SOFIRN SK30 Tactical Flashlight User Manual

1. Introduction

Thank you for choosing the SOFIRN SK30 Tactical Flashlight. This powerful and versatile flashlight is designed for various applications, offering high brightness, multiple modes, and robust construction. Please read this manual carefully before using the flashlight to ensure proper operation and maintenance.

Figure 1: SOFIRN SK30 Tactical Flashlight highlighting key features (3000LM, 392M beam, 42H runtime, IPX8, 1M drop test, Type-C rechargeable).

2. Package Contents

Please check the package contents upon arrival:

• SOFIRN SK30 Flashlight
• 21700 Rechargeable Battery (pre-installed or separate)
• USB-C Charging Cable
• Lanyard
• Holster
• Spare O-rings
• User Manual (this document and a printed version)

Figure 2: Contents included in the SOFIRN SK30 package.

3. Setup

3.1 Battery Installation

1. Unscrew the tail cap of the flashlight.
2. If the battery is not already installed, insert the included 21700 battery with the positive (+) end facing towards the flashlight head.
3. Important: Before first use, remove the plastic insulating disc located between the battery and the tail cap (if present).
4. Screw the tail cap back on tightly to ensure proper electrical contact and water resistance.

Figure 3: Remove the battery insulator before first use.

3.2 Initial Charging

It is recommended to fully charge the battery before the first use.

1. Locate the USB-C charging port on the flashlight body. It is typically covered by a rubber flap for waterproofing.
2. Open the rubber flap and connect the USB-C cable to the port and a USB power source (e.g., computer, wall adapter).
3. The indicator light near the charging port will show the charging status:
• Red: Charging
• Green: Fully Charged
4. Once charging is complete, disconnect the cable and securely close the rubber flap to maintain water resistance.

4. Operating Instructions

4.1 General Operation

The SK30 features a dual-switch design: a tail switch for power and momentary activation, and two side switches for mode selection.

• Tail Switch:
• Full Press: Turns the flashlight ON or OFF.
• Half Press (from OFF): Momentary ON. Release to turn OFF.
• Side Switches (when ON):
• Single Click (Mode Button): Cycles through modes: ECO → Low → Medium → High. The flashlight has mode memory and will turn on in the last used general mode.
• Double Click (Mode Button): Activates Turbo mode directly.
• Triple Click (Mode Button): Activates Strobe mode directly.
• Press and Hold (Mode Button): From OFF, press and hold for 1 second to activate ECO mode. From ON, press and hold for 0.5 seconds to turn OFF.
• Tactical Switch (smaller side button): From OFF, press and hold for 1 second to activate Strobe mode. From ON, single click to activate Strobe mode.

Figure 4: Available lighting modes: ECO, Low, Medium, High, Turbo, and Strobe.

4.2 Battery Level Indicator

The indicator light near the charging port also displays the battery status when the flashlight is ON:

• Green: 75% - 100% remaining battery
• Orange: 50% - 75% remaining battery
• Red: 25% - 50% remaining battery
• Flashing Red: Less than 25% remaining battery (recharge soon)

Figure 5: Features including IPX8 waterproof rating, 1M drop resistance, tactical design, and the hidden USB-C charging port with indicator light.

5. Maintenance

• Cleaning: Clean the threads, O-rings, and electrical contacts regularly with a clean cloth.
• Lubrication: Apply a thin layer of silicone grease to the O-rings and threads periodically to maintain water resistance and smooth operation. The threads are factory-lubricated.
• O-ring Replacement: If O-rings become damaged, replace them with the provided spares to maintain the IPX8 waterproof rating.
• Battery Care:
• Avoid over-discharging the battery. Recharge when the indicator shows low battery.
• If the flashlight will not be used for an extended period, remove the battery or store it partially charged (around 50%) to prolong its lifespan.

6. Troubleshooting

• Flashlight not turning on:
• Ensure the battery is installed correctly with the positive end towards the head.
• Check if the plastic insulating disc has been removed from the battery.
• Tighten the tail cap securely.
• Charge the battery fully.
• Intermittent light or flickering:
• Clean the battery contacts and flashlight contacts with an alcohol swab.
• Ensure the tail cap and head are screwed on tightly.
• Check the battery for damage.
• Reduced brightness or runtime:
• The battery may need recharging.
• The battery may be nearing the end of its lifespan and require replacement.

7. Specifications

Figure 6: Detailed performance specifications for each mode.

Note: The parameters mentioned above are based on tests conducted under laboratory conditions using a 21700 battery with a capacity of 5000mAh. Variations in temperature, battery capacity, and environmental factors may affect the test results.

Figure 7: Illustration of the SOFIRN SK30's beam distance, reaching up to 392 meters.

8. User Tips

• The SK30 is a compact yet very powerful flashlight, suitable for various uses including outdoor activities and professional security work.
• The dual-switch interface provides quick access to different modes, including instant Turbo and Strobe, making it highly versatile.
• The flashlight features mode memory, so it will turn on in the last used general mode (ECO, Low, Medium, High).
• The threads are factory-coated and lubricated, contributing to its smooth operation and durability.

9. Warranty and Support

SOFIRN products are manufactured to high-quality standards. For warranty information, technical support, or any issues not covered in this manual, please contact your retailer or SOFIRN customer service.

A more detailed user manual in PDF format may be available for download at the following link: SOFIRN SK30 User Manual (PDF)