solar · 2026-04-15
BioLite SunLight 100
The best portable solar lantern we've tested. Exceptional build, reliable output, and a clever integrated panel.
What we liked
- Excellent build quality
- Integrated solar panel
- Consistent 100-lumen output
- IPX4 water resistance
What could improve
- Limited to 100 lumens max
- No USB-C charging
- Clip mechanism could be sturdier
BioLite has been making camp-grade solar products for over a decade. The SunLight 100 is their latest compact lantern — and after six weeks of daily testing, it's our top pick for portable solar lighting.
Design & Build
The SunLight 100 features a durable polycarbonate body with an integrated sundial-style solar panel. At just 100g, it's lighter than most smartphones. The frosted diffuser produces a warm, even glow without harsh spots.
Performance
We measured a consistent 98-105 lumens across the high setting, with a runtime of 12 hours on low (50 lumens). A full solar charge takes approximately 7 hours in direct sunlight. The integrated panel maintains roughly 80% efficiency even at 45-degree angles.
Verdict
For backpackers, campers, and anyone who wants reliable solar light in a pocketable form factor, the BioLite SunLight 100 is hard to beat. The build quality justifies the £35 price point, and the integrated panel means you never need to remember a cable.
Frequently Asked Questions
Based on our testing, the BioLite SunLight 100 scored 9.2/10. The best portable solar lantern we've tested. Exceptional build, reliable output, and a clever integrated panel.
The main limitations we found: Limited to 100 lumens max. No USB-C charging. Clip mechanism could be sturdier. Despite these, the overall performance remains strong for its category.
In the solar category, this product stands out for: Excellent build quality. Check our comparison pages for detailed head-to-head matchups.