Fenix HM51R Ruby Headlamp Parameters
- Uses a premium high-performance Cree XP-G3 LED with a neutral light tint (4500 K) and a lifespan of 50,000 hours, along with two red Everlight LEDs.
- Four white light modes: 500 lumens (1.3 hours) -> 150 lumens (2.8 hours) -> 30 lumens (13.3 hours) -> 3 lumens (110 hours)
- Three red light modes: 4 lumens (30 hours) -> red flashing 4 lumens -> SOS
- Measured with a Li-ion Fenix RCR123A battery with a capacity of 700 mAh (included).
- Powered by one Li-ion RCR123A / 16340 battery or one disposable CR123A battery.
- Overheat protection: operation at the highest mode is limited to 5 minutes continuously, after which the flashlight automatically reduces output to 200 lumens.
- Digitally regulated constant output.
- Charging via micro-USB 5V/1A.
- Smooth light beam with a range of up to 85 meters (1800 cd)
- 70 mm length x 33 mm width x 28 mm height (including headlamp mount).
- 77 grams (including strap and battery), 60 grams (without battery).
- Battery capacity indication and low voltage warning.
- The flashlight has a memory and will always turn on in the last set mode (applies to both white and red light).
- Magnetic tail, allowing the headlamp to be attached to any iron surface.
- Protection against reverse battery insertion (polarity reversal).
- Comfortable strap with reflective elements.
- Simple operation with one switch.
- Body made from high-strength aircraft-grade aluminum alloy.
- Durable hard-anodized finish - Type III.
- Impact-resistant, dustproof, and waterproof according to IP68 standard.
- High-quality TIR optics with high light transmission.
- Package includes HM51R headlamp, ARB-L16-700 battery, spare o-ring, spare rubber charging port cover, charging USB cable.
- A case Fenix APB-20 can be purchased separately for the headlamp.
Usage
A black insulating cover may be present on the battery inside the flashlight from the factory. Before first use, remove it from the battery.
- The headlamp will turn on in the last used white light mode by holding the button for 0.5 seconds.
- The headlamp will turn on in the last used red light mode by double-clicking the button quickly.
- The headlamp will turn off by holding the button for 0.5 seconds.
If the headlamp is on, you can cycle through the performance modes by short presses of the button in the order of 3 - 30 - 150 - 500 lumens (when turned on in white light) or red - red flashing - red SOS (when turned on in red light). The flashlight has a memory and will always turn on in the last set mode (applies to both white and red light).
Battery charge status indication: After a short press of the button (the headlamp must be off), the LED indicator in the button is activated. If the indicator light is green, the battery is charged to more than 85%. Green flashing indicates 50-85% capacity. If it lights up red, it is charged to 25-50%. Red flashing indicates that less than 25% of the battery capacity remains. The indication works correctly only with rechargeable RCR123A / 16340 batteries.
Charging: Open the rubber cover of the charging port and connect the included cable to the flashlight (micro-USB connector), connect the other end of the cable to a computer, power bank, or USB adapter for the electrical network or car (not included). During charging, the side button lights up red and turns green when fully charged. After charging, seal the charging port again with the rubber cover. Charging a fully discharged battery takes about 1.5 hours. In an emergency, the flashlight can be used during charging, but only the lowest white mode will be available.
Low battery warning: If the battery voltage drops below the set level, the headlamp will automatically switch to lower performance modes. If the headlamp is already switched to the lowest performance mode and the battery is critically low, the indicator in the button will light up red and flash every 3 seconds. However, the headlamp will continue to light until the battery is completely discharged. Note: The low battery warning is calibrated only for the voltage of rechargeable Li-ion batteries.
Product Reviews
- Ultramarathoner René Kujan discusses the key features of the Fenix HM51R headlamp in his review on sport.cz.
- A review on svetoutdooru.cz highlights the versatility and durability of the Fenix HM51R headlamp.
- "Although it is no larger than a finger, it hides a burst output of 500 lumens, red illumination, and electronics for battery charging. It weighs 77 grams, you'll pause at its all-metal construction, and when it comes to the strap, it's much more airy than any you've seen before," poetically and technically precisely reviews Milan Gigel on prakticky.sk.
- "Choosing a true champion among the current offer of headlamps is definitely not easy. The offer is diverse, and the features of individual models vary greatly. But I finally found one that is brilliantly refined - it's the Fenix HM51R Ruby flashlight," praises Jiří Louthan for all the possibilities the headlamp offers in casenaryby.cz.
- The popular running server rungo.cz appreciates not only the great performance-to-weight ratio of the Fenix HM51R headlamp.
- A review on trailhunter.cz evaluates the Fenix HM51R headlamp from a cycling perspective.
Warnings
- Do not disassemble the sealed part in the head of the flashlight yourself, as this will void the warranty.
- If using a disposable CR123A battery, do not attempt to charge it in the flashlight.
- If the protective rubber rings appear damaged after prolonged use, replace them. The rings should also be lubricated to prevent rubber erosion. By following these rules, the flashlight will be properly protected against water.
- If the flashlight blinks, does not switch to higher performance modes, or does not light up, it may be due to one of the following reasons:
- The battery is almost discharged – recharge or replace it.
- The contacts inside the flashlight are dirty – clean them with a cotton swab dipped in alcohol.
- The rear part of the flashlight is loose – tighten it.
Warranty
Five-year warranty on the flashlight, two-year warranty on the battery.
