Comparison Console
Nitecore NU31 vs Nitecore NU40
EDC Flashlights comparison. Compare price, weight, specifications, materials, and real-world use case.
Command Brief
Recommended read
Nitecore NU31 stands out as the lightest option for weight, with about a 18% gap from the closest alternative. Nitecore NU31 stands out as the cheapest option for retail price, with about a 35% gap from the closest alternative. Nitecore NU40 stands out as the highest output option for max lumens, with about a 82% gap from the closest alternative.
Decision Signals
What stands out
Nitecore NU31 stands out as the cheapest option for retail price, with about a 35% gap from the closest alternative.
Nitecore NU40 stands out as the most expensive option for retail price, with about a 53% gap from the closest alternative.
Nitecore NU31 stands out as the lightest option for weight, with about a 18% gap from the closest alternative.
Nitecore NU40 stands out as the heaviest option for weight, with about a 21% gap from the closest alternative.
Nitecore NU31 stands out as the lowest output option for max lumens, with about a 45% gap from the closest alternative.
Nitecore NU40 stands out as the highest output option for max lumens, with about a 82% gap from the closest alternative.
Nitecore NU40 stands out as the shortest runtime option for max runtime, with about a 18% gap from the closest alternative.
Nitecore NU31 stands out as the longest runtime option for max runtime, with about a 23% 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$39.95Cheapest
US$61Most expensive
Weight
95.5 g (3.37 oz)Lightest
116 g (4.09 oz)Heaviest
Length
62.3 mm (2.45 in)Shortest
79.8 mm (3.14 in)Longest
Output
Max lumens
550 lmLowest output
1000 lmHighest output
Max candela
5800 cdHighest candela
2700 cdLowest candela
Beam distance
145 m (476 ft)Highest
100 m (328 ft)Lowest
Max runtime
8820 minLongest runtime
7200 minShortest runtime
Power & durability
Battery type
Built-in 1800mAh Li-ion battery
Built-in 18650 Li-ion 2600mAh rechargeable
Charging type
USB-C charging port (5V
1A)
USB-C (5V 2A)
Rechargeable
Yes
Yes
IP rating
IP66
IP68
Impact resistance
1 m (3 ft)Lowest
2 m (7 ft)Highest
Material
Aluminum alloy front housing with durable PC material body
PC plastic rear housing with aluminum alloy front housing
Use case profile
Best for
Outdoor activitiesCampingHikingNight trekkingSkywatching
HikingTrail runningCampingCyclingMaintenanceOutdoor activities
Common praise
Lightweight and compact at 95.5gVersatile lighting modes including white, red, and high CRI auxiliary white lightLong battery runtime up to 147 hoursGood waterproof rating (IP66) and 1 meter impact resistanceUSB-C fast charging with short recharge timeSimple dual-button interface for easy operationReflective headband for safety
Lightweight and compact designHigh maximum output with uniform beamLong runtime especially on low modesUSB-C fast rechargeableDurable construction with good heat dissipationMultiple brightness levels and special modes including red light for night vision preservation
Common complaints
Charging time varies between 1.5 to 3 hours depending on sourceSlight green tint on white LED reportedCannot replace internal rechargeable battery
Runtime on highest output (Turbo) is limitedSome users may prefer longer beam distance for certain tasks
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