Comparison Console
Acebeam PT20 vs Olight Diffuse
EDC Flashlights comparison. Compare price, weight, specifications, materials, and real-world use case.
Command Brief
Recommended read
Acebeam PT20 stands out as the lightest option for weight, with about a 18% gap from the closest alternative. Olight Diffuse stands out as the cheapest option for retail price, with about a 17% gap from the closest alternative. Olight Diffuse stands out as the highest output option for max lumens, with about a 40% gap from the closest alternative.
Decision Signals
What stands out
Olight Diffuse stands out as the cheapest option for retail price, with about a 17% gap from the closest alternative.
Acebeam PT20 stands out as the most expensive option for retail price, with about a 21% gap from the closest alternative.
Acebeam PT20 stands out as the lightest option for weight, with about a 18% gap from the closest alternative.
Olight Diffuse stands out as the heaviest option for weight, with about a 22% gap from the closest alternative.
Acebeam PT20 stands out as the lowest output option for max lumens, with about a 29% gap from the closest alternative.
Olight Diffuse stands out as the highest output option for max lumens, with about a 40% gap from the closest alternative.
Acebeam PT20 stands out as the shortest runtime option for max runtime, with about a 84% gap from the closest alternative.
Olight Diffuse stands out as the longest runtime option for max runtime, with about a 543% 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$39.9Most expensive
US$32.99Cheapest
Weight
47 g (1.66 oz)Lightest
57.5 g (2.03 oz)Heaviest
Length
132.5 mm (5.22 in)Longest
87 mm (3.43 in)Shortest
Output
Max lumens
500 lmLowest output
700 lmHighest output
Max candela
1600 cdLowest candela
1700 cdHighest candela
Beam distance
80 m (262 ft)
80 m (262 ft)
Max runtime
1680 minShortest runtime
10800 minLongest runtime
Power & durability
Battery type
1 x 10880 USB-C Li-ion battery, compatible with 2 x AAA alkaline/NiMH batteries
14500 lithium-ion (also compatible with AA primary or NiMH)
Charging type
USB-C (battery charging port)
USB-C charging via battery
Rechargeable
Yes
Yes
IP rating
IP68 (2m waterproof for 30 minutes)
IPX8
Impact resistance
1.5 m (5 ft)
Unknown
Material
Al6061-T6 aluminum alloy with HAIII hard-anodized finish
Unknown
Use case profile
Best for
Everyday carryTravelEmergency lightingInspection work
EDC useTool kit or toolbox lightUsers needing anti-roll shapeUsers wanting waterproof light
Common praise
Compact size and lightweight designGood balance of brightness and runtimeConvenient two-way clipIncludes rechargeable battery with USB-C chargingComfortable pen-shaped gripReliable tail switch operation
Good waterproof rating (IPX8)Anti-roll pentagon shapeGood output and runtimeConvenient battery with onboard USB-C chargingNice e-switch with indicator and lockout
Common complaints
Carbon fiber finish can be slick to holdLow CRI (~70) not ideal for color-critical tasksNo standby light current
No knurling makes grip less secureTailcap is small and fiddly to unscrewNo built-in charging in flashlight (battery charges externally)Limited documentation on AA battery mode