Description

Serious light in a compact package

When visibility matters, the BigBlue AL1800NP-II 1800-Lumen Tech Light delivers a powerful, concentrated beam in a compact handheld design.

Designed for recreational and technical diving, the AL1800NP-II produces up to 1800 lumens through a focused 10° beam that cuts through darkness and helps minimize backscatter in low-visibility conditions.

Whether you’re exploring a wreck, checking a dark overhead, signaling a buddy, or heading out for a night dive, this rechargeable dive light combines strong output, simple controls, and rugged construction in an easy-to-carry package.

Powerful 1800-lumen output

The AL1800NP-II offers four selectable brightness levels:

• 180 lumens
• 450 lumens
• 900 lumens
• 1800 lumens

This lets you tailor the light output to the dive rather than running at full power all the time.

Use maximum output when you need to illuminate a larger area or penetrate darkness, then reduce brightness when conserving battery life or working at close range.

Focused 10° narrow beam

A narrow beam is especially useful for technical diving, wreck exploration, low-visibility environments, and underwater communication.

The AL1800NP-II’s 10° spot beam concentrates its output instead of spreading light across a wide area.

That focused design helps the beam punch through dark water while also making the light useful for signaling a dive buddy.

Four power levels plus SOS mode

A push-button control provides access to the four brightness settings as well as an SOS signaling mode.

The straightforward control system makes it easy to adjust output underwater without complicated menus or multiple switches.

Rechargeable lithium-ion power

The AL1800NP-II uses BigBlue’s rechargeable 26650 lithium-ion battery, eliminating the need to constantly replace disposable batteries.

BigBlue’s current U.S. specifications list approximately:

• 2 hours at 1800 lumens
• 4 hours at 900 lumens
• 8 hours at 450 lumens
• 20 hours at 180 lumens

That range gives divers flexibility to trade maximum output for extended runtime when needed.

Color-coded battery-level indicator

The push-button switch includes a battery-level indicator so you can keep track of remaining power.

The indicator changes color as battery capacity decreases, giving you useful information before and during the dive rather than leaving you guessing about battery status.

Durable anodized aluminum construction

The light body is manufactured from anodized aluminum alloy designed to withstand demanding aquatic environments.

This rugged construction provides a solid balance of durability, corrosion resistance, and manageable weight.

Built for serious diving

BigBlue rates the current U.S. version of the AL1800NP-II to a tested maximum depth of 100 meters / 330 feet.

That makes it suitable for everything from recreational night diving to many technical and advanced wreck-diving applications.

Compact and travel-friendly

Despite its strong output, the AL1800NP-II remains compact enough to carry easily in a BC pocket, clip to a harness, or pack as part of a travel dive kit.

Its cylindrical body measures approximately 35.5mm in diameter and 139.8mm long.

For technical divers, its compact size also makes it practical as either a primary handheld light for certain dives or a powerful backup light depending on the diver’s configuration and requirements.

Everything you need to get started

BigBlue supplies the AL1800NP-II with the essential accessories needed for charging, storage, and routine maintenance.

The current U.S. package includes:

• AL1800NP-II dive light
• Rechargeable battery
• USB charger
• Wrist lanyard
• Two spare O-rings
• Silicone lubricant
• Roll-top dry bag
• Owner’s manual
• Manufacturer’s one-year warranty

Charge it, gear up, and take it diving.

Key Features

• Maximum output of 1800 lumens
• Focused 10° narrow beam
• Four selectable brightness levels
• 180 / 450 / 900 / 1800 lumen settings
• SOS signaling mode
• Push-button operation
• Integrated color-coded battery indicator
• Rechargeable 26650 lithium-ion battery
• Up to approximately 20 hours of runtime on lowest setting
• 6500K cool-white color temperature
• Rugged anodized aluminum alloy housing
• Tested to 100 meters / 330 feet
• Compact handheld design
• Rechargeable USB charging system
• Wrist lanyard included
• Spare O-rings and silicone lubricant included
• Dry bag included
• One-year manufacturer’s warranty

4. Technical Specifications