Performance Status

Performance metrics have been verified by VeraSol, the world’s largest pico-solar certifying organization.

Safety

Users must take reasonable precautions when charging the device.

Complementary Technical Systems

None

Academic Research and References

No academic sources.

Quality Standards. n.d. VeraSol.

Previously Certified Products. n.d. VeraSol.

Compliance with regulations

Meets the Lighting Global Minimum Quality Standards