UK Acebeam H40 Headlamp, Cool White 6500K XP-L HD LED or Warm White 4000K Cri 95+LED. Great gift for Runners, Bikers and Hikers!


SKU: H40 Headlamp Categories: ,



Acebeam H40 Headlamp – 2 Versions; Cool White XPL-HD; or Warm White CRI 95+ LED

The Acebeam H40 Headlamp is a simple, compact; lightweight headlamp with tremendous power and reliability. Equipped with one CREE XP-L HD LED, this high performance headlamp provides you with a fuller; more evenly-lit view at night. It features infinite dimming outputs; ranging from 230 lumens to 15 lumens with a Li-ion battery. But, ranging from 230 lumens to 20 lumens by Ni-MH or Alkaline AA battery; plus a SOS mode for emergency situations.

Please note that the H40 Headlamp is sold without a battery; but normal AA batteries can be used. However; the maximum output can only be achieved with Acebeam’s 4500 high drain batteries or equivalent. There is an option to add one of the Acebeam batteries on the options drop-down menu when ordering.

Optional Luminus SST-20 CRI 95+ LED;

There is another optional version of the Acebeam H40 Headlamp; which is equipped with one luminus SST-20 CRI 95+ LED. This produces a warm and soft beam to resemble the nature of sunlight; thus reducing eye strain and is also ideal for photography. The headlamp’s body is constructed from aerospace grade and hard-anodised aluminium, letting it withstand drops from as high as 2 metres and also waterproof to IP68 standards. It is super lightweight; remarkably rugged; and incredibly user-friendly. The Acebeam H40 headlamp is one perfect light for any outdoor activity!

Colour Differences of thew Acebeam H40 Headlamp;

The CREE-HD XP-L HD 6500K has a colour rendering index (CRI) between 70 and 80; whilst the SST-20 CRI 95+ 4000K has a CRI of 95 or greater. This means that colours appear to be more natural under the SST LED; than under the CREE LED. While the SST LED has better colour reproduction; it is not as bright as CREE LED. People who work all day under a headlamp would benefit from the SST LED. The light of the lamp is focused into about a 70 degree arc; based on the relationship between candela and lumens.

Please note; Battery is NOT included with either model. However; an option to add a battery is available above in the ‘Options’, which proves you with the choice; with or without.

An important note to potential buyers and interested parties;

If you buy this product from China or other countries outside the UK; including sellers on Amazon and eBay residing outside the UK; you will be legally obliged to pay extra customs tax, handling charges and VAT tax charges after delivery to your door! If they don’t ask for payment at your door; the bill will arrive later through your letterbox. Don’t be fooled by lower international prices!

When you buy from Yowcha, an official Acebeam UK Stockist; EVERYTHING is included; NO extra Custom Charges; NO extra handling fees; and NO extra VAT Charges! PLUS; you’ll benefit from Yowcha Sound and Light’s excellent customer service and backup; with access to our out-of-hours telephone number!


Acebeam H40 Headlamp

Different option of H40 Headlamps;

Types of LED

H40 Size;

Headlamp size

The H40 is also waterproof;


Top Quality Components;

body and Tail Cap picture

H40 CREE 6500K Cool White Specifications;

Cree Specifications

H40 CRI 95+ Warm White;

CRI 95+ Specifications

What’s in the box;

What's in the Box


Acebeam H40 Headlamp box

Acebeam H40 Headlamp Design;

The design of the Acebeam H40 is tactically inspired. The design features each serve a function. The knurled grip on the battery cover; the cooling fins on the back of the headlamp; the grooves into which the headband fit; the easy to feel operating button are all designed for functionality!

Acebeam Warranty;

The design is also backed by a five-year warranty; which shows the confidence the manufacturer Acebeam has in its design and construction. As an added bonus; and to make warranty claims easier; the serial number is etched and painted onto the glass lens retainer. Plus; just to mention; the reflector does a great job in dispersing the light!


The headband has two adjustments; one for the circumference and one for across the top of the head. The circumference fits 26″ un-stretched; so will fit hard hats and bike helmets. And the inside of the headband is coated in two zig-zag beads of silicone; to provide exceptional traction even on slick or sweaty surfaces. The outside of the headband features 3M reflective paint to enhance the visibility of the wearer at night.

  • Option 1;

1 x CREE XP-L HD LED 6500 (batteries not included)

A) Using 1 x 14500 Li-ion (700mAh) battery;
Moonlight; 1 lumen; 29 hours; 2m; 7cd
High∞Low: 230∞15 lumens; 65 mins ∞ 10 hours; 53m ∞ 13m; 726cd ∞ 46cd
Turbo: 1050~350 lumens; 1min + 40 mins; 117m; 3454cd
SOS; ~ 12 hours

B) Using 1 x 14500 Ni-MH (2500mAh) battery;
Moonlight; 1 lumen; 50 hours; 2m; 7cd
High∞Low; 230∞15 lumens; 85 mins ∞ 20 hours; 53m ∞ 13m; 726cd ∞ 46cd
Turbo; 270 lumens; 80 mins; 60m; 885cd
SOS; ~ 18 hours

C) Using 1 x AA Alkaline battery;
Moonlight; 1 lumen; 60 hours; 2m; 7cd
High∞Low: 230∞15 lumens; 68 mins ∞ 22 hours; 53m ∞ 13m; 726cd ∞ 46cd
Turbo: 270~130 lumens; 2 mins + 70 mins; 60m; 885cd
SOS: ~, 7 hours

  • Max output up to 1050 lumens
  • 4.Max running time 60 hours
  • 5.Max beam distance 117 meters
  • 6.Peak beam intensity 3454cd
2nd Option;
  • Option 2; 

1 x SST-20 CRI 95+ LED 4000K (batteries not included)

A) Using 1 x 14500 Li-ion (700mAh) battery;
Moonlight; 1 lumen; 29 hours; 2m; 7cd
High∞Low; 150∞10 lumens; 65 mins ∞ 10 hours; 64m ∞ 18m; 1039cd ∞ 88cd
Turbo; 600~220 lumens; 1 min + 40 mins; 128m; 4104cd
SOS; ~ 12 hours

B) Using 1 x 14500 Ni-MH (2500mAh) battery;
Moonlight; 1 lumen; 50 hours; 2m; 7cd
High∞Low; 150∞10 lumens; 85 mins ∞ 20 hours; 64m ∞ 18m; 1039cd ∞ 88cd
Turbo; 180 lumens; 80 mins; 70m; 1223cd
SOS; ~ 18 hours

C) Using 1 x AA Alkaline battery;
Moonlight; 1 lumens; 60 hours; 2m; 7cd
High∞Low; 150∞10 lumens; 68 mins ∞ 22 hours; 64m ∞ 18m; 1039cd ∞ 88cd
Turbo; 180~100 lumens; 2 min + 70 mins; 70m; 1223cd
SOS; ~ 7 hours

  • Maximum output up to 600 lumens
  • The Max running time is 60 hours
  • Max beam distance; 128 meters
  • Peak beam intensity; 4104cd
  • Impact resistance; 2 meters
  • Waterproof; IP68
  • Size; 64.7×26.9×23.4mm
Other Features of the Acebeam H40 Headlamp;
  • Weight; 34g without battery.
  • Single button switch for controlling infinitely brightness
  • Constructed from aero grade Aluminium Alloy
  • Robust HAIII military grade hard-anodised


  • Conformable Elastic Headband with sweat channelling and reflective
  • Over-heat protection to avoid high-temperature of the surface
  • Toughened ultra-clear glass lens with anti-reflective coating, which achieves a 98.3% light transmittance
Any Questions about any of our Acebeam H40 Headlamp;

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