Introduction
Thank you for purchasing Sofirn products. The HS20 is a powerful headlamp with dual LEDs for two distinct beam patterns, making it suitable for various activities such as working, running, hiking, and more. Powered by a single 18650 battery and featuring a user-friendly interface, the HS20 is designed to be a reliable partner for everyday use.
Two versions of the HS20 are available: XHP50.2+LH351D and SFT40+LH351D. The XHP50.2+LH351D version provides higher lumen output, while the SFT40+LH351D version offers a longer beam distance.
Safety Instructions
- The HS20 is a powerful headlamp. Never point the beam directly at a person, animal, or moving vehicle, as this could cause retinal damage. Keep out of reach of children.
- Operating the headlamp in Turbo or High mode for extended periods will cause it to warm up. This is normal.
- The HS20 is designed for use with an 18650 rechargeable battery.
- Ensure the battery is installed correctly according to polarity.
- Avoid hitting or dropping the headlamp to prevent damage.
Setup
Battery Installation
To install the 18650 battery:
- Unscrew the tail cap of the headlamp.
- Insert one 18650 battery with the positive (+) terminal facing towards the head of the lamp.
- Screw the tail cap back on securely.
Operating Instructions
The throw (spotlight) and flood (floodlight) beams can be operated independently. The operation for both is identical. The dual switches control all headlamp functions as described below.
From OFF
- Single Click (Throw Button): Turns on Throw mode. Press and hold to cycle through modes: Low → Medium → High. Single click again to turn off.
- Double Click (Throw Button): Activates Turbo mode. Single click to turn off.
- Triple Fast Clicks (Any Button): Activates lockout mode. Repeat triple-click to cancel lockout.
- Press and Hold (Throw Button): Turns on Eco mode. Continue holding for more than 1 second to enter standard mode (Low → Medium → High). Single click to turn off.
From ON
- Single Click (Throw Button): Turns off the headlamp.
- Double Click (Any Button): Activates Turbo mode. Another single click returns to the previously used mode.
- Triple Clicks (Any Button): Cycles through beam patterns: Throw only → Flood only → Throw + Flood.
- Long Press (Any Button): Cycles through brightness levels: Low → Medium → High.
Maintenance
- Disassembling the sealed head of the headlamp can damage the unit and will void the warranty.
- Sofirn Ltd. recommends using high-quality, reputable brand batteries. Damage caused by battery leakage is not covered under warranty.
- Remove the battery if the headlamp will not be used for an extended period to prevent self-discharge or accidental activation.
- For storage or transportation, unscrew the tail cap by half a turn or remove the battery entirely.
- Every 6 months, clean the threads with a clean cloth and apply a thin layer of silicone grease.
- To maintain proper waterproofing, replace worn-out O-rings with approved spare parts.
Troubleshooting
Regularly clean battery contacts, as dirty contacts can impair headlamp performance. If you experience issues such as flickering, intermittent illumination, or failure to turn on, consider the following:
- Reason A: The battery needs replacement.
Solution: Replace the battery with an approved, fully charged battery. - Reason B: Threads, PCB board contacts, or other contacts are dirty.
Solution: Clean the contact points with a cotton swab lightly soaked in rubbing alcohol. - Reason C: The headlamp does not turn on upon first use.
Solution: Ensure you have removed any insulation sticker from the battery before first use.
If these methods do not resolve the issue, please refer to the warranty policy or contact your authorized distributor for further assistance.
Specifications
- Emitter: XHP50.2 / SFT40 + LH351D LED with a lifespan of up to 50,000 hours
- Battery Options: 1x 18650 Li-Ion battery
- Operating Voltage: 2.8V - 4.5V (18650 battery)
- Dimensions: 85.3 mm (length) × 48mm (height) × 26mm (tube diameter)
- Weight: 79 grams (without batteries)
- Headlamp Body: Aerospace-grade aluminum alloy, CNC manufactured to military-grade specification Type III hard-anodized, anti-abrasive finish for a solid build, anti-crash geometry, and efficient heat exchange.
- Lens: Toughened mineral glass, scratch and wear resistant
- Automatic Step-down: Turbo mode automatically steps down to High mode to prevent overheating.
- Waterproof Rating: IP68 (underwater 2 meters / 6.56 ft depth)
Circuit Protection
- Double-click to activate Turbo mode; it automatically steps down to High mode to prevent overheating.
- Automatically steps down to lower modes when the 18650 battery does not have sufficient power.
- Low power indicator: If the battery is running low when turned on, the lamp will blink once a minute as a reminder.
- Improper battery installation protection: If the battery is installed incorrectly, the headlamp will not turn on, but no damage will occur.
Battery Specifications
| Battery Type | Dimension & Quantity | Nominal Voltage | Compatibility |
|---|---|---|---|
| Rechargeable Lithium-ion Battery | 18650 x 1 | 3.7 V | Yes |
ANSI/NEMA FL1 Performance Chart
The following tables detail the performance parameters of the Sofirn HS20 headlamp according to ANSI/NEMA FL1 standards. Parameters are based on laboratory tests and may vary with different batteries or environmental conditions. Turbo mode automatically throttles down to High mode to prevent overheating. To reactivate Turbo, double-click the switch. Running time for Turbo is accumulated.
Technical Parameters (XHP50.2 + LH351D)
| Mode | Eco | Low | Medium | High | Turbo |
|---|---|---|---|---|---|
| Luminous Flux (lm) - Throw(XHP50.2) | 10 | 60 | 300 | 900 | 2300 |
| Luminous Flux (lm) - Flood(LH351D) | 5 | 40 | 150 | 400 | 1000 |
| Luminous Flux (lm) - Throw-Flood | 12 | 100 | 350 | 1000 | 2700 |
| Running Time (hrs) - Throw(XHP50.2) | 312 | 38.3 | 10 | 3.5 | 2.9 |
| Running Time (hrs) - Flood(LH351D) | 312 | 45.3 | 14 | 4 | 2.9 |
| Running Time (hrs) - Throw-Flood | 150 | 26.3 | 8 | 2 | 1.6 |
| Distance (m) - Throw(XHP50.2) | 9 | 24 | 47 | 87 | 136 |
| Distance (m) - Flood(LH351D) | 5.5 | 15 | 29 | 47 | 75 |
| Intensity (cd) - Throw(XHP50.2) | 21 | 148 | 565 | 1903 | 4647 |
| Intensity (cd) - Flood(LH351D) | 7.5 | 57 | 207 | 553 | 1418 |
| Impact Resistant | 1 meter / 3.28 feet | ||||
Technical Parameters (SFT40 + LH351D)
| Mode | Eco | Low | Medium | High | Turbo |
|---|---|---|---|---|---|
| Luminous Flux (lm) - Throw(SFT40) | 7 | 60 | 200 | 700 | 1600 |
| Luminous Flux (lm) - Flood(LH351D) | 5 | 40 | 150 | 400 | 1000 |
| Luminous Flux (lm) - Throw-Flood | 12 | 100 | 300 | 900 | 2100 |
| Running Time (hrs) - Throw(SFT40) | 312 | 38.3 | 10 | 3.5 | 2.9 |
| Running Time (hrs) - Flood(LH351D) | 312 | 45.3 | 14 | 4 | 2.9 |
| Running Time (hrs) - Throw-Flood | 150 | 26.3 | 8 | 2 | 1.6 |
| Distance (m) - Throw(SFT40) | - | 17 | 72 | 138 | 212 |
| Distance (m) - Flood(LH351D) | - | 6 | 28 | 47 | 74 |
| Intensity (cd) - Throw(SFT40) | - | 42 | 1325 | 4750 | 11275 |
| Intensity (cd) - Flood(LH351D) | - | 10 | 205 | 562 | 1367 |
| Impact Resistant | 1 meter / 3.28 feet | ||||
User Tips
- Optimal Performance: For the brightest output and longest runtime, ensure your 18650 battery is fully charged before use.
- Versatile Lighting: Experiment with the dual-beam feature (spotlight for distance, floodlight for wide area) to find the best illumination for different tasks and environments.
- Independent Control: Familiarize yourself with the dual-switch operation. This allows for independent control of the throw and flood beams, offering greater flexibility in lighting.
- Lockout Mode: Use the lockout feature (triple fast clicks) when transporting or storing the headlamp to prevent accidental activation and battery drain.
Warranty and Support
Sofirn Limited provides support for its products. If you have any questions or require assistance, please contact us using the information below. If your product is found to be defective, please contact us for a replacement within the warranty period.
Contact Information
- Telephone: +86-755-23440047
- Fax: +86-755-23440141
- Websites: www.sofirnlight.com, sofirn.aliexpress.com, www.sofirn.cn
- Email: us@sofirnlight.com, eu@sofirnlight.com, wholesale@sofirn.cn
Manufacturer Details
Manufacturer: Shenzhenshi Jinba Technology Co., Ltd
Address: 1/F to 9/F, 1st Building, NO.110 Tenglong Industrial Center, Guanlan Street, Longhua New District, Shenzhen 518000, China
For the full user manual in PDF format, please refer to the official document available at Sofirn HS20 User Manual (PDF).