9,050 Lumens. 115 Grams.

Yes — and this is the lamp where the weight question matters most. 115 grams is the entire electronics package: full aluminum housing, Cree LED array, multi-lens optical system, PCB, and the IP67-rated USB-C port. That's the lightest super-strong lamp head on the market at this output level.

The reason it's that light is that we moved the heavy part — the four 21700 cells — off the head and into a separate 380-gram pack you keep in your pocket, your vest, or on your hip. For an off-piste descent, a 3-hour enduro stage, or a snowmobile day in deep cold, that means no neck fatigue, no bouncing on rough terrain, and a lamp that still delivers 9,050 real lumens when you point it where you're going.

Because we'd rather under-promise than join the industry's inflation race. The lamp is rated 8,500 lumens on the box. When we sphere-tested production units, the measured output came in at 9,050 lumens — at operating temperature, held.

Most of the industry does the opposite: print the highest 30-second peak the lamp will ever hit, knowing the real number on the trail is a fraction of it. We print the conservative number and let the measurement speak. The box says 8,500. You get 9,050.

Yes — that's one of the reasons the battery is external. With a 115-gram lamp head and the 380-gram pack worn in a vest pocket, hip belt, jacket pocket, or backpack, weight distribution stays low and centered. There's nothing heavy bouncing on the front of your head on rough descents or fast technical sections.

The 1.5 m command cable shipped as standard is specifically built for this — long enough to put the pack in a backpack while the lamp sits on your helmet, or inside your jacket while the lamp rides on a snowmobile lid. The click-release on both ends of the cable means you can swap mounting positions in seconds without tools.

Wide flood with extended throw — not a tunnel-vision spot, not a soft wash. The multi-lens optical system spreads 9,050 lumens across a beam shape that delivers daylight-level visibility close in, with enough reach to read terrain at speed.

This matters at this output level. A pure spot at 9,050 lumens would burn out the centre of your vision and leave the edges dark. A pure flood would waste power on terrain you don't care about. The multi-lens approach gives you both: the foreground lit evenly for technical reading, and the throw to see what's coming up on a fast descent or a snowmobile run on open terrain.

Operating range is −25°C to +60°C. The full aluminum housing handles cold without issue — the question is the battery.

Lithium cells lose capacity below roughly −10°C, which is true of every battery on the market. The difference with the STORM 8500 is that the battery pack is external and the standard cable is 1.5 m. In deep cold you keep the pack inside your jacket or in a vest pocket where your body heat keeps the cells warm and the lumens where they should be. The lamp head sits on your helmet or headband; the pack stays warm; you get the rated 9,050 lumens instead of a derated number you didn't expect.

This is the practical reason the lamp head and battery are separate at this output level. It's not a design choice — it's how a 9,050-lumen headlamp works honestly in real winter conditions.

Same hardware platform, same optics, same battery, same runtime. The differences are the headband colour and the warranty framework. STORM comes with a black headband with yellow Stormlight branding and a 2-year international consumer warranty. PRO uses a different headband and operates under a separate warranty structure designed for professional and commercial use.

Pick STORM for personal sport, recreation, racing, and adventure. Pick PRO if the lamp is a tool you depend on for paid work — SAR, snowmobile guiding, ski patrol, professional fleet use.

The biggest difference is what the lumen number actually means. Most flagship headlamps at this price point are rated to ANSI/PLATO FL1 — the headlamp industry's measurement standard. FL1 measures output between 30 seconds and 2 minutes after activation, and defines runtime as the time until output drops to 10% of that initial reading.

That sounds reasonable until you understand what it allows. A high-output LED hasn't yet thermally throttled at the 30-second mark — it's still drawing peak current before the heat catches up. So a lamp can claim 5,000 lumens and an 8-hour runtime, while in practice it delivers 5,000 lumens for the first few minutes, drops to 30–50% within the first half hour, and spends most of the rated runtime delivering a fraction of the headline number. Technically compliant. Practically misleading.

We don't measure that way. Our 9,050 lumens is the output the lamp delivers at operating temperature — once the LEDs have stabilized and thermal management is in steady state — and it's the output we sustain across 1 hour of continuous active use on full power. Same for every other mode. The number you read on the box is the conservative version: it says 8,500, and the lamp delivers more.

The other concrete differences:

Repairability. Every part is user-replaceable — the cable, the battery pack, the LED, the optics, the headband. No soldering, no proprietary screws, no service centre. Ten-year part availability on every model we ship.

External battery on a clean platform. Click-release on both ends, GoPro-compatible feet, command cable as a separate user-replaceable part. The lamp grows with your gear instead of being locked to one configuration.

You can find lamps with bigger headline numbers for less money. We don't compete on that. We compete on what those numbers actually deliver in your hand at −15°C three hours into a stage.

Material and manufacturing defects under normal use, anywhere in the world. If something fails because of how it was made or what it was made of, we replace or repair it — one form, one conversation, one shipment.

The warranty doesn't cover physical damage from drops, crashes, or impact, or wear on consumable parts like the headband. For those, we offer the Repair Service: every part is replaceable, often for less than the cost of a new lamp.

Read the full warranty →

Email us with what's wrong. We send you the replacement part with simple instructions. Most repairs are user-completable in under five minutes — click-release means no tools.

If the failure is something you don't want to handle yourself, you ship the lamp to us and we handle it. No service-centre network, no authorised repair shops. One channel, direct.

Parts are guaranteed available for ten years from the model's launch. More about repair →

Yes. The lamp head has GoPro-compatible feet built in, so any standard GoPro mount — ski helmet adapter, MX helmet bracket, snowmobile lid mount, handlebar mount, chest rig — works out of the box.

For mounting on our own click-release system, we use a four-tab connection (the GoPro standard uses two prongs). Both work. The four-tab keeps holding the day one tab breaks, which is the practical reason we engineered it that way for a 115-gram lamp head taking real impact on technical descents and motocross stages.

Dedicated MX-helmet brackets, snowmobile-lid mounts, and handlebar adapters are coming this autumn.

Yes, in carry-on. The 6,000 mAh / 14.8V pack works out to 88.8 Wh, under the 100 Wh limit for lithium-ion batteries in cabin baggage on every major airline. Always pack it in your carry-on, never in checked luggage — that's the rule for any lithium battery, not specific to ours.

One note: most airlines limit you to two spare lithium-ion batteries between 100–160 Wh, but rules below 100 Wh are more relaxed. The STORM 8500 pack sits comfortably in the relaxed zone, but if you're travelling with multiple battery packs, check your airline's specific policy in advance.

Worldwide air shipping from Hong Kong, 2–7 days to most destinations. All duties and import taxes are included in the price you see at checkout — nothing extra to pay on delivery.

14-day return window from the day the lamp arrives. If something's wrong or it's not what you expected, ship it back and we refund in full.