Fenix HM23 v2.0 (300 lm, AA/14500)
Published · Researched 2026-09-21
2026 lineup note: Fenix's AA-powered ultralight: 300 lumens, 86.3 g including battery, IP68, magnetic tail, detachable flashlight body. Runs on the included AA or a 1.5V 14500 Li-ion (full 300 lm output is via 14500 — output on plain AA is reduced per retailer specs). Street $37.99–$55.95. Replaces the original HM23 (240 lm). SKU variants: HM23V2 / FENHM23V20.
Version lineage (2023–2026)
- HM23 (original): 240 lm, AA-powered — the classic Fenix camp headlamp.
- HM23 v2.0 (current): 300 lm, Luminus SST20 white LED + dual red 2835 LEDs, detachable body (use as handheld flashlight), magnetic tail cap, electronic lockout, IP68, 2-m impact, aluminum alloy body. Still current as of Sept 2026.
- Discontinued predecessors: Original HM23 (240 lm) — one retailer explicitly notes redirecting HM23 pages to the v2.0. Verify "v2.0" on the listing.
- Smart-buy advice: At ~$38 street it's the cheapest IP68 headlamp in the catalog. Buy the 14500 battery if you want the headline 300 lm; on a plain AA it's a 150-lm-class light (retailer spec interpretation — verify against Fenix's manual).
Overview
The AA traditionalist's ultralight: a tiny aluminum right-angle light that works as a headlamp, detaches into a handheld flashlight, and sticks to anything ferrous via its magnetic tail. White + red emitters, five modes, electronic lockout, and genuine IP68 sealing. The pitch is fuel universality — AAs are available everywhere on earth — with the 14500 option for full output. A favorite of campers, mechanics, and emergency kits.
Key Specs
| Spec | Value |
|---|---|
| Max output | 300 lm (via 14500; reduced on AA — see Buying traps) |
| Beam distance | 88 m max |
| Runtimes (14500) | High 300 lm: 5 h 22 min · Med 50 lm: 11.5 h · Low 3 lm: 100 h · Red 5 lm: 17 h · Red flash: 34 h |
| Weight | 86.3 g / 3.04 oz including battery |
| Battery | 1× AA (included) or 1× 1.5V 14500 rechargeable |
| Water resistance | IP68 |
| Impact resistance | 2 m |
| LEDs | Luminus SST20 white + 2× 2835 red, 50,000 h |
| Extras | Magnetic tail cap, detachable flashlight body, electronic lockout, large side switch, reverse-polarity protection, aluminum alloy body |
| Size | 73.6 × 36 × 30 mm |
Sources: fenixtactical.com, canadianoutdoorequipment.com, hifishgear.com, hillmalaya.com.hk listings (all observed 2026-09-20).
Long-term durability
- Aluminum body + IP68 + 2-m impact is a rugged combination; the HM23 line has a multi-year reputation for surviving toolboxes and gloveboxes.
- The magnetic tail is the feature most likely to collect metal filings — wipe it down; filings near the charging… (no charging port — battery swaps only, so no port-cover failure mode at all).
- Fenix Lighting USA offers a limited lifetime warranty (per dealer listings; terms not re-verified — UNVERIFIED).
Pricing
- Street: $37.99–$55.95 — SOURCES: hifishgear.com $37.99 (low stock); canadianoutdoorequipment.com $55.95; fenixtactical.com CAD$55.95.
- A 14500 cell is a separate purchase if you want full output (price not re-verified — UNVERIFIED).
In the Box
- HM23 v2.0 headlamp
- 1× AA battery
- Spare O-ring
Warranty
Limited lifetime warranty via Fenix Lighting USA (per dealer listings). Terms not re-verified in this pass (UNVERIFIED).
Support & Parts
- Fenix Lighting (China/US). O-rings and headbands are the relevant spares; the standard AA/14500 cell is available everywhere.
Head-to-head vs closest rivals
- vs Nitecore NU25 UL (
nitecore-nu25-ul): NU25 UL is 40 g lighter with USB-C and dual beams; HM23 v2.0 takes AAs (available anywhere), has a magnetic tail, and detaches into a flashlight. Pick NU25 UL for thru-hiking, HM23 for versatility and fuel universality. - vs Petzl Tikka (
petzl-tikka): Tikka is 3×AAA with Petzl's ecosystem; HM23 is lighter, tougher-sealed (IP68), and cheaper. Tikka for the Petzl upgrade path; HM23 for rugged simplicity. - vs Black Diamond Cosmo 350 (
black-diamond-cosmo-350): Cosmo is brighter (350 lm) with red night vision and IPX8; HM23 is the tool-like pick with magnet + detachable body.
Care & maintenance
- No charging port to maintain — the main care item is keeping the magnetic tail free of metal debris.
- Check the O-ring annually; a dab of silicone grease keeps the IP68 seal honest.
- Remove AA for off-season storage.
Buying traps
- 300 lm needs the 14500: retailer specs note full output is via the 14500 Li-ion; on a standard AA expect roughly half. If the listing doesn't mention a 14500, budget for one.
- HM23 vs HM23 v2.0: the original is 240 lm. Retailers have redirected old pages, but marketplace sellers may still list v1 — verify "v2.0".
- 14500 voltage: use a 1.5V 14500 (or Fenix's recommended cell), not a 3.7V 14500 — wrong voltage risks damage (per Fenix's battery guidance; confirm in the manual).
Community Verdict
A quiet community favorite for campers and EDC users: the detachable magnetic body gets constant praise ("headlamp, flashlight, and work light in one"), and IP68 at this price is rare. The honest caveat from owner reports: on a plain AA it's a modest light — the 300-lm headline needs the 14500. Nobody regrets it as a camp/emergency light; nobody picks it for trail running.
Images
images/fenix-hm23-v20-1.jpgimages/fenix-hm23-v20-2.jpgimages/fenix-hm23-v20-3.jpgimages/fenix-hm23-v20-4.jpg— Full side view, headband on, housing stamped "Fenix HM23 V2.0"images/fenix-hm23-v20-5.jpg— 3/4 side view, orange/grey headbandimages/fenix-hm23-v20-6.jpg— Real photo: head unit next to AA battery (AA compatibility shown)
Research date: 2026-09-20. Specs/prices change; re-verify live before buying. Claims dated above; anything marked UNVERIFIED was not confirmed from a primary source.