Fenix Flashlights

Fenix builds durable, high-output flashlights known for reliable electronics, smart thermal control, and practical interfaces. If you need a light that survives rough weather, resists impact, and maintains steady brightness instead of rapidly dimming, Fenix is a strong choice.

What Stands Out

• Durability: Aluminum bodies with hard-anodized finish; most models are IP68 (dustproof, submersible to 2 m for 30 minutes) and withstand drops.
• Regulated output: Drivers keep brightness stable as the battery drains, then step down for safety and runtime.
• Convenient power: USB‑C charging on many models; common cells like 18650 or 21700 for longer runtime.
• Usable UI: Tail or side switches, momentary-on, quick access to turbo or strobe on tactical models.
• Beam options: Flooded EDC beams for close work or higher-candela “throwers” for distance.

Who It’s For

• Choose Fenix if you need a duty-rated or outdoor-ready light with predictable output and weather resistance.
• Avoid high‑turbo “showpiece” lights if you need long, steady runtime at moderate levels; pick a Fenix with a 21700 battery and regulated driver instead.

Quick Model Examples

Exact specifications vary by revision; check the current datasheet before buying.

• EDC pocket light: E35R (compact, high output, side switch, USB‑C).
• Duty/tactical: PD36R Pro (21700 cell, dual tail switches, fast access to strobe/turbo).
• Longer throw with duty ergonomics: TK20R V2 (tail switch UI, strong candela for distance).

How to Choose a Fenix

• Use case:
  • Everyday carry: 3–5 inch lights, 1000–2000 lm, side switch for pocket comfort.
  • Tactical/duty: Tail switch, momentary-on, instant strobe/turbo, aggressive knurling.
  • Search/inspection: Higher candela (throw) and a tight hotspot; consider larger heads.
• Battery: 21700 cells typically give 30–60% longer runtime than 18650 in similar sizes.
• Charging: If you prefer one-cable convenience, choose built-in USB‑C; otherwise pick models that use an external charger for faster multi-cell management.
• Switching: Dual tail switches for gloved use and tactics; side switch for EDC and cycling modes.
• Carry: Check clip orientation, tail stand capability, and holster compatibility.

Typical Runtime Expectations

Mode	Output (approx.)	Runtime on 21700 (approx.)	Notes
Eco	1–5 lm	4–20 days	Great for map reading and tent use.
Low	30–50 lm	2–3 days	Close tasks, navigation at night.
Medium	150–300 lm	8–20 h	General work; good balance of output and runtime.
High	800–1500 lm	2–4 h (with stepdowns)	Thermal and battery limits reduce output over time.
Turbo	2500–3000 lm	1–3 min max burst; 1.5–3 h total	Designed for short bursts, then steps down to protect the light.

Compatibility and Charging

• Cells: Many models use a single 18650 or 21700 Li‑ion. Fenix-branded protected, button‑top cells are recommended for reliable contact and onboard charging.
• CR123A: Some 18650 lights can run on two CR123A primaries; do not attempt to charge primaries inside the light.
• USB‑C: If the light has a port, use a quality cable and 5V USB power source; avoid fast‑charge bricks that exceed the rated current.

Pros and Cons

• Pros: Robust builds, consistent output, simple UIs, widely available batteries and parts.
• Cons: Turbo levels are time‑limited by heat; some models require button‑top cells; proprietary accessories may fit best.

Safety and Care

• Heat: High modes get hot—use gloves if needed and allow cooling. Do not cover the head while on.
• Lockout: Use electronic lockout or loosen the tailcap 1/8 turn to prevent pocket activation.
• Battery handling: Use quality protected cells; never mix old/new cells; store at ~40–60% charge if unused for months.
• Maintenance: Clean threads and contacts; lightly grease O‑rings; replace worn O‑rings to maintain IP68 sealing.

Accessories

• Holsters and clips for duty carry.
• Traffic wands/diffusers for signaling and area light.
• Remote switches and weapon mounts (check model compatibility).

FAQ

Are Fenix flashlights waterproof?

Most current models are IP68 rated, meaning dust‑tight and submersible to 2 meters for up to 30 minutes. Always check the specific model’s rating and ensure port covers and O‑rings are seated.

Which battery should I buy?

Match the specified size (18650 or 21700). Protected, button‑top cells are often required for reliable contact and onboard charging. Fenix ARB‑L series cells are a safe choice.

Can I use CR123A batteries?

Only if the manual lists CR123A compatibility. Never charge CR123A primaries in the light. Performance and runtime will differ from 18650/21700 cells.

How do turbo and stepdown work?

Turbo provides maximum brightness for short bursts. The light automatically reduces output as temperature rises or voltage drops to protect components and extend runtime.

What about warranty?

Fenix offers a limited warranty (terms vary by region and product). Keep your receipt and consult the model’s manual or regional Fenix site for coverage details.