These are the standard 3-volt CR123A lithium batteries used for tactical flashlights from Streamlight, SureFire, Fenix, Pelican and many other manufacturers.
From the Manufacturer
The 3V CR123 Streamlight Lithium Battery is the best as a replacement for any standard 3-volt (123 CR123 123A) lithium battery. These Streamlight Lithium Batteries are extremely popular for the flashlights and digital camera use and will work just fine for any device that needs a standard 3V Lithium battery. Streamlight 3V Lithium Flashlight Batteries can be used in flashlights, film and digital cameras and any other device that uses the following battery models: 123A, CR123A, CR123, CR17345, K123A, VL123A, DL123A,5018LC, EL123AP, SF123, SF123A 3V Lithium Battery. Streamlight Lithium Batteries are the replacement battery of choice for Streamlight Scorpions, Streamlight Twin-Tasks TT-1L, Stream light Twin Tasks 2L, Streamlight Tactical Lights TL-2, Streamlight Tactical Flashlights TL-2LED, Streamlight TL-3 Tactical Lights, Streamlight Tactical Flash-lights TL-3 LED, Streamlight Night Fighters NF-2, Streamlight Night Fighter Flashlights NF-2 LED, Streamlight Tactical Gun Mount Flashlights. Streamlight Lithium Batteries is a 3 volt CR123A lithium battery with a shelf life of nearly 10 years.