Comparison Console
Acebeam P18 vs Sofirn SK31
EDC Flashlights comparison. Compare price, weight, specifications, materials, and real-world use case.
Command Brief
Recommended read
Sofirn SK31 stands out as the lightest option for weight, with about a 13% gap from the closest alternative. Sofirn SK31 stands out as the cheapest option for retail price, with about a 59% gap from the closest alternative. Sofirn SK31 stands out as the highest output option for max lumens, with about a 36% gap from the closest alternative.
Decision Signals
What stands out
Sofirn SK31 stands out as the cheapest option for retail price, with about a 59% gap from the closest alternative.
Acebeam P18 stands out as the most expensive option for retail price, with about a 145% gap from the closest alternative.
Sofirn SK31 stands out as the lightest option for weight, with about a 13% gap from the closest alternative.
Acebeam P18 stands out as the heaviest option for weight, with about a 15% gap from the closest alternative.
Acebeam P18 stands out as the lowest output option for max lumens, with about a 26% gap from the closest alternative.
Sofirn SK31 stands out as the highest output option for max lumens, with about a 36% gap from the closest alternative.
Sofirn SK31 stands out as the shortest runtime option for max runtime, with about a 5% gap from the closest alternative.
Acebeam P18 stands out as the longest runtime option for max runtime, with about a 6% 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$52.99Cheapest
Weight
256 g (9.03 oz)Heaviest
223.3 g (7.88 oz)Lightest
Length
145 mm (5.71 in)Shortest
156.1 mm (6.15 in)Longest
Output
Max lumens
5000 lmLowest output
6800 lmHighest output
Max candela
98910 cd
Unknown
Beam distance
629 m (2064 ft)Highest
395 m (1296 ft)Lowest
Max runtime
31680 minLongest runtime
30000 minShortest runtime
Power & durability
Battery type
21700 Li-ion rechargeable
21700 Li-ion rechargeable
Charging type
USB Type-C
USB-C 5V 3A, approx. 3 hours charging time
Rechargeable
Yes
Yes
IP rating
IP68
IPX8
Impact resistance
1.5 m (5 ft)
Unknown
Material
A6061-T6 aluminum alloy with HAIII hard-anodized finish
Aluminum alloy body, stainless steel bezel with tungsten spheres
Use case profile
Best for
Tactical useProfessional useSecurityLaw enforcementHuntingLong range illumination
Tactical useOutdoor useSearch and rescueLaw enforcementEDCHome defensePatrol duty
Common praise
High brightness and long rangeRobust and high-quality constructionIntuitive dual tail switch interfaceEffective tactical and daily modesIncluded high-capacity rechargeable 21700 battery
High max output of 6800 lumensLong beam distance (395 meters)Robust aluminum body with stainless steel bezel and tungsten spheres for glass breakingEfficient LHP73B LED emitter with clean tintTriple-switch interface allowing intuitive controlExcellent water resistance with screwable aluminum USB-C coverLong runtime up to 500 hours on low modeIncluded rechargeable 21700 batteryBattery indicator for charge level
Common complaints
Multi-LED design may be less efficient than single-LED for extended runtimesSome users reported battery drain issues if not frequently usedUSB-C cable length criticized as shortNo included holster or lanyard
Lockout switch placement can be awkwardLockout switch sometimes malfunctions causing failure to turn on (resolvable by toggling lockout)Included battery has lower continuous discharge rating (CDR) than recommended for max turbo output
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