The story
A list of the sizes of Mag Instrument flashlights, and the years they were released:
1979: D and C battery models are put on the market; targeted to the public safety and industrial sectors (the 5C, 6C, 7C and 7D models are out of production)
1982: MagCharger: a larger more expensive model popular with public safety and emergency-services personnel. This light is much brighter than typical Maglites, and uses an incandescent Halogen bulb and a rechargeable NiCad or NiMH battery pack.
1984: Two AA cell batteries (Mini Maglite) Maglite's first personal size flashlight
1987: Two AAA cell batteries (Mini Maglite) A smaller version of the original Mini Maglite
1988: One AAA cell battery (Maglite Solitaire) Mag Instrument's key chain flashlight.
2006: Maglite LED Flashlight and Upgrade Module: 3-watt Luxeon III LED from Lumileds.
2006: Mini Maglite LED 2AA.
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2008: MagCharger: Upgraded Nickel/Metal Hydride (NiMH) battery pack increases charge time and second generation Halogen bulb increases light output.
2009: Next Generation Mag-LED Technology: Featuring a new Luxeon Rebel LED and extended battery life.
2010: Maglite XL100: offers a motion-controlled user interface using a built-in accelerometer
2010: Maglite XL50: This is a simpler version of the XL100, featuring three modes that can be activated with consecutive presses of the tailcap switch. The XL50 will have a lower retail price than the XL100.
2011: A variety of LED and rechargeable flashlights introduced. These include the ML100 and the rechargeable/C Cell LED ML125
2011: Maglite XL200: This is similar to the XL100 but offers higher lumen output.
2012: Mini Maglite AA Pro 215 Lumens and Mini Maglite AA Pro+ 245 Lumens.
2012: Maglite 2D pro 274 Lumens with a Cree XP-G rather than a Cree XP-E, increasing brightness while decreasing beam distance efficiency.
2012: Maglite Mag-Tac flashlight plain bezel, 310 Lumens, low mode at around 100 Lumens. First Maglite flashlight to use CR123A batteries. Tactical style designed with military input.
2012: Maglite Mag-Tac crowned bezel, 320 lumens. This model has no low mode for light output.
2012: The V4 was released with a newly developed electronic switch enabling a Multi Mode operation and a slightly more powerful bulb producing an output of 245 Lumens.
2012: In August, Maglite announced several new models including an LED version of the Solitaire, a Mini Maglite LED 2 AAA and a new version of the 2D LED termed the 2D LED Pro promising a beam in excess of 200 Lumens.
2013: Maglite released an LED version of the MagCharger. Features a 680 lumen output and spot-to-flood beam with a quarter turn of the head. Claimed 4 hours of battery life on a full charge at full power. Other specs are as the Incandescent Version.
From Wikipedia’s article on Maglite, shared under CC BY-SA 4.0.4