Maglite ML300LX Review

ML300LX_01Maglite’s third-generation LED technology, as initially seen on the MagCharger LED, brings multiple performance and usability improvements. With the new ML300L and ML300LX models, the alkaline D-cell lights are now available with many of the same features as the MagCharger LED, including higher output, electronic multi-mode switching, and user-programmable function sets. The ML300L is finished with diamond knurling and type-II anodize like most Maglite flashlights, whereas the ML300LX is a premium model with grenade grip knurling similar to the MAG-TAC and a more durable type-III anodize. Both third-generation models are available as two or three D-cell lights.

Key Specifications

  • Output (2D): 524 lumens high, 143 lumens low, 58 lumens eco
  • Output (3D): 625 lumens high, 143 lumens low, 58 lumens eco
  • Intensity: 33,573 candela (2D), 41,200 candela (3D)
  • Runtime (2D): 6h 30min high, 20h low, 69h eco
  • Runtime (3D): 16h high, 77h low, 117h eco
  • Battery: 2 x D-cell or 3 x D-cell
  • Length: 9.1″ (2D), 11.8″ (3D)
  • Diameter: 2.3″ bezel, 1.5″ body
  • Weight with Batteries: 20 oz. (3D), 26.4 oz. (3D)
  • Colors: Black, Red, Tan, Gray, Green
  • Warranty: Limited Lifetime with $15 Handling Fee
  • MSRP: $64.99 (2D), $69.99 (3D)

Pricing & Contents

MSRP for the ML300LX is $64.99 for the two-cell and $69.99 for the three-cell, and the light is available in a matte finish with a choice of Black, Crimson Red, Coyote Tan, Urban Gray, or Foliage Green. Included in the blister packaging is just the Maglite ML300LX and user manual.



The ML300LX is designed for use with D-cell alkaline batteries. During our testing, we also used plastic adapters that hold two AA batteries in parallel. Each adapter replaces a single D-cell, allowing us to use rechargeable Sanyo Eneloop NiMH batteries.


The Light

With the exception of the more streamlined head, like the MagCharger LED, the ML300LX has classic Maglite styling plus a type-III anodized finish to protect against scratches and corrosion.

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The head features a polycarbonate window and a smooth plastic reflector. Focusing takes less than a quarter turn from end to end, going from flood to spot to flood.

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The body-mounted switch is an electronic switch similar to that of the XL- and ML-series lights. Grenade-grip knurling along the body is smooth and easy to grip.


Tail Cap
A band of knurling is found on the tail cap, and the threads are anodized so the light can be locked out with a quarter turn of the tailcap.

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Five modes, which are arranged into four function sets, are available for the user to choose from.

Momentary (2D: 524 lumens, 3D: 625 lumens)
A single press will activate momentary output until the switch is released.

Full Power (2D: 524 lumens, 3D: 625 lumens)
Maximum output.

Low Power (2D: 130 lumens, 3D: 143 lumens)
Low output.

Eco (58 lumens)
Lowest output.

12 Hz strobe.

For all modes except for momentary, a single click will turn the light off.

Function Sets

The five available modes are grouped into four user-selectable function sets of three modes. To change the function set, start with the tailcap slightly unscrewed so that the light does not turn on when the switch is pressed. Press and hold the switch while screwing on the tailcap, and once the tailcap is screwed on all the way, the light will start flashing. The number of flashes corresponds to a function set’s number, which are cycled. Releasing the switch selects the function set.



Using a Cree XM-L2 LED, the ML300LX is rated for 524 lumens on the two-cell model and 625 lumens on the three-cell model. The redesigned focusing assembly eliminates “donut holes” in the beam pattern and makes focusing quicker.


On the two ends of the focusing cam are two distinct flood beams – a slightly larger hotspot with a defined cutoff (left) and a smoother flood pattern (right).

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There is a standby current drain of 473 µA (0.473 mA), which can slowly discharge the batteries, especially rechargeable NiMH. If the light will be stored with batteries installed for more than several months, we recommend unscrewing the tailcap until the light does not turn on (usually a quarter-turn).


If you haven’t read our article about runtime graphs and the ANSI FL1 Standard, please click here.



The ML300LX maintains a consistent reduction in output throughout the runtime on Full Power mode, which is mostly due to the behavior of alkaline batteries. Both models have similar runtime characteristics, and the three-cell model produces approximately 50 to 100 more lumens throughout.


The third-generation Maglite D-cell flashlights incorporate many improvements from the MagCharger LED into the ML300L and ML300LX, which are less expensive and use common batteries. These new lights are great for everyday use with outputs of 524 lumens for the two-cell model and 625 lumens for the three-cell model. The improved focusing system is faster and easier to use, and customizable function sets allow certain modes, such as strobe or eco, to be enabled only if desired. Two variants are available with a choice between the standard model Maglite ML300L, or the premium and more tactical-oriented Maglite ML300LX as shown in this review, and both are significant steps up from the previous generation lights.


  • Maximum output of 524/625 lumens
  • Improved flood-to-spot focusing
  • User-programmable function sets
  • Lifetime warranty
  • Large size
  • Standby current drain
  • Polycarbonate window scratches easily
  • Handling Fee for warranty

Related Links

Maglite ML300LX 2D Product Page

Maglite ML300LX 3D Product Page

21 Responses

  1. jim says:

    For years at work we used MAGLITES but the biggest problem was dark circle in middle of light..I hope my 300lx does not have that dark circle..

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