DL02 2000LM Professional Diving Flashlight with Extended Runtime

Core Overview

Built from aircraft-grade aluminum alloy with an IP68 depth rating of 100 meters, the DL02 features the same proven magnetic tail switch, five-mode operation, and four-stage battery indicator system as the premium DL01 series — packaged in a slightly more compact 40 × 36 × 151mm form factor with a 205-gram dry weight. The 26650 cell format provides higher continuous discharge capability and greater total energy capacity, positioning the DL02 as the endurance specialist in SUPERFIRE’s professional diving line for B2B distributors serving technical diving shops, commercial diving contractors, and marine research institutions.

Target Applications:

Technical diving with extended bottom times
Underwater photography and videography (multi-hour sessions)
Commercial diving inspection and maintenance
Search-and-rescue extended-duration operations
Marine biology long-duration observation dives
Instructor-led multi-dive training sessions

Key Product Advantages

The DL02’s defining advantage is its 26650 lithium-ion cell rated at 5000mAh — delivering approximately 4.5 hours of continuous high-mode (2000LM) output, with proportionally longer runtimes at medium and low settings. This represents the longest single-battery runtime in the SUPERFIRE diving lineup, enabling full-day dive operations on a single charge. The higher continuous discharge rating of the 26650 format comfortably supports the 7.14A peak current draw at maximum output without voltage sag or thermal concerns.

The P50 LED core generates 2000 lumens of white light at 7000K color temperature, with a 250-meter beam reach through precision-engineered wide-angle optics. Drawing up to 20W input (26.41W peak input power), the DL02 provides substantial illumination headroom for turbid water penetration, long-distance signaling, and underwater photography fill lighting. The optical lens maintains uniform beam distribution across the full output range, ensuring consistent beam quality whether operating at 2000 lumens or at lower conservation modes.

The magnetic tail switch operates through the sealed aluminum body with zero mechanical penetration — the same proven architecture as the DL01 series. Five fully independent modes (High → Medium → Low → Strobe → SOS) cycle with a single tap, with dual quick-off features: a single press after 15 seconds of continuous use in any mode returns directly to off, and a 2-second long-press provides instant shutdown from any mode. Mode memory retains the last-used setting through power cycles, saving divers from cycling back to their preferred mode on each activation.

At 40 × 36 × 151mm and 205 grams, the DL02 is slightly more compact than the DL01 series despite housing the larger 26650 cell. The battery tube is also mechanically compatible with 18650 cells using an optional sleeve adapter, providing logistical flexibility for dive operations that have standardized on the 18650 format for consistency across multiple devices. This dual-compatibility design is particularly valued by dive shops and rental fleets managing mixed battery inventories.

Six independent protection features safeguard both the flashlight and battery: reverse polarity protection prevents damage from incorrectly inserted cells; low-voltage cutoff terminates discharge before deep-discharge damage occurs; low-voltage warning provides visual alert before cutoff; over-discharge protection maintains safe storage voltage; power-saving program optimizes driver efficiency; and the four-stage LED indicator (blue/green/red/off) provides continuous battery status feedback throughout the dive.

Specifications of DL02 Tactical Flashlight

Parameter	Specification
Model	DL02
Product Type	Professional Diving Flashlight
LED Type	P50
Rated Power	20W (MAX)
Lumens	2000LM
Beam Distance	250m
Color Temperature	7000K (White Light)
Rated Voltage	DC 3.7V
Battery	1× 26650 / 5000mAh (Rechargeable, User-Replaceable, 3C Certified)
Battery Compatibility	26650 (Native) / 18650 (with Adapter Sleeve)
Runtime	Approx. 4.5 Hours (High Mode)
Maximum Diving Depth	100 Meters (328 Feet)
Waterproof Rating	IP68
Drop Resistance	1 Meter
Light Modes	High → Medium → Low → Strobe → SOS
Switch Type	Magnetic Tail Switch (Glove-Friendly)
Dimensions	40 × 36 × 151mm
Net Weight (Flashlight Only)	205g
Material	T6061 Aluminum Alloy (Hard Anodized)
Color	Black
Beam Type	Fixed Focus (Wide-Angle Optical Lens)
Mode Memory	Yes (Recalls Last Mode After 15s Continuous Use)
Battery Indicator	4-Stage LED (Blue / Green / Red / Off)
Circuit Protection	Reverse Polarity, Low-Voltage Cutoff, Low-Voltage Alert, Over-Discharge Protection, Power-Saving Program
Barcode	6977502517463

Power and Current Data

Mode	Input Voltage	Input Current	Input Power
High	DC 3.7V	7.14A	26.41W
Medium	DC 3.7V	0.52A	1.92W
Low	DC 3.7V	0.30A	1.11W
Strobe	DC 3.7V	0.22–0.30A	0.81–1.11W
SOS	DC 3.7V	0.01–0.50A	0.037–1.85W

Standard Package Contents

DL02 Diving Flashlight ×1
26650 5000mAh Rechargeable Battery (3C Certified, SUPERFIRE Branded) ×1
AC16 Battery Charger (SUPERFIRE Branded, Extended) ×1
Diving Wrist Lanyard (Black) ×1
Spare O-Ring Set (Black, 2pcs) ×1 set
Silicone Ring PE Storage Bag ×1
Blister Tray (V2.0) ×1
Retail Display Hanging Box (SUPERFIRE Branded) ×1
Sticker ×1
Multi-Language User Manual ×1
Anti-Counterfeit Security Label ×1

Details of SUPERFIRE G19 Tactical Flashlight

Video

常见问题解答

Why choose the DL02 over the DL01-S — what is the main differentiator?

The DL02 prioritizes runtime over maximum lumen output. While the DL01-S delivers 2100LM for approximately 3 hours, the DL02 delivers 2000LM for approximately 4.5 hours — a 50% runtime advantage at nearly equivalent brightness. The trade-off is a slightly heavier light (205g vs. 195g) and a larger battery format (26650 vs. 21700). Choose the DL02 when your dive profile demands extended illumination without battery swaps; choose the DL01-S when maximum output in a lighter package takes priority.

Can I use 18650 batteries in the DL02?

Yes, the DL02 body tube accommodates 26650 cells natively and is compatible with 18650 cells when using an appropriate sleeve adapter. However, high-mode performance (7.14A current draw) may exceed the continuous discharge rating of some 18650 cells. Using an 18650 will also reduce runtime proportionally to the cell’s capacity (typically 3000–3500mAh vs. the native 5000mAh). For maximum performance and the rated 4.5-hour runtime, the included 26650/5000mAh cell is recommended.

How does the magnetic switch perform at extreme depths compared to mechanical switches?

The magnetic switch is inherently depth-immune because it operates through the sealed aluminum body wall with no moving parts exposed to ambient pressure. Mechanical push-button switches experiencing 10 atmospheres (100 meters) of external pressure may become stiff, unresponsive, or prone to seal degradation over repeated pressure cycles. The DL02’s magnetic design eliminates this failure mode entirely — the actuation force is consistent from surface to 100 meters, and the switch’s operational life is independent of dive depth and frequency.

What is the actual runtime difference between High, Medium, and Low modes?

Using the included 26650/5000mAh cell at 25°C: High mode (2000LM, 7.14A draw) delivers approximately 4.5 hours; Medium mode (0.52A draw) delivers approximately 30–35 hours; Low mode (0.30A draw) extends to approximately 50+ hours. These estimates are based on constant-output laboratory testing. In real-world diving use, thermal conditions (cold water accelerating discharge), battery age, and intermittent usage patterns will affect actual runtime. The 4.5-hour high-mode figure provides a conservative planning baseline for dive operations.

What maintenance schedule do you recommend for rental fleet or commercial operations?

For high-utilization environments (rental fleets, commercial dive operations): after each day’s use, rinse in fresh water with tail cap tightened and inspect the lens for scratches or impact marks. Weekly: remove and inspect O-rings, clean grooves, apply silicone grease. Monthly: test battery capacity with a digital analyzer and retire cells showing below 80% of rated capacity. Maintain a spare parts inventory of O-rings (replaced at first sign of cracking or flattening), silicone grease, and replacement lenses. Chargers should be tested quarterly with known-good batteries to verify proper termination voltage. A maintenance log tracking dive hours per unit enables predictive parts replacement.

Customization & OEM Services

SUPERFIRE provides full-spectrum OEM/ODM services for the DL02 Diving Flashlight, supporting dive equipment brands, commercial diving contractors, marine safety distributors, government procurement, and private-label operations worldwide.

Laser Engraving: High-precision laser marking of your brand logo, model designation, and regulatory markings directly onto the aluminum body — permanent, non-fading, and resistant to saltwater corrosion
Color Anodizing: Custom hard-anodized body colors beyond standard black (minimum order quantities apply); popular options include safety orange, navy blue, and gunmetal gray
Lanyard Branding: Custom-printed silicone wrist lanyards with your logo and contact information
Charger Branding: Custom-branded AC16 battery chargers and accessories with your company identity

Retail Box Design: Full creative service for packaging artwork, including die-cut window boxes, rigid magnetic-closure boxes, or eco-friendly kraft packaging
Blister Tray Customization: Custom-formed blister trays for secure product presentation and retail display
Multi-Language Documentation: User manuals, quick-start guides, and warranty cards translated and designed in your required languages with your branding
Anti-Counterfeiting: Custom holographic security labels, QR-code verification systems, and unique serial numbering for brand protection

LED Configuration: Alternative LED options for different color temperatures (warm white 4000K–5000K for photography; cool white 6500K+ for maximum penetration)
Beam Profile Tuning: Custom reflector and lens combinations for tighter spot (long-range signaling) or wider flood (close-up photography/filming)
Mode Programming: Fully customizable mode sequences, output levels, and special modes (e.g., dive timer flash, battery-level blink code, lockout mode)
Battery Configuration: Support for alternative cell formats with custom body tube machining; dual-cell extended-body configurations for extreme endurance
Accessory Ecosystem: Custom-designed mounting clamps for underwater camera rigs, Goodman handles, helmet mounts for commercial diving, and tether systems

IP68 certification documentation with depth rating validation
CE, FCC, RoHS compliance for all standard and custom configurations
Material traceability certificates for aluminum alloy and anodizing specifications
Salt spray corrosion testing reports (ASTM B117 standard) available upon request
Pre-shipment inspection reports with batch-level QC data

Minimum Order Quantities: Flexible and discussed on a per-order basis depending on product configuration and customization scope
Sample Lead Time: Approximately 2–3 weeks for standard samples; custom pre-production samples confirmed upon order
Production Lead Time: Discussed and confirmed upon sample approval — timelines scaled to order volume and customization complexity
Shipping: FOB Shenzhen / EXW available; ocean freight consolidation and air freight expedited options
Payment Terms: Discussed on order confirmation; flexible terms available for established long-term partners
After-Sales Support: Manufacturer warranty against defects in materials and workmanship; spare parts (O-rings, switches, lenses, chargers) available for the product’s supported lifecycle

For OEM inquiries, cycling shop distributor partnerships, or volume pricing,

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No. 88, Tongchang Road, Longdong Dapu, Longgang Stree, Longgang District, Shenzhen City, Guangdong Province, China

Office

Sth Floor, Building No.10, Yuanyang Xintiandi Shuianhuayuan, No. 16 Shenglong Road. Shengping Community, Longcheng Street, LongganProvince, China