Comparison Console
Nitecore SRT7i vs Nitecore TM39
EDC Flashlights comparison. Compare price, weight, specifications, materials, and real-world use case.
Command Brief
Recommended read
Nitecore SRT7i stands out as the lightest option for weight, with about a 87% gap from the closest alternative. Nitecore SRT7i stands out as the cheapest option for retail price, with about a 74% gap from the closest alternative. Nitecore TM39 stands out as the highest output option for max lumens, with about a 73% gap from the closest alternative.
Decision Signals
What stands out
Nitecore SRT7i stands out as the cheapest option for retail price, with about a 74% gap from the closest alternative.
Nitecore TM39 stands out as the most expensive option for retail price, with about a 285% gap from the closest alternative.
Nitecore SRT7i stands out as the lightest option for weight, with about a 87% gap from the closest alternative.
Nitecore TM39 stands out as the heaviest option for weight, with about a 678% gap from the closest alternative.
Nitecore SRT7i stands out as the lowest output option for max lumens, with about a 42% gap from the closest alternative.
Nitecore TM39 stands out as the highest output option for max lumens, with about a 73% gap from the closest alternative.
Nitecore TM39 stands out as the shortest runtime option for max runtime, with about a 96% gap from the closest alternative.
Nitecore SRT7i stands out as the longest runtime option for max runtime, with about a 2122% 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$129.95Cheapest
US$499.95Most expensive
Weight
175 g (6.17 oz)Lightest
1361 g (48.01 oz)Heaviest
Length
163 mm (6.42 in)Shortest
276 mm (10.87 in)Longest
Output
Max lumens
3000 lmLowest output
5200 lmHighest output
Max candela
87500 cdLowest candela
562500 cdHighest candela
Beam distance
580 m (1903 ft)Lowest
1500 m (4921 ft)Highest
Max runtime
48000 minLongest runtime
2160 minShortest runtime
Power & durability
Battery type
Nitecore 21700i Li-ion battery (NL2150HPi 5000mAh)
NBP68 HD rechargeable battery pack (98Wh, 3400mAh x8, 3.7V)
Charging type
USB Type-C
Built-in charging port via AC adapter (3.5mm)
Rechargeable
Yes
Yes
IP rating
IP68
IP68 (up to 2m submersible)
Impact resistance
2 m (7 ft)Highest
1 m (3 ft)Lowest
Material
Aero grade aluminum alloy with HA III military grade hard-anodized finish
Aviation grade aluminum alloy with Military grade HA III hard anodized finish
Use case profile
Best for
Law enforcementTactical operationsHuntingSearchHigh-risk patrols
Search and rescueHuntingExplorationLong-range illumination
Common praise
High maximum brightness of 3000 lumensLong beam throw of 580 metersGood battery capacity with included 21700 5000mAh rechargeable batterySmart selector ring enables easy one-handed controlDurable build with IP68 waterproofing and 2m impact resistanceFast USB-C charging portMultiple user-friendly modes including strobe and turboEffective tail stand capability for safety
Extremely powerful beam with impressive long throwDurable build with waterproof and impact resistanceUser-friendly double-button interface with OLED displayLong runtime on lower modes with included large battery pack
Common complaints
Relatively heavy with battery at 175 gramsNo CR123A batteries included with adapter sold separatelySome users may find the size large for EDC
Large size and weight limits portability for everyday carryHigher brightness modes have shorter runtimePremium price point
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