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The 3000-lumen Ammonite LED SPELEO MKII light kit is a top-of-the-line umbilical diving light that's powerful and versatile and also part of the Ammonite modular system. It has been designed specifically for cave divers but is a great choice for any dive. A gentle corona complements its focused beam and provides excellent communication properties, giving divers heightened awareness of their surroundings.
Battery Size
Dispatched in 1 to 2 days
Ammonite Speleo MK II Light Kit
The 3000-lumen Ammonite Speleo MK II Light Kit has been designed specifically for cave divers but is an ideal light for a wide range of diving.
Its focused 6-degree beam, complemented by a subtle corona, provides outstanding communication properties, enhancing divers' awareness of their surroundings. Furthermore, its maximum output of 3000 lumens is more than adequate for any diving conditions.
Whether exploring a sunken wreck or navigating a cave system, the LED Speleo Mark II is the ideal light, offering reliable and efficient performance every time.
You can also purchase the Ammonite LED Speleo MKII Light Head if you already have an Ammonite Battery.
SPELEO MK2 Key Features:
- Power: 32W
- Beam Angle: 6º
- Max Brightness: 3000-Lumen
- Light Intensity: 20% / 40% / 100%
- Max Depth: 200m
- Warranty: 3 Years

Ammonite Speleo Mark II Light Head burn times
Ammonite System Speleo MK2 LED light head burn times vary depending on the battery you will be using and the power setting. Factors such as battery health (charge, discharge cycles and age) and ambient temperature will also affect burn times. The chart below is based on using the 9, 10, 14 and 24 Ah batteries.
Speleo MK2 has 3 light modes
LED Speleo MKII provides up to 3000 lumens of light. It has an easy-to-operate switch knob that allows for better optimisation of the light amount. It features three operating modes that cater to a diverse range of needs.
In BACK-UP mode, you'll get approximately 20% of the maximum light output, while OPERATIONAL mode offers approximately 40%. And for maximum brightness, BOOST mode is the way to go.
But it's not just about brightness – adjusting the light output also helps to minimise backscatter in murky water conditions. And by changing the settings, you can also adjust the operating time of the light.
In OPERATIONAL mode, you can expect up to 10 hours of burn time, while in BACK-UP mode, it can last for over 25 hours when paired with the smallest Ammonite System battery, Accu Type 9.
BOOST mode offers maximum power when you need it the most, providing you with the brightest illumination possible.
So whether you're exploring a deep wreck or navigating a dark cave, the Ammonite Speleo Mark II Light Head has you covered. Its durable construction, versatile light modes, and long burn time make it the ultimate diving light for any adventure.
Take Me Home mode
The inner microchip system signals a low battery level with a strobe flash. When the battery is drained, the device automatically switches to “Take me home” mode (light output at 20% intensity).
"Take me home" is a backup mode that Ammonite umbilical lights switch to when the battery is drained. Depending on the light and the battery, the light will continue operating for at least one hour or more. However, it will only work in "take me home" mode until the battery is recharged.
Compact design
The LED Speleo MKII’s compact and lightweight design makes it incredibly easy and convenient to operate, allowing divers to focus on their exploration without being encumbered by heavy or cumbersome light heads.
It is only 116mm long and 53mm in diameter and weighs only 262g (100g in water).
LED Speleo MKII is also an ideal choice with Ammonite System Goodman handles, allowing for greater manoeuvrability and comfort during extended dives.
Ammonite batteries
Ammonite Accu batteries are encased in a robust, hard-anodised canister. A lithium-ion (Li-Ion) battery pack is completely free of the so-called lazy battery effect and protected against overvoltage.
In the standard version, the batteries are fitted with a webbing fixed loop fastening to the hip belt. The batteries can also be equipped with alternative fastening systems, a Sidemount Battery Holder, or an Accu Clic Mount.
International regulation governs the transport of lithium batteries, which can differ depending on whether they are transported by air, sea, or road.
All Ammonite lithium-ion (Li-Ion) batteries comply with UN Transportation Testing (UN/DOT 38.3) for Lithium Cells and Batteries and ensure the safety of your lithium batteries during shipping.
Ammonite System is Modular
Due to the modular design concept, you can configure your umbilical light set according to your needs.
All Ammonite umbilical lights, cables, standard batteries, and heating batteries have the same chinch-type connector. Thus, there are no obstacles when one of the parts wears out, or you want to upgrade it.
Modularity also affects convenience and safety. For example, you can exchange the broken cable for a new one at the diving spot without sending it to the service centre.
SPELEO MK II SPECIFICATIONS:
Light Output: Up to 3000 lumen
Light Distribution: 6º
Type of Optics: 1x Reflector
Total Power: 32W
Light Source: 1 × LUMINS SST70
Colour Temperature: Cool White
Halo: Mild halo effect
Material: Hard annodised aluminium / Delrin
Switch Type: Magnetic switch, 3 level intensity, discharge warning, take me home mode
Max. Length: 116mm
Max. Diameter: 53mm
Front Glass: 6mm tempered glass
Surface Weight: 262g
In-water Weight: 100g
Max. Operating Depth: 200m
ACCU 9Ah SPECIFICATIONS:
Capacity nominal: 9Ah
Charge/discharge cycles: 500-700
Charger input voltage: 100-240 V
Charging time: ~4 h
Over pressure valve: Yes
Rechargeable battery: Li-Ion
Total energy: 96 Wh
Voltage: 10,95 V
Material: Delrin® / Aluminium Alloy – Hard Anodised
Max. length: 246mm
Max. diameter: 46mm
Weight: 705g
Weight in water: 450g
Max. operation depth: 200m
ACCU 14Ah SPECIFICATIONS:
Battery Type: Li-Ion
Voltage: 10.95V
Capacity Nominal: 14 ah
Capacity Rated: 13.4 Ah
Charge/Discharge Cycles: 500-700
Charger Input Voltage: 100-240 V
Charging Time: ~4.5 h
Material: Delrin/Aluminium Alloy - Anodised
Max Diameter: 66 mm
Max Length: 200 mm
Max Operating Depth: 150 m
Over Pressure Valve: Yes
Surface Weight: 1100 g
In-Water Weight: 750 g
Safe for Air Transport (UN/DOT 38.3): Yes
ACCU 24Ah SPECIFICATIONS:
Battery Type: Li-Ion
Voltage: 10.95V
Capacity Nominal: 24 ah
Capacity Rated: 22.4 Ah
Charge/Discharge Cycles: 500-700
Charger Input Voltage: 100-240 V
Charging Time: ~8 h
Material: Delrin/Aluminium Alloy - Anodised
Max Diameter: 66 mm
Max Length: 258 mm
Max Operating Depth: 100 m
Over Pressure Valve: Yes
Surface Weight: 1400 g
In-Water Weight: 600 g
Safe for Air Transport (UN/DOT 38.3): Yes
SHIPPING:
We aim to dispatch all in-stock items within 2 working days but will inform you of approximate delivery times should any item on your order be out of stock or on supplier backorder due to current manufacturing or transport delays caused by global shortages and/or impeded production.
Please refer to our Shipping Policy and Returns & Refunds Policy for detailed information on delivery terms and returns.
Our current shipping rates are as follows:
• UK mainland orders £45 and over: FREE
• UK mainland orders under £45: £4.90 Fixed Rate
• Scottish Higland and Islands & Isle of Man: £9.90 Fixed Rate
• Channel Islands & Northern Ireland: £14.90 Fixed Rate
• European Union: £13.90 + 5% of order value (maximum £30)
• Rest of the World: £19.50 + 8% of order value (maximum £55)
• BFPO Post Codes: £20
INTERNATIONAL EXCEPTIONS:
For international orders containing weights, cylinders (excluding suit inflation bottles) and Suex scooters please contact us in advance before placing your order.
These products are not included in our global max-capped shipping rates and are only shipped outside of UK mainland after freight cost is calculated based on total weight, dimensions of parcel, location of delivery and the courier service used. We will let you know what this cost will be before processing any order.
All cylinders we ship within and outside of UK mainland are filled and tested on site before being emptied for dispatch. Cylinders shipped outside of the UK will be empty and will also have their valves removed, requiring reassembly after you receive delivery. Twinset manifolds and bands will also be removed and dispatched together with the cylinders for safe global shipping.
RETURNS & REFUNDS
We offer a 30 day return for any product sold under our Returns & Refunds Policy Please contact us before any return with your order number and date details. Receive our Returns Authorisation Form and instructions and enclose them with your return to expedite a refund. Detailed information is available in our Returns & Refunds Policy.
Email us at sales@dirdirect.com or call us on +44(0)1305 824 555
Note that all returned items are shipped at the customer's own risk and remain the customer's property until received by Underwater Explorers, so please ensure they are packaged well and use reliable postal services with tracking facilities. The goods will be inspected on arrival.
Return postages are at your own cost and our outbound shipping costs (if items are sold with integrated basic shipping charges i.e. Free shipping for orders £45 and above) the UK shipping rate may be deducted from any UK mainland refund unless linked to a fault/defect claim.
Please contact us with your order number and name before sending any returns to:
Underwater Explorers – Returns
Unit 1, Maritime Business Centre
Mereside, Portland
Dorset, DT5 1FD
United Kingdom
Please refer to our Shipping Policy and Returns & Refunds Policy for detailed information.