What is the life expectancy of the LEDs?

The LEDs we use boast an almost unlimited life expectancy. Therefore, it rather makes sense to look at how the luminance decreases over time. Our long-term tests indicate that the LEDs lose merely about 10% of their luminance after 2 years of PERMANENT operation (17,500 hours). To make it short: Life expectancy is no longer an issue!


Which LEDs do Gloworm use in its lights?

Gloworm utilises CREE LEDs – Cree is the market-leading innovator of lighting-class LEDs. Currently we only use the XML2 LEDs and XPG2 LEDS in the CX Urban lights.

Are our lamps waterproof?

The Gloworm X series lights are designed to an IP67 rating. This means they can be submersed but it is not recommended. The CX series is designed to an IP65 rating which means they are dust tight and can be used in rainy conditions.


How often can I recharge a lithium-ion battery pack, what is the life expectancy?

The life of a battery pack depends on different factors. On the cell type, on how much it is used and on how it is treated. In general, a life of 300-400 charging/discharging cycles can be assumed before the battery’s capacity decreases significantly (80% of the nominal value). This corresponds to a minimum period of use of approximately 2-3 years if the battery is used twice a week. With careful storage when the battery is not in use, a life of 2-3 years is realistic.


My battery won't charge any more. What might be the cause and what can I do?

In many cases, the battery and the charger are in perfect condition, merely the battery protection has been triggered. To solve this, simply leave the battery connected to the plugged in charger and after a while (NB: it may take up to two hours) the battery will charge again.


How do I store a lithium-ion battery for several months?

Charge the battery ideally to 50-75% and keep the battery in a cool dry place for no longer than 3 months. Temperatures below 15°C are favourable. The fridge in an airtight container is a good option. Extreme example: Storage of a fully charged lithium-ion battery at 30°C (direct sunlight) irreversibly damages the battery – it may even fail completely.


I used the lithium-ion battery only for a short time. Should I charge it again immediately?

Or rather use it again and discharge it? If you expect your next use to be no longer than the remaining capacity will last, do not charge the battery immediately. The life of a lithium-ion battery is also determined by the number of charging cycles. Each charging cycle, even the shortest, is recognized by the battery as such; therefore, rather avoid charging the battery unless it is really necessary.


May I also operate the lamp without a cooling wind?

Yes, without limitations. All our lights are absolutely heat-proof. Caution! Please be aware the enclosure will heat up during use, however this is completely normal so please take care when handling in order to prevent injury.


Can I use Gloworm LED Light Systems for activities other than Mountain Biking?

Absolutely! Whatever your passion is, be it riding, running, caving or adventure sport racing, Gloworm will be there to light up all your adventures!


Warranty and Returns

How long is the warranty period on Gloworm Products?

The warranty on all Gloworm lights (Head) is 24 months and 12 months on all Gloworm battery packs and accessories.


What do I do if my lamp needs to be repaired?

Please return the entire lamp set including the battery pack and charger to your local DEALER. Also remember to include a brief description of the error and your telephone number and/or e-mail address. If you are unable to locate a dealer nearby, please contact us HERE and our Customer Service team will help you out.

Manuals and downloads: