YAFIYGI 2 Pack Flashlight Bulbs 30 Lumen 3-Volt LED PR6 Replacement Bulb for Flashlights 3V Light Bulb Torch Flashlight Bulb with 10 Year Lifespan 41-1643 P13.5S 6000K

What these bulbs are

I’ve been looking for a simple way to breathe new life into a couple of older flashlights without turning them into science projects. The YAFIYGI 3V LED PR bulbs fit that brief. Sold as a two-pack, each drop-in LED is meant to replace a standard PR-base incandescent (often labeled PR-2/PR-6/P13.5S) in two-cell flashlights. They’re rated at 30 lumens with a cool-white 6000K tint, and the brand claims up to a 10-year lifespan. Construction is glass-and-metal—more traditional in look than the resin-encapsulated LED retrofits you sometimes see.

Worth noting: the listing’s size spec (0.12 inches long) doesn’t match what arrived. In the hand, these are standard PR-base dimensions, not tiny jewelry. They fit my bulb carriers as you’d expect for this class.

Installation and fit

Installation was as easy as it gets. I tested the bulbs in three hosts:

• A 2D-cell Maglite
• An old right-angle “military style” flashlight
• A casual hardware-store 2C-cell light

In all three, I unscrewed the head, pulled the old PR bulb, and dropped in the YAFIYGI bulb. Contact was reliable and the swap took under a minute per light. In the 2D Maglite and the right-angle light, fit was spot-on. In the 2C light, the base felt a hair tighter than the original incandescent, but it still seated without fuss. If your bulb carrier is unusually snug or made of softer plastic, expect a firm press to fully seat the base.

One practical tip: clean the contacts while you’re in there. These older lights collect oxidation on springs and sockets, and a quick rub with a pencil eraser or a dab of contact cleaner helps ensure the LED gets stable power.

Brightness and beam quality

At 30 lumens, this is a modest-output retrofit. Think “find your breaker box, check a dark closet, walk the dog at close range,” not “throw a beam down the block.” In practice, the perceived bump versus the original incandescent came less from raw output and more from the cooler color temperature and better efficiency. The beam looks cleaner and whiter, which improves contrast on reflective surfaces and makes the flashlight feel fresher overall.

Beam shape depends on the host, and this is where expectations matter. PR-base reflectors were designed around a glowing filament. Most LED retrofits, including this one, reposition the light source slightly relative to where a filament would have been. The result in my tests:

• Maglite 2D: Focus still worked, but the tight “pencil beam” spot wasn’t as crisp as with the old bulb. Usable hotspot with a wide, even spill. No distracting artifacts.
• Right-angle flashlight: A pleasant, uniform flood with a defined center. Great for close tasks, toolboxes, and tent use.
• 2C-cell light: Slight ring at the outer spill in a white-wall test; unnoticeable outdoors.

The 6000K tint is on the cool side. It punches well on pavement, metal, and plastics, but it’s not as gentle for reading printed maps or color-sensitive tasks. No noticeable tint shift or blue fringe in the units I tested.

Runtime and efficiency

LEDs shine—literally and figuratively—when it comes to sipping power. On a pair of fresh alkaline D cells, my Maglite ran notably longer before dimming compared to the stock incandescent. I don’t have a lab bench here, but the practical difference is obvious: hours of usable light without the fast fade and amber cast you see as incandescent bulbs pull batteries down.

The bulbs also stay cool. Even after a few extended runs, the head of the flashlight was only slightly warm. That’s kind to old plastic lenses and o-rings.

One quirk to be aware of: in very low battery conditions, I saw a brief flicker as the cells sagged under load. Fresh batteries eliminated it. That behavior is common on simple LED retrofits that don’t use sophisticated regulation—it’s not a defect so much as a reminder to change batteries.

Durability and build

These are glass-envelope LEDs, which means they look like traditional bulbs and drop into carriers without fuss. The upside versus a filament bulb is obvious: no fragile filament to snap. I shook and lightly knocked the host lights as part of my test, and the LEDs stayed steady and intact.

The downside is that glass is glass. If you tend to throw flashlights into a toolbox with loose sockets and nails, keep a spare in the pack or store the light sensibly. The metal base and solder points looked clean on both bulbs I received, with no sloppy flux residue or bent pins.

As for the 10-year lifespan claim, that depends heavily on use. For an emergency drawer light or occasional garage grab-and-go, I could believe multiple years before noticeable fade. If you’re a daily heavy user, the thermal and electrical environment of the host will matter. In short: far tougher than an incandescent, not as bulletproof as a modern purpose-built LED module.

Compatibility notes

• Voltage: These are for 3V (two-cell) flashlights. Don’t drop them into 3- or 4-cell lights and expect the same results; you’ll risk overdriving or cooking the LED.
• Base type: P13.5S/PR-base. If your flashlight uses a different base (e.g., bi-pin, screw base), this won’t fit.
• Polarity: In my hosts, orientation wasn’t an issue. The base and tip made proper contact and the bulbs lit immediately.
• Fit: Some older plastic bulb carriers can be tight. If seating feels stiff, don’t force a misalignment; back out and ensure the base is straight.

Where these bulbs excel

• Reviving a sentimental or rugged old flashlight where you want to keep the classic form factor
• Emergency kits and glove boxes, where shelf life and reliability matter more than raw lumens
• Daily utility tasks around the house, garage, or campsite within 10–20 feet
• Users who value a simple swap—no rewiring, no new head, no custom drop-in

What they’re not

• A high-output upgrade. Thirty lumens is honest and useful, but it won’t compete with modern LED flashlights or specialized Maglite LED conversions that produce 100+ lumens.
• A beam perfectionist’s dream. Focus is decent but not razor sharp, and some hosts will show minor rings or a broader hotspot.
• A universal fit for every PR-base light ever made. Tolerances vary. Most will be fine; a few may be snug.

Value

The two-pack format is the right call. You fix two lights, or you fix one and keep a spare. For the money, you’re buying reliability and convenience more than performance bragging rights. In that context, it’s fair value. If your goal is to push an old Maglite into modern lumen territory, you’ll want a more advanced (and pricier) LED module or, frankly, a new flashlight.

The bottom line

I came to these YAFIYGI bulbs looking for a painless way to modernize a few older lights I still like to use. They delivered: clean white light, better runtime, and easy installation with no drama. The beam isn’t perfect and the output won’t wow anyone, but for around-the-house and emergency use, the upgrade feels worthwhile—especially if you’ve been living with the warm, dim amber of a tired incandescent.

Recommendation: I recommend these bulbs if you want a simple, reliable LED swap for a two-cell PR-base flashlight you already own. They’re great for extending the useful life of a favorite light and for building dependable, low-maintenance kits. If you’re chasing high brightness or precision beam quality, skip these and look at dedicated LED conversion modules or a modern flashlight instead.