The Sofirn SR23 Rechargeable flashlight options three TN-3535 warmer-than-6000K emitters and a UV proper beside them. USB-C charging, too! Learn on for testing!
Official Specs and Options
Right here’s a hyperlink to the Sofirn SR23 Rechargeable flashlight product web page.
Variations
Appears like there’s only one model of the Sofirn SR23 Rechargeable flashlight.
Worth
The Sofirn SR23 Rechargeable flashlight lists for someplace within the $60 vary, however is out there proper now round $41.
What’s Included
- Sofirn SR23 Rechargeable flashlight
- Sofirn 5000mAh 21700
- Charging cable
- Lanyard
- Spare o-rings (2)
- Guide
Package deal and Guide
Construct High quality and Disassembly
The Sofirn SR23 Rechargeable flashlight has an attention-grabbing design function that Sofirn hasn’t used a lot (however perhaps has used at the very least as soon as earlier than). There’s a silicone grip space alongside the cell tube right here!
The construct high quality is nice. Each the top and tail have good thick springs.
The cell tube has anodized threads and on each ends.
Dimension and Comps
Dimension: 31.5 mm x 114.9 mm
Weight: 86g(with out battery)
If the flashlight can headstand, I’ll present it right here. If it might tailstand, I’ll additionally present that right here!
Right here’s the take a look at gentle with the venerable Convoy S2+. The model under is a customized laser-engraved Convoy S2+ host by GadgetConnections.com. I did a full submit on an engraved orange host proper right here! Or go straight to GadgetConnections.com to purchase your Convoy S2+ now!
Additionally within the photograph above, my Normal Reference Materials (SRM) flashlight is the Hanko Machine Works Trident, an 18350 gentle. Whereas I’ve not reviewed or examined the Gunner Grip model seen right here, I’ve examined a Hanko Machine Works Trident Whole Tesseract in brass. I really like the Trident, and it’s a putting distinction to the cheap Convoy S2+, one other nice SRM.
Retention and Carry
A two-way friction-fit pocket clip is included.
A lanyard can be included. It might connect to the pocket clip, however there’s a loop within the tailcap too.
The tailcap magnet is robust sufficient to carry the Sofirn SR23 Rechargeable flashlight securely.
Energy and Runtime
The Sofirn SR23 Rechargeable flashlight is powered by one lithium-ion cell. Sofirn contains this commonplace flat-top 5000mAh 21700.
The cell goes into the Sofirn SR23 Rechargeable flashlight within the normal method – constructive finish towards the top. It’s not proven right here, however the tailcap has a bit brand to point the cell path, too.
The Sofirn SR23 Rechargeable flashlight gives solely ramping, so I examined turbo twice and simply a few different random modes. Turbo steps down shortly, however curiously, there’s some variation in the way it steps down. In a single take a look at, it held regular for round a minute. In one other, it dips almost instantly, then holds regular for round 1.5 minutes.
After the sunshine steps all the way down to round 900 lumens, output may be very regular for almost 2.5 hours.
The temperature strains in these charts are included as normal context, not exact measurements. The values signify the vary (min to max) throughout testing, however shouldn’t be taken as actual readings. Temperature sensors are hooked up nevertheless possible and never at all times on the bezel or hottest spot (assuming that may even be clearly outlined). Even with excellent placement, too many variables have an effect on temperature to definitively state a particular max worth.
Charging
The Sofirn SR23 Rechargeable flashlight gives USB-C charging. The cost port is within the head.
A USB-C to USB-C charging cable is included.
Charging seems high quality and is in line with C or A enter. Charging takes simply over 3 hours.
Whereas charging, the indicator swap is pink. When charging is full, the swap turns inexperienced.
Modes and Currents
| Mode | Mode Claimed Output (lm) | Claimed Runtime | Measured Lumens | Tailcap Amps |
|---|---|---|---|---|
| Turbo | 3300-1100 | 90s-150m | 2808 (0s) 2752 (30s) |
8.45 |
| Lowest | 5 | 290h | 5 | [low] |
| UV Excessive | – | 4.5h | – | 0.66 |
| UV Low | – | 23h | – | 0.15 |
Pulse Width Modulation
Neither of the regular modes makes use of PWM.
Click on right here to see a “baseline” – a chart with nearly no gentle hitting the sensor.
Then there’s the Ultrafire WF-602C flashlight, which has a number of the worst PWM I’ve seen. It’s so dangerous that I used a submit about it to clarify PWM! Listed here are a number of timescales (10ms, 5ms, 2ms, 1ms, 0.5ms, 0.2ms) to make evaluating this “worst” PWM gentle to the take a look at gentle simpler. That submit additionally explains why I didn’t take a look at the WF-602C on the normal 50us scale.
Consumer Interface and Operation
The Sofirn SR23 Rechargeable flashlight has two e-switches. They each have an indicating function, which will be seen under.
While you flip the Sofirn SR23 Rechargeable flashlight on, the swap signifies the approximate cell voltage for round 5 seconds, as follows:
Inexperienced stable: 75-100%
Inexperienced flashing: 50-75%
Pink stable: 25-50%
Pink flashing: 1-25%
Right here’s a person interface desk!
| State | Motion | Consequence |
|---|---|---|
| Off | Click on UV swap | UV on (reminiscence) |
| UV on | Maintain UV swap | Iterate Low/Excessive UV |
| UV on | Click on UV swap | Off |
| Off | Click on LED swap | LED on (reminiscence) |
| LED on | Maintain LED swap | Stepless LED output enhance (to both endpoint) |
| LED on | Launch maintain, then maintain once more | Change ramp path |
| Any | Click on LED swap 2x | LED Turbo |
| Turbo | Click on LED swap 2x | Iterate between Low and Turbo |
| Any | Click on LED swap 3x | Strobe |
| Strobe | Click on LED swap 3x | Iterate between SOS and Strobe |
| Off | Maintain LED swap | Low |
| Off | Click on LED swap 4x | Iterate Lockout |
LED and Beam
Three of the emitters seen under are TN-3535 emitters, at a claimed 6500K-7000K. The opposite is UV.
The three white LEDs function in unison; there is no such thing as a mode the place they function individually.
LED Colour Report (CRI and CCT)
The declare right here is “6500-7000K” however I measured nicely under that, peaking at underneath 6000K for the best mode. That’s good (for me, and possibly for you). The Duv is constructive, which suggests you may choose up some inexperienced within the output. CRI is low.
CCT (Correlated Colour Temperature) refers back to the measurement of the colour look of sunshine, expressed in Kelvins (Ok), which signifies whether or not the sunshine is heat (yellowish) or cool (bluish). A decrease CCT (under 3000K) is taken into account heat gentle, whereas the next CCT (above 5000K) provides cooler, bluish gentle.
CRI (Colour Rendering Index) is a measure of how precisely a light-weight supply renders colours compared to pure daylight. Scored on a scale from 0 to 100, larger CRI values point out that colours seem extra true to life and vibrant, just like how they might look underneath the solar.
Beamshots
These beamshots at all times have the next settings: f8, ISO100, 0.3s shutter, and guide 5000K publicity. These images are taken at ground degree, and the beam hits the ceiling round 9 ft away.
Tint vs BLF-348 (KillzoneFlashlights.com 219b model) (affiliate hyperlink)
I preserve the take a look at flashlight on the left and the BLF-348 reference flashlight on the fitting. These images are taken round 18 inches from the door.
I evaluate every little thing to the KillzoneFlashlights.com 219b BLF-348 as a result of it’s cheap and has one of the best tint!
Abstract and Conclusion
At $40, the Sofirn SR23 Rechargeable flashlight is an effective method to get excessive output and UV. It’s significantly good when you’re in search of a 900-lumen flashlight, as a result of as soon as any mode steps down, the sunshine holds 900 lumens very steadily. That’s nice! I recognize UV having a devoted swap, and in any other case probably not getting in the way in which of white LED output. USB-C charging seems nice, and I’m glad that this gentle makes use of a regular cell, too!
The Large Desk
^ Measurement disclaimer: Testing flashlights is my passion. I exploit hobbyist-level tools for testing, together with some I made myself. Strive to not get buried within the particulars of producer specs versus measurements recorded right here; A specific amount of distinction (say, 10 or 15%) is completely affordable.
What I like
- Cheap price
- Separate swap for UV
- Good charging
- Hotter output than claimed
What I don’t like
Notes
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