Comparison Console
Acebeam T37 vs Nitecore P20i
EDC Flashlights comparison. Compare price, weight, specifications, materials, and real-world use case.
Command Brief
Recommended read
Nitecore P20i stands out as the lightest option for weight, with about a 39% gap from the closest alternative. Nitecore P20i stands out as the cheapest option for retail price, with about a 11% gap from the closest alternative. Acebeam T37 stands out as the highest output option for max lumens, with about a 122% gap from the closest alternative.
Decision Signals
What stands out
Nitecore P20i stands out as the cheapest option for retail price, with about a 11% gap from the closest alternative.
Acebeam T37 stands out as the most expensive option for retail price, with about a 12% gap from the closest alternative.
Nitecore P20i stands out as the lightest option for weight, with about a 39% gap from the closest alternative.
Acebeam T37 stands out as the heaviest option for weight, with about a 63% gap from the closest alternative.
Nitecore P20i stands out as the lowest output option for max lumens, with about a 55% gap from the closest alternative.
Acebeam T37 stands out as the highest output option for max lumens, with about a 122% gap from the closest alternative.
Nitecore P20i stands out as the shortest runtime option for max runtime, with about a 47% gap from the closest alternative.
Acebeam T37 stands out as the longest runtime option for max runtime, with about a 89% 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$129.9Most expensive
US$116Cheapest
Weight
202 g (7.13 oz)Heaviest
124 g (4.37 oz)Lightest
Length
145.2 mm (5.72 in)Shortest
151 mm (5.94 in)Longest
Output
Max lumens
4000 lmHighest output
1800 lmLowest output
Max candela
48400 cdHighest candela
28500 cdLowest candela
Beam distance
440 m (1444 ft)Highest
337 m (1106 ft)Lowest
Max runtime
4320 minLongest runtime
2280 minShortest runtime
Power & durability
Battery type
21700 rechargeable battery
Rechargeable 21700 Li-ion battery (Nitecore 21700 i-series NL2140i 4000mAh)
Charging type
USB Type-C
USB Type-C
Rechargeable
Yes
Yes
IP rating
IP68
IP68 (waterproof, submersible up to 2 meters)
Impact resistance
Unknown
2 m (7 ft)
Material
Black anodized aluminum
Aluminum
Use case profile
Best for
Tactical useDuty useEDCSelf-defenseSearch and rescue
HuntingLaw EnforcementMilitaryProfessional inspection and detectionOutdoor activitiesEDC tactical use
Common praise
High output with consistent brightnessTactile and easy-to-use rotary magnetic switchSolid build quality and durable anodized aluminum bodyLong runtime especially in Ultra Low mode (up to 72 hours)Convenient hidden USB-C charging portVersatile two-stage tail switchReplaceable battery
High brightness suitable for tactical and outdoor useDual white and UV light for detection and inspectionRechargeable with USB-C and included 21700 batteryCompact yet robust build with aircraft-grade aluminumGood impact resistance and waterproof rating
Common complaints
Relatively heavy at 202 grams for cap or lightweight carryRotary switch requires multiple turns to switch between certain modesHolster is stiff initially and tight fitting
Relatively heavy and large for pocket EDCHigher price point compared to basic modelsMight have complex modes for casual users
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