CR123A-powered flashlights occupy the sweet spot between pocket-sized convenience and serious lumen output. The 3V lithium cell enables compact, powerful light designs that outperform most AA flashlights at the same size. Whether you need an everyday carry light, a duty flashlight, or a dependable outdoor backup, the picks below represent the best the category has to offer in 2026.
| Light | Lumens (max) | Batteries | Best For |
|---|---|---|---|
| SureFire G2X Pro | 600 lm | 2x CR123A | Duty/tactical |
| Streamlight ProTac HL 2 | 1000 lm | 2x CR123A | High output EDC |
| Fenix PD35 V3.0 | 1700 lm | 1x CR123A / 1x 18650 | Versatile EDC |
| SureFire E1B Backup | 400 lm | 1x CR123A | Ultra-compact EDC |
| Streamlight TLR-1 HL | 1000 lm | 2x CR123A | Weapon-mounted |
SureFire G2X Pro - Best Overall Tactical
The G&X Pro is one of the most iconic tactical flashlights of the past two decades and continues to earn its place at the top of the list. The high-strength Nitrolon polymer body is virtually indestructible under field use. Two modes - 15 lumens for close work and 600 lumens for high output - cover the most common tactical needs without mode-cycling complexity. The tailcap pushbutton is reliable and intuitive under stress. SureFire’s build quality is best in class and comes with a lifetime warranty against defects. If you want one light that will work without fail across decades of use, this is it.
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Streamlight ProTac HL 2 - Best High Output
The ProTac HL 2 pushes 1000 lumens from two CR123A cells - a remarkable output for the size. Streamlight’s programmable Ten-Tap feature lets you configure the light’s mode sequence to your preference: high-strobe-low is the tactical default, or you can set it to simple high-only mode for fieldwork. The aluminum body is anodized and impact-resistant, and the IPX7 waterproofing handles genuine outdoor use. It’s significantly less expensive than SureFire while delivering comparable or higher lumen output. The best choice for users who prioritize maximum brightness per dollar.
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Fenix PD35 V3.0 - Best Versatile EDC
The Fenix PD35 V3.0 accepts either a single CR123A or a single 18650 rechargeable cell, making it one of the most flexible lights in this category. On a CR123A it reaches 900 lumens and on an 18650 it climbs to 1700 lumens with significantly extended runtime. Six brightness levels plus a strobe give granular control. The side switch interface makes mode selection easy without removing the light from a pocket. The PD35 is a favorite among hikers, campers, and search and rescue volunteers who want maximum adaptability from one light. At under $60, it’s exceptional value for its capability.
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SureFire E1B Backup - Best Single-Cell Compact
The SureFire E1B runs on a single CR123A and produces 400 lumens from a light barely larger than the cell itself. The dual-output design offers 5 lumens for close work and 400 lumens for full output, with the low mode extending runtime to over 40 hours on a single cell. It’s designed to be a backup light - thin enough to carry alongside a primary light or in a pocket without bulk. The aerospace-grade aluminum body and IPX7 waterproofing mean it survives the same conditions as full-size duty lights. First responders and military personnel commonly carry this as a secondary light.
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Streamlight TLR-1 HL - Best Weapon-Mounted
The TLR-1 HL is one of the most widely used weapon-mounted lights in law enforcement and civilian defensive applications. It mounts to any MIL-STD-1913 Picatinny rail and produces 1000 lumens from two CR123A cells in a compact, aerodynamic housing. The ambidextrous momentary/steady switch design allows activation from either side of the firearm. It’s rated to pass military impact and temperature testing. For home defense handguns, AR carbines, or shotguns where a weapon light is part of the setup, the TLR-1 HL is the most common recommendation across professional instructors and defense communities.
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What to Look For
Output modes. A single maximum-lumen mode burns batteries fast and is unnecessarily bright for most tasks. Lights with at least two modes - a low around 5-15 lumens and a high - are far more practical for everyday use. Multiple levels add flexibility.
IPX waterproofing. For any outdoor, duty, or EDC light, IPX7 is the standard to target. IPX4 is splash-resistant but won’t survive a rain pour or accidental submersion.
Interface design. Tailcap switches allow one-handed activation without adjusting grip. Side switches are easier to operate in a pocket. For weapon-mounted lights, ambidextrous switches are required for safe operation.
Battery platform choice. If you already stock CR123A cells for other devices, a dedicated CR123A light simplifies logistics. If you want the option to use rechargeable cells, look for lights that also accept 18650 cells like the Fenix PD35.
Final Thoughts
The SureFire G2X Pro is the best overall choice for reliability-first users willing to pay for peace of mind. The Streamlight ProTac HL 2 delivers more lumens at a lower price and is the best value performance pick. The Fenix PD35 V3.0 wins for flexibility. EDC users who want the smallest footprint should look at the SureFire E1B. The Streamlight TLR-1 HL is the clear choice for weapon-mounted applications. All five are professional-grade tools from manufacturers with established support and parts availability.
For related reading, see best tactical flashlights and best headlamps for camping. See how we evaluate products at /methodology.
Frequently asked questions
Why do tactical flashlights use CR123A batteries instead of AA?+
CR123A cells deliver 3V lithium chemistry in a compact package with higher energy density than AA alkaline cells. This enables small, lightweight lights to achieve high lumen output. Lithium chemistry also maintains voltage in extreme cold, which is critical for tactical and outdoor use. Two CR123A cells in series deliver 6V, which is the standard for many high-output LED driver designs.
How many lumens is enough for a CR123A flashlight?+
For EDC use, 200-500 lumens on a primary mode is more than enough for most needs. Tactical and search applications benefit from 500-1000+ lumens for longer throw. Very high lumen ratings (1000+) are useful but draw battery life down quickly on max mode. A light with multiple output levels - low for close work, high for distance - is more practical than a single maximum-output design.
How do I know if a CR123A flashlight is waterproof?+
Look for an IPX rating in the specifications. IPX4 means splash-resistant from any direction. IPX7 means submersion to 1 meter for 30 minutes. IPX8 indicates deeper submersion resistance. For outdoor, EDC, and tactical use, IPX7 is the practical minimum to ensure the light survives rain, drops in puddles, and incidental water contact.