Product Description
Light up outdoor work, camp sites, trails, and emergencies with the Sofirn SR15 rechargeable LED flashlight. The SR15 uses four SFT25R white LEDs, a 21700 lithium battery, and USB Type-C charging in a compact aluminum-alloy body.
Key Features
- Four SFT25R high-powered white LEDs
- 4500-lumen output listed
- 6000-6500K emitting color option
- 21700 rechargeable lithium battery
- USB Type-C charging
- Charge-and-discharge or emergency power-bank function described in the source
- IP68 water resistance listed
- Aluminum-alloy body
- Reverse-polarity protection for incorrect battery installation
- Automatic temperature protection reduces output if the temperature exceeds 55°C
- Black finish
Lighting and Modes
The detailed source describes five brightness levels from 1 to 4500 lumens, stepless dimming, and emergency modes including Strobe, SOS, and Beacon. Another specification field lists High, Middle, and Low switch modes, so confirm the exact interface and mode behavior supplied with the selected unit.
Product Specifications
- Brand: Sofirn
- Model: SR15
- Light source: LED bulbs
- LED emitters: 4 x SFT25R
- Maximum output listed: 4500 lumens
- Battery: 1 x 21700 lithium battery
- Working voltage: 3.0-4.2V
- Charging: USB Type-C
- Body material: Aluminum alloy, with AL6061-T6 listed in the detailed source
- Water resistance: IP68 listed
- Head diameter: 40 mm
- Length: 130 mm
- Weight: 128 g without battery according to the detailed source
- Focus: Non-adjustable
- Zoom: No
- Color: Black
- Certifications listed: CCC, CE, FCC, and RoHS
Beam Distance Note
The source contains different beam-distance figures. One field lists 200-500 m, while the detailed description says up to 510 m. Treat the distance as a source estimate that depends on conditions, battery level, measurement method, and environment.
Battery and Charging
The listing identifies a 21700 battery and USB Type-C charging. It also describes a charge-and-discharge function for emergency device charging. Follow the supplied charging instructions, use a suitable USB power source, and do not operate or charge a damaged battery.
The source notes that the tail cap is fixed with glue and should not be unscrewed for battery replacement. It instructs users to access the battery through the head instead. Follow the manufacturer’s instructions rather than forcing the tail cap.
Outdoor Use and Safety
- Do not look directly into the LEDs or aim the beam at another person’s eyes.
- High-output operation can generate heat. Let the light cool and avoid covering the head during use.
- Keep the charging port closed and follow the manufacturer’s water-resistance guidance.
- Remove or inspect the battery if the light will be stored for an extended period.
- Use the correct 21700 battery orientation and rely on the built-in reverse-polarity protection as a safeguard, not as a reason to install the battery incorrectly.
- Keep the flashlight and battery away from children unless supervised.
Before You Buy
- Confirm that the included 21700 battery and 6000-6500K emitting-color option match your needs.
- Expect a fixed-focus, non-zoom beam.
- Confirm the actual beam-distance rating because the source lists both 200-500 m and 510 m.
- The source does not provide a complete runtime chart, charging time, USB power requirement, or independent water-resistance test details.
- Charging and emergency power-bank behavior may depend on the cable, device, battery condition, and selected variant.
Frequently Asked Questions
What battery does the SR15 use?
It uses one 21700 lithium battery, and the listing indicates that a battery is included.
How bright is it?
The source lists a maximum output of 4500 lumens.
Does it charge by USB-C?
Yes. USB Type-C charging is listed.
Is it waterproof?
IP68 water resistance is listed. Follow the manufacturer’s limits and keep the charging port properly closed.
Does it have zoom?
No. The specifications list a non-adjustable focal length and no zoom.
How far does the beam reach?
The source lists 200-500 m in one field and up to 510 m in the detailed description. Actual range depends on conditions and measurement method.
How do I replace the battery?
The source says the tail cap is fixed with glue and should not be unscrewed. It directs users to unscrew the head for battery replacement.