Emergency and Survival Flashlights: How to Choose One and Which Fenix to Keep Ready
Key takeaways
- A good survival or emergency flashlight is one that still works when the power has been out for days: it runs on batteries you can actually get, lasts a long time on low, and survives water and drops.
- Battery flexibility matters more than peak lumens. Lights that accept a backup battery type, such as AA or CR123A, keep working after the rechargeable cell runs flat.
- Look for a published waterproof rating (IP68 means submersible) and a drop rating, both measured to the ANSI/PLATO FL1 standard.
- A low mode with a long runtime is what gets you through a multi-day outage. A few hundred lumens is plenty for most emergency tasks.
- For lighting a room during a power outage, an LED camping lantern beats candles: no open flame, hundreds of hours on low, and many can charge a phone.
- Most households are better served by two or three lights (a handheld, a headlamp and a lantern) than by one very bright flashlight.
In an emergency, the flashlight that matters is the one that turns on. Storms, earthquakes, wildfire evacuations and long power outages all have the same problem: you can't count on wall power, and you may not be able to buy batteries for days. This guide explains what actually makes a flashlight good for survival and emergency use, then compares the Fenix lights we'd keep ready for it.
What Makes a Flashlight Good for Survival and Emergencies
1. It runs on more than one kind of battery
A rechargeable light is ideal for everyday use, but in a long outage you may not be able to recharge it. The safest emergency lights accept a backup battery you can store or find anywhere. The Fenix PD35 V3.0, for example, ships with a rechargeable 18650 battery but also runs on two non-rechargeable CR123A lithium cells. The Fenix LD22 V2 comes with a USB-C rechargeable battery and two alkaline AA batteries as a backup.
2. It has a long-running low mode
Maximum lumens only last a short time before a light steps down to manage heat. What gets you through a night without power is the low or eco mode. The PD35 V3.0 runs up to 300 hours on Eco, and the Fenix E12 V3 runs up to 100 hours on Low from a single AA. When you compare lights, check the runtime of the mode you'll use most, not the headline lumen figure.
3. It survives water and drops
Emergencies tend to be wet and rough. Look for an IP rating with a stated depth and a drop rating. IP68 means the light is dustproof and can be submerged; most of the lights below are rated IP68 and drop-tested to 1 or 2 meters. Our guide to IP waterproof ratings explains what each rating means.
4. It's bright enough, not as bright as possible
For moving around a dark house, checking a breaker panel or walking a yard, a few hundred lumens is plenty. Very high output is useful for searching or signaling over distance, but it drains the battery fast. A light with several brightness levels lets you match the output to the job and stretch the battery.
5. It works hands-free
Many emergency tasks need both hands: carrying supplies, treating an injury, working on a generator. A headlamp, or a flashlight with a magnetic tail or clip, is far more useful than a light you have to hold.
Fenix Survival and Emergency Lights Compared
All figures below come from Fenix's official reference manuals, tested to the ANSI/PLATO FL1 standard.
| Light | Type | Batteries it runs on | Max output | Longest runtime | Water / drop rating | Charging |
|---|---|---|---|---|---|---|
| PD35 V3.0 | Flashlight | One 18650 (included) or two CR123A | 1,700 lumens | 300 h (Eco) | IP68 / 1 m | USB-C on the battery |
| LD22 V2 | Flashlight | Included rechargeable battery or two AA | 800 lumens (Turbo not available on AA) | 319 h (Eco, rechargeable battery) | IP68 / 1 m | USB-C on the battery |
| PD36R Pro | Flashlight | One 21700 (included) | 2,800 lumens | 42 h (Eco) | IP68 / 1 m | USB-C on the light |
| E12 V3 | Pocket backup | One AA (alkaline, NiMH or lithium AA) | 200 lumens | 100 h (Low) | IP68 / 1 m | None (replace the AA) |
| HM23 V2.0 | Headlamp | One AA | 300 lumens | 100 h (Low, alkaline AA) | IP68 / 2 m | None (replace the AA) |
Which Fenix Light to Keep Ready
Best all-round survival flashlight: PD35 V3.0
The PD35 V3.0 is the light we'd hand most people for an emergency kit. It puts out 1,700 lumens with a 357-meter beam, runs 300 hours on its 5-lumen Eco mode, and is rated IP68 with 1-meter impact resistance. The included 18650 battery charges by USB-C, and if it runs flat you can drop in two CR123A lithium cells instead.
Best if you want AA backup: LD22 V2
The LD22 V2 comes with a USB-C rechargeable battery and two alkaline AAs in the box. On the rechargeable battery it reaches 800 lumens; on AA it still runs every mode except Turbo, so you can keep using it on the most common battery in the world. It also has Strobe and SOS modes for signaling.
Most output: PD36R Pro
If you need to search a yard, a field or a flooded street, the PD36R Pro delivers 2,800 lumens with a 380-meter beam and runs up to 42 hours on Eco. It uses a single rechargeable 21700 battery, so pair it with a spare charged battery or a power bank if you're planning for a long outage.
Glovebox and kit backup: E12 V3
The E12 V3 weighs 1.9 ounces with its AA battery and runs 100 hours on Low. It has no charging port at all, which is the point: there's nothing to keep topped up. Note that it does not accept rechargeable 14500 lithium-ion batteries.
Hands-free light: HM23 V2.0
The HM23 V2.0 headlamp runs on a single AA, puts out 300 lumens and lasts 100 hours on Low. It adds a red light that preserves your night vision, is rated IP68 with 2-meter impact resistance, and detaches from the headband to use as a handheld light.
Why a Camping Lantern Belongs in Your Power-Outage Kit
A flashlight is the right tool for moving around in the dark, but it lights only where you point it. When the power is out for hours or days, what most people actually need is light for a whole room: to cook, eat, read, play a game with the kids or find things on a shelf. That's what a camping lantern does, and it's a better choice than candles.
- It lights the whole room. A lantern spreads soft light in every direction instead of a beam. Hang it from a hook or set it in the middle of a table and the room is usable again.
- There's no open flame. Unlike candles or fuel lanterns, an LED lantern can't start a fire if it tips over, which makes it a safer choice around kids and pets.
- It runs for days on low. On their lowest settings, Fenix lanterns run for hundreds of hours, so one charge can cover a multi-day outage.
- Many can charge your phone. Several Fenix lanterns double as a power bank, which keeps a phone alive for news and calls while the power is down.
- It works hands-free. Hooks, hanging loops and magnetic bases let you put the light where you need it and leave your hands free.
For a deeper comparison of lanterns and flashlights during outages, see Camping Lantern vs Flashlight: Best Choice for Power Outages, or our camping lantern buying guide.
Fenix Lanterns for Power Outages Compared
| Lantern | Max output | Longest runtime | Power | Charges a phone? | Water rating |
|---|---|---|---|---|---|
| CL26R Pro | 650 lumens | 408 h (Down 1) | One removable 21700 (included), USB-C charging | Yes, USB-A | IP66 |
| CL28R | 2,000 lumens | 360 h (Low) | Built-in 10,000mAh battery, USB-C charging | Yes, USB-A and USB-C | Drop rated to 1.5 m |
| CL30R | 650 lumens | 400 h (Eco, with 3500mAh batteries) | Three removable 18650 (included), Micro-USB charging | Yes, Micro-USB | IPX7 |
| CL20R V2 | 300 lumens | 320 h (Moonlight) | Rechargeable pack (included) or 3 AAA batteries | No | IP65 |
| CL20R Pro | 400 lumens | 320 h (Moonlight) | Rechargeable pack (included) or 3 AAA batteries | No | IP65 |
- Best all-round outage lantern: CL26R Pro. 360-degree and downward light, up to 408 hours on its lowest setting, a magnetic top and hook for hanging, and a USB-A port to charge a phone. Its 21700 battery is removable, so a charged spare gets you going again in seconds.
- Brightest, and the biggest phone charger: CL28R. Stepless brightness up to 2,000 lumens and adjustable color temperature from warm to cool white. Its built-in 10,000mAh battery runs up to 360 hours on Low and can charge devices from USB-A or USB-C.
- Runs on spare 18650s: CL30R. Takes one, two or three 18650 batteries, so it keeps working with whatever charged cells you have. It also works as a power bank.
- AAA backup: CL20R V2 and CL20R Pro. Both run on their rechargeable pack or on three ordinary AAA batteries, so you can keep them lit even if you can't recharge. The CL20R Pro adds a motion sensor that turns the light on when you walk up to it.
- For the car kit: CP50R. The CP50R combines a 5,500-lumen spot and flood lantern with red, yellow and green roadside warning modes and a USB-A power bank output.
How to Store an Emergency Flashlight So It Works When You Need It
- Remove batteries from lights you won't use for a long time. Fenix's manuals recommend this to avoid damage from battery leakage or accidental activation.
- Top up rechargeable lights on a schedule. For example, the HM70R manual recommends recharging a stored headlamp every four months to keep the lithium-ion battery healthy.
- Lock out or loosen the tail cap. This stops a light from turning on in a bag and draining itself.
- Keep spare batteries of every type your lights accept, and store them somewhere cool and dry. Our lithium-ion battery safety guide covers storage and charging.
- Test your lights twice a year, for example when the clocks change.
Frequently Asked Questions
What is the best type of flashlight for emergencies?
A durable, waterproof flashlight that runs on more than one battery type and has a long-running low mode. A light that takes a rechargeable cell plus a common backup, such as AA or CR123A, keeps working even if you can't recharge it.
Should an emergency flashlight be rechargeable or use regular batteries?
Ideally both. Rechargeable batteries are cheaper and more convenient day to day, while AA or CR123A cells let you keep going during a long outage. Lights like the Fenix PD35 V3.0 and LD22 V2 accept either.
How many lumens do I need in a survival flashlight?
For most emergency tasks, 100 to 300 lumens is enough. Higher output helps for searching or signaling over distance, but it drains the battery faster. See our flashlight lumens chart for more.
How long will a flashlight last in a power outage?
It depends on the mode. On their lowest settings, the lights in this guide run from 42 hours (PD36R Pro, Eco) to 300 hours or more (PD35 V3.0 at 300 hours and LD22 V2 at 319 hours on Eco, and the CL26R Pro lantern at 408 hours). Peak output usually lasts a few hours at most.
Is a waterproof flashlight necessary for an emergency kit?
Yes. Storms and floods are among the most common emergencies. An IP68-rated light is dustproof and can be submerged, so rain or a dunking won't take it out of service.
Are camping lanterns safer than candles during a power outage?
Yes. An LED camping lantern has no open flame, so it can't start a fire if it's knocked over, and it lights a whole room more evenly than candles. Many Fenix lanterns also run for hundreds of hours on low and can charge a phone.
Not sure which battery your light takes? Our flashlight battery sizes guide explains 18650, 21700, CR123A and AA, or browse the full Fenix flashlight lineup.
