Comparison Console
Fenix RC40 vs ThruNite TN42
EDC Flashlights comparison. Compare price, weight, specifications, materials, and real-world use case.
Command Brief
Recommended read
ThruNite TN42 stands out as the lightest option for weight, with about a 51% gap from the closest alternative. ThruNite TN42 stands out as the cheapest option for retail price, with about a 43% gap from the closest alternative. ThruNite TN42 stands out as the highest output option for max lumens, with about a 39% gap from the closest alternative.
Decision Signals
What stands out
ThruNite TN42 stands out as the cheapest option for retail price, with about a 43% gap from the closest alternative.
Fenix RC40 stands out as the most expensive option for retail price, with about a 75% gap from the closest alternative.
ThruNite TN42 stands out as the lightest option for weight, with about a 51% gap from the closest alternative.
Fenix RC40 stands out as the heaviest option for weight, with about a 102% gap from the closest alternative.
Fenix RC40 stands out as the lowest output option for max lumens, with about a 28% gap from the closest alternative.
ThruNite TN42 stands out as the highest output option for max lumens, with about a 39% gap from the closest alternative.
ThruNite TN42 stands out as the shortest runtime option for max runtime, with about a 97% gap from the closest alternative.
Fenix RC40 stands out as the longest runtime option for max runtime, with about a 2938% gap from the closest alternative.
Specification Profile
Relative dimensions at a glance
Each axis is normalized against the largest raw value among the products in this comparison. Farther outward means a larger value, not necessarily a better result. Axes with an unverified value are omitted.
Price & carry
Retail price
US$480Most expensive
US$275Cheapest
Weight
1310 g (46.21 oz)Heaviest
648 g (22.86 oz)Lightest
Length
299 mm (11.77 in)Longest
190.5 mm (7.50 in)Shortest
Output
Max lumens
3500 lmLowest output
4848 lmHighest output
Max candela
126000 cdLowest candela
864000 cdHighest candela
Beam distance
710 m (2329 ft)Lowest
1860 m (6102 ft)Highest
Max runtime
9600 minLongest runtime
316 minShortest runtime
Power & durability
Battery type
Built-in rechargeable Li-ion battery pack 7.4V 7800mAh
4x 21700 rechargeable lithium-ion batteries (parallel configuration)
Charging type
AC adapter and DC car charger
USB Type-C
Rechargeable
Yes
Yes
IP rating
IPX-8 underwater 2m
IPX8 (2 meters)
Impact resistance
Unknown
1.5 m (5 ft)
Material
Durable aircraft-grade aluminum, Type III hard-anodized anti-abrasive finish, toughened ultra-clear glass lens with anti-reflective coating
Aluminum, hard anodized
Use case profile
Best for
High output illuminationLong beam distanceRechargeable useTactical and industrial applications
Search and rescueLong distance throwOutdoor activities requiring high output and long range
Common praise
Very bright output suitable for professional useLong beam distance and runtimeSolid build quality and durable materialsDual side switches for quick mode changesPower bank function to charge external devices
Very high max output of 4848 lumens with excellent long throw capability (1860 meters).Good build quality with hard anodized aluminum and tight threading.Simple and intuitive e-switch user interface with mode memory.Included accessories like shoulder strap and USB-C charger.No visible or audible PWM.Battery runtime up to approximately 5 hours and 16 minutes at firefly mode for 180 days.Good thermal performance with predictable step-down after 2 minutes on turbo.
Common complaints
Heavier and larger than typical EDC lightsRuntime in turbo mode is limited due to overheating protectionPrice is relatively highNot waterproof beyond 2 meters depth
No thermal regulation, causing step down due to heat after turbo mode.Threads are somewhat difficult to start or unscrew.Heats up significantly on turbo/high modes making prolonged handheld use uncomfortable.Limited retention options, some users find shoulder strap front mount flimsy.Low voltage protection is not fully clear; caution advised with unprotected cells.Large size and weight (over 600 grams without batteries) makes compact carry difficult.
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