Technical Dive Lights — Primary, Backup, and Goodman Handles

In a cave or a wreck, a dive light isn't an accessory that helps you see colour — it's the tool you use to communicate, to navigate, and to signal a buddy who can't hear you. That's why technical divers run narrow beams rather than floods: a tight 8–10° spot cuts through particulate that a wide beam simply illuminates, and it produces a defined circle on a wall that can be moved deliberately as a light signal. It's also why technical configurations always include backups. A primary light failure in an overhead environment without a redundant light is a genuine emergency, which is why the standard practice is one primary and two backups.

This collection covers that full setup — narrow-beam primaries from 2,900 to 3,800 lumens, compact backups, Goodman handles that free your hands for reel and line work, and combo packs that pair a primary and backup together. At DiveCatalog.com, we carry these as an authorized dealer for every brand represented.

The Technical Dive Light Range

Primary Lights

The BigBlue TL3800P delivers 3,800 lumens through a focused 10° spot beam — four power levels plus an SOS function, powered by a 32650 lithium-ion rechargeable battery with charger included. The package ships with a reinforced Goodman-style glove and an aluminium lantern-style handle. The included USB charger supports 18650, 26650, and 32650 cells. A TL3800P Supreme extended-battery version runs three hours on high using the BATCELL18650x4-SUPREME pack.

The BigBlue TL2900P delivers 2,900 lumens in a more compact self-contained body, with a push-button switch, built-in battery indicator showing real-time charge status, and four adjustable power levels.

The Apeks Luna Primary is designed and built in Britain, with a maximum output of 2,000 lumens and up to 8 hours of runtime on a single charge. Three power settings and a digital fuel gauge give instant battery status including remaining runtime and charge percentage. USB rechargeable, with a neoprene glove handle included for hands-free use. The Luna ADV extends the range further for more demanding applications.

Backup Lights

The BigBlue AL1300NP has been a best-selling light for over five years and is a widely trusted backup for technical divers — 1,300 lumens in a narrow beam, equally useful for general purpose work and for peering into crevices. The BigBlue 450 Lumen Mini uses a narrow 8° beam with a push-button tail switch for one-handed operation, in a genuinely compact body. Also available in a focusable version.

The Apeks Luna Mini and Luna-X work as primary or backup, with selectable low, medium, and high power settings. Intelligent Thermal Management (ITM) uses patented circuitry to automatically reduce LED power if temperature exceeds optimal range, protecting output and battery capacity. The battery charges without opening the torch, reducing flood risk from a compromised seal, and a dedicated SOS strobe is built in. Ships in a reusable zippered case.

Combo Packs

The BigBlue TL3800P and AL1300NP Technical Diving Combo Pack pairs primary and backup in one purchase. Both use XML LEDs with a narrow 10° beam for penetration and precise spotting. Rechargeable Li-Ion batteries (BATCELL32650 and BATCELL18650) charge in roughly 6–7 and 3–4 hours respectively, with multiple output levels producing runtimes from about 2 hours at maximum to up to 20 hours on low. Anodized aluminium alloy housings resist corrosion and impact, and push-button controls are designed for gloved operation. Tested to 328 ft (100 m), including spare O-rings, removable yellow and red filters, lanyards, chargers, and a one-year limited warranty.

Goodman Handles and Mounts

A Goodman handle straps the light to the back of your hand, leaving fingers free to run a reel, hold a line, or manage valves — the reason it's standard in technical diving rather than a pistol grip. The BigBlue Goodman Handle has a 4.5″ horizontal interior measurement, and an Easy Release version adds an integrated quick-release system fitting any light with a two-prong mounting square (AL1800 and up). The BigBlue Neoprene Goodman Glove Mini suits smaller lights in the range.

The Apeks Torch Handle Goodman Kit offers multiple mounting points and an adjustable handle height to accommodate thick gloves, and can carry an action camera plus two video lights for a stable filming platform.

Key Technical Light Features

• Narrow beam angle: An 8–10° spot penetrates particulate rather than illuminating it, and produces a defined circle for light signalling. Wide flood beams backscatter badly in silt and are difficult to signal with.
• Goodman handle mounting: Frees the hand entirely for reel work, line handling, and valve drills while keeping the beam aimed where you're looking.
• Burn time at maximum output: The number that matters for dive planning. A light rated for 20 hours on low may only run 2 hours on high — plan against the setting you'll actually use.
• Battery indicator or fuel gauge: Removes guesswork before a dive. Digital gauges showing remaining runtime and charge percentage are considerably more useful than a simple low-battery LED.
• Intelligent Thermal Management: Automatically throttles LED power if temperature exceeds optimal range — protecting the emitter and preserving battery capacity, particularly when a light is run out of water.
• Sealed charging: Charging without opening the torch body means the main O-ring seal is never disturbed between dives, reducing flood risk.
• Gloved-use controls: Push-button switches sized and weighted to operate through thick neoprene or drygloves.
• Depth rating: Verify against your planned depths — 100 m (328 ft) covers most technical diving but not all.

Building a Technical Light Setup

Standard technical practice is one primary and two backups. The primary does the work of the dive; each backup must independently be capable of getting you out of the overhead environment. Backups are typically stowed clipped to the harness where they can be deployed one-handed without unclipping anything else.

Match the primary's burn time on high to your planned runtime with a genuine margin, not a marginal one — and remember that battery performance drops in cold water. If you're running a camera as well, a Goodman handle with accessory mounting points lets one hand carry both light and camera rig.

Choosing Your Technical Light

Maintenance & Care

• Rinse in fresh water after every saltwater dive, working the switch under water to flush salt from the mechanism.
• Inspect and lightly lubricate O-rings regularly; carry the spares supplied with combo packs.
• Never run a light at full output in air for extended periods — without water cooling the emitter overheats, which is exactly what thermal management circuitry exists to mitigate.
• Store lithium-ion batteries partially charged rather than full or empty, and remove them for long-term storage.
• Test every light, including both backups, before each dive rather than assuming a charge held.
• Check that charging contacts are dry and clean before charging, and follow the manufacturer's charge times.

Why Buy Technical Dive Lights from DiveCatalog.com?

• Authorized dealer for BigBlue and Apeks — genuine products, full manufacturer warranty
• Primary, backup, and handle options — everything needed to build a complete redundant light setup
• Expert advice — our team can help you match burn time and output to your dive plans
• Fast shipping — in-stock items ship within one business day
• Rewards program — earn points on every purchase

Frequently Asked Questions

Why do technical divers use narrow beams instead of floods?

Two reasons. A narrow 8–10° beam penetrates suspended particulate rather than lighting it up, so you see through silt instead of into it. And a tight beam produces a defined circle on a wall or the bottom that can be moved deliberately as a signal — light signalling is the primary communication method in an overhead environment where hand signals may not be visible.

How many lights should I carry?

Standard technical practice is three: one primary and two backups. Each backup must independently be capable of getting you out of the overhead environment, because a light failure in a cave or wreck without redundancy is a serious emergency rather than an inconvenience.

What is a Goodman handle and why not just hold the light?

A Goodman handle straps the light to the back of your hand, so your fingers remain completely free to run a reel, handle a line, operate valves, or manage a camera — while the beam still points where your hand points. Holding a light occupies a hand you need for other tasks, which is why Goodman mounting is standard in technical diving rather than optional.

How do I plan around burn time?

Plan against the output setting you'll actually dive, not the best-case number. A light rated up to 20 hours on low may run only about 2 hours at maximum output. Add margin for cold water, which reduces battery performance, and for the possibility of an extended exit.

What is Intelligent Thermal Management?

Patented circuitry in the Apeks Luna range that automatically reduces power to the LEDs if they exceed optimal operating temperature. It protects the emitter and maximises both output consistency and battery capacity — particularly relevant when a light is switched on out of water, where there's no cooling.

Can I use these lights for video and photography?

Narrow-beam technical lights are built for penetration and signalling, not the even, wide coverage video work needs. The Apeks Goodman Kit can mount an action camera alongside two dedicated video lights, which is the better approach — use the technical light for the dive and purpose-built video lights for filming. Removable yellow and red filters supplied with the BigBlue combo pack do allow some colour correction.

Browse the full technical dive light collection above and reach out if you'd like help building a complete primary and backup setup for your diving.