Fenix's UC35 v.2 Rechargeable LED Flashlight is small enough for a backup light, but powerful enough to be used as a professional's primary everyday carry illumination tool. Featuring five output levels from the ultra-low 1-lumen economy moonlight to a darkness-piercing 1000-lumen turbo mode, its wide output range and high-intensity signal/emergency strobe make it ideally suited for virtually any situation around the house, in camp, or on the job. A two-stage tactical tailcap switch lets you choose from momentary or constant-on activation, and a mode selector switch on the body gives you access to the brightness levels and strobe mode. The switch remembers the last output selected and automatically goes to that level the next time it's turned on.

The UC35's housing is made of light and durable aluminum with a Type III hard-anodized finish. It is impact resistant to 3.3' and IP68-rated to be submersible to 6.6' and dustproof. An integrated micro-USB charging port next to the mode switch charges the included 18650 battery in the light, and while charging the mode switch pulls double-duty as a charging/charged indicator. When the battery level gets depleted, the switch also blinks to warn you to recharge the battery. Reverse-polarity protection prevents damage to the light if the battery is put in wrong, and overheat protection automatically drops the output if the light gets too hot.

1 / 50 / 150 / 350 / 1000 Lumens    Cree XP-L HI V3 LED Emitter    1000-Lumen Signal/Emergency Strobe    Tailcap On/Off Switch, Body Mode Switch    Intelligent "Last Output" Memory Switch    Type III Hard-Anodized Aluminum Body    Dustproof, Waterproof, Impact-Resistant    Overheat and Reverse-Polarity Protection    Low-Voltage Warning Indicator    Integrated Micro-USB Charging Port

• Ultra-low 1 lumen economy moonlight output maximizes battery life
• Low 50 lumens output makes tasks like reading easy
• Medium 150 lumens provides enough light to illuminate a room or tent
• 350-lumen high output lets you perform tasks such as cooking and setting up camp without straining your eyes
• Darkness-piercing 1000-lumen turbo mode will light the trail fare ahead of you or disperse deep shadows during searches
• Cree XP-L HI V3 LED emitter
• 1000-lumen signal/disorientating strobe mode

• Tactical tailcap push-button switch
• Mode selector switch on body behind head
• Press tailcap for momentary activation, click for constant-on
• Press mode switch to cycle through moonlight to turbo outputs
• Press and hold for 1 second to activate strobe mode
• Intelligent switch remembers last output intensity used

• Lightweight and durable aluminum housing
• Corrosion and scratch-resistant Type III anodized finish
• Anti-reflection coated tempered emitter window
• Impact resistant to 3.3' and IP68-rated submersible to 6.6' for up to 30 minutes and dustproof
• Body clip, lanyard, holster included

• Runs on one included 18650 Li-ion battery or two user-supplied CR123 disposable lithium batteries
• Digitally regulated output maintains consistent beam intensity throughout life of battery
• Charging/charged and low-voltage indicators (not available when using CR123 batteries)
• Overcharge, reverse polarity, and overheat protection prevents damage to light
• 18650 battery charges in the light for added convenience using the included micro-USB charging cable

Related Questions and Answers

Q: 1. Will it run at 2000 lumens until the batteries are depleted? Or does it throttle down (by how much) to keep the COB LED cool?

A: The Fenix Flashlight CL28R Rechargeable Lantern BH #FECL28R has both over heat mode and low voltage mode than can cause a cu tin output.

Q: 2. Will this work in the Nucleus-M hand control?

A: The Nucleus-M hand control can be powered by the Fenix Flashlight 18650 Rechargeable Lithium-Ion Battery (3.6V, 2600mAh).

Q: 3. Can it fit a 1 inch wide by 3 inch long battery

A: The Fenix Flashlight ARE-D1 Battery Charger is compatible with the following batteries: Compatible Rechargeable Li-ion Batteries 18650 16340 14500 21700 26650 10440 Compatible NI-MH/NI-CD Batteries AAA AA C

Q: 4. The overview says “ built-in 21700” battery. Does that mean it can’t be replaced with a standard protected 21700 battery when needed?

A: Unfortunately, the battery is not user replaceable.

Q: 5. Is this the upgraded (2-stage button) model?

A: Yes, Nitecore E4K Rechargeable LED Flashlight is the next generation 21700 compact EDC flashlight. Has 5 brigthness level ( ULTRALOW, LOW, MID, HIGH TURBO) and 3 special mode (STROBE, SOS, BALISE) to cycle through.

Q: 6. Can I use this on Crane Lab 3?

A: You could use three of these or you could use the Zhiyun-Tech battery kit https://bhpho.to/2YpuApb.

Q: 7. What is the continuous amperage rating for this battery

A: The manufacture has listed that the battery capacity is 2600 mAh. And it is 3.7 volt.

Q: 8. Can I use this for a Luna Optics DB60 HD binocular?

A: Yes, the 18650 batteries are compatible with this bi-ocular.

Q: 9. Can this be used in place of a 18650 (3500mAh)?

A: The Fenix Flashlight 21700 Rechargeable Li-Ion Battery (3.6V, 5000mAh) can not be used in place of a 18650

Q: 10. Is this battery a suitable substitute for the 18650 battery? Can it be used in items already using the 18650 battery?

A: No, it is larger and may or may not fit in your devices.