Comparison Console
Nitecore SRT7i vs ThruNite TT20
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 3% gap from the closest alternative. ThruNite TT20 stands out as the cheapest option for retail price, with about a 54% gap from the closest alternative. Nitecore SRT7i stands out as the highest output option for max lumens, with about a 19% gap from the closest alternative.
Decision Signals
What stands out
ThruNite TT20 stands out as the cheapest option for retail price, with about a 54% gap from the closest alternative.
Nitecore SRT7i stands out as the most expensive option for retail price, with about a 117% gap from the closest alternative.
Nitecore SRT7i stands out as the lightest option for weight, with about a 3% gap from the closest alternative.
ThruNite TT20 stands out as the heaviest option for weight, with about a 3% gap from the closest alternative.
ThruNite TT20 stands out as the lowest output option for max lumens, with about a 16% gap from the closest alternative.
Nitecore SRT7i stands out as the highest output option for max lumens, with about a 19% gap from the closest alternative.
Nitecore SRT7i stands out as the shortest runtime option for max runtime, with about a 67% gap from the closest alternative.
ThruNite TT20 stands out as the longest runtime option for max runtime, with about a 200% 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$129.95Most expensive
US$59.95Cheapest
Weight
175 g (6.17 oz)Lightest
181.1 g (6.39 oz)Heaviest
Length
163 mm (6.42 in)Longest
136 mm (5.35 in)Shortest
Output
Max lumens
3000 lmHighest output
2526 lmLowest output
Max candela
87500 cdHighest candela
26600 cdLowest candela
Beam distance
580 m (1903 ft)Highest
305 m (1001 ft)Lowest
Max runtime
48000 minShortest runtime
144000 minLongest runtime
Power & durability
Battery type
Nitecore 21700i Li-ion battery (NL2150HPi 5000mAh)
21700 proprietary lithium-ion
Charging type
USB Type-C
USB Type-C
Rechargeable
Yes
Yes
IP rating
IP68
IPX8
Impact resistance
2 m (7 ft)Highest
1.5 m (5 ft)Lowest
Material
Aero grade aluminum alloy with HA III military grade hard-anodized finish
Aluminum 6061-T6
Use case profile
Best for
Law enforcementTactical operationsHuntingSearchHigh-risk patrols
Tactical useHuntingSearch and rescueSecurity patrolRoadside emergenciesOutdoor adventuresEmergency preparedness
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
High brightness and long throwGood build quality and ruggednessVersatile and intuitive interfaceLong battery life especially in firefly modeProprietary battery includedUSB-C chargingVersatile carrying options including reversible clip and holster
Common complaints
Relatively heavy with battery at 175 gramsNo CR123A batteries included with adapter sold separatelySome users may find the size large for EDC
Proprietary battery limits battery replacement optionsSome users find the size and weight bulky for pocket carry
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