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Specific questions about our lights.

Last updated on 23 Oct, 2025

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Are Your Lights Waterproof?

They sure are! I wouldn't take them scuba diving, but they'll handle any muddy, sloppy, wet trails and driving rain you drag them through, no problem.

Why don't you make an 8,000 lumen light?!?

What is Pass-Thru Charging?

How do I extend runtime with a external USB power bank?

Plug a USB power bank into the light from the start of the ride and it will charge while you go, giving you much more runtime when you need it, read on for more specific details.

Are the internal batteries user-serviceable/replaceable?

How should I store my light in the offseason?

You mean if you have an off-season, eh? Just top off the charge and keep them indoors, easy enough!

I charged my light overnight and it's not full, why?

Entirely depends on your USB charger's specifications... (read more)

How much is runtime impacted by cold weather?

Can I use mountain bike lights on the road or will they blind traffic?

The answer, like anything, is: yes, but there are compromises...I'll explain...

Can I hook this light up directly to my eBike battery?

Short answer: for now, only if your eBike has a USB output...

Can I leave my light on the charger forever?

Yep! There is no way to mis-charge your light, more detail here...

Will any USB Charger work? What about PD?

Short answer: yes, some faster than others, more detail here...

Can I run these lights off a dynamo hub?

TLDR: if it has a USB output, you can pass-thru charge, more detail below...

Do these lights have a lockout mode?

They do not for a multitude of reasons, read more here...

My light is getting really hot, is there something wrong?

Nope, all LED lights produce heat, we have thermal safety controls, how hot it gets just depends on how you're using it, I'll explain...

Can I fly with your lights?

Yes! The only flight restrictions are for UNprotected Li-Ion cells, and all our products have protection circuits, so you can bring all our lights in checked bags or carry-ons with no restrictions.

What are the best charging practices to make my lights last?

Keep 'em charged and indoors when not in use, simply put. More specifics below...

If I just get one light for MTB, which should I get? Helmet or Handlebar?

TLDR: totally depends on your use case, I'll elaborate...

How do I choose which light is best for me?

Completely depends on your specific use case and type of riding, here's a guide to get started.

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