Comparison Console
Nitecore NU31 vs ThruNite TH20
EDC Flashlights comparison. Compare price, weight, specifications, materials, and real-world use case.
Command Brief
Recommended read
ThruNite TH20 stands out as the lightest option for weight, with about a 20% gap from the closest alternative. ThruNite TH20 stands out as the cheapest option for retail price, with about a 25% gap from the closest alternative. Nitecore NU31 stands out as the highest output option for max lumens, with about a 6% gap from the closest alternative.
Decision Signals
What stands out
ThruNite TH20 stands out as the cheapest option for retail price, with about a 25% gap from the closest alternative.
Nitecore NU31 stands out as the most expensive option for retail price, with about a 33% gap from the closest alternative.
ThruNite TH20 stands out as the lightest option for weight, with about a 20% gap from the closest alternative.
Nitecore NU31 stands out as the heaviest option for weight, with about a 26% gap from the closest alternative.
ThruNite TH20 stands out as the lowest output option for max lumens, with about a 5% gap from the closest alternative.
Nitecore NU31 stands out as the highest output option for max lumens, with about a 6% gap from the closest alternative.
Nitecore NU31 stands out as the shortest runtime option for max runtime, with about a 34% gap from the closest alternative.
ThruNite TH20 stands out as the longest runtime option for max runtime, with about a 51% 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$39.95Most expensive
US$29.99Cheapest
Weight
95.5 g (3.37 oz)Heaviest
76 g (2.68 oz)Lightest
Length
62.3 mm (2.45 in)Shortest
70 mm (2.76 in)Longest
Output
Max lumens
550 lmHighest output
520 lmLowest output
Max candela
5800 cdHighest candela
1120 cdLowest candela
Beam distance
145 m (476 ft)Highest
67 m (220 ft)Lowest
Max runtime
8820 minShortest runtime
13320 minLongest runtime
Power & durability
Battery type
Built-in 1800mAh Li-ion battery
1x AA or 1x 14500 lithium ion battery
Charging type
USB-C charging port (5V
1A)
Unknown
Rechargeable
Yes
Yes
IP rating
IP66
IPX-8 (2 meters)
Impact resistance
1 m (3 ft)Lowest
1.5 m (5 ft)Highest
Material
Aluminum alloy front housing with durable PC material body
Aircraft-grade aluminum with type III hard anodized finish
Use case profile
Best for
Outdoor activitiesCampingHikingNight trekkingSkywatching
Hands-free lighting tasksCampingReadingOutdoor 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
Comfortable headstrap and lightweight designSmooth ramping user interface with mode memoryGood output for size and battery typeDurable anodized aluminum constructionWaterproof to IPX-8 standard
Common complaints
Charging time varies between 1.5 to 3 hours depending on sourceSlight green tint on white LED reportedCannot replace internal rechargeable battery
No on-board chargingNo low voltage protection for 14500 batteryLimited retention options — designed primarily for use with headstrapE-switch located on end can be slightly awkward to operate
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