Do you have a link for a recommendation on a 3rd cell for this light?

Yes we do. But don't think we can post the url here as it is outside of Amazon. But, please allow us to offer some guidance. There are TWO OPTIONS to extend working time on a single charge of the cells. 1) Add third cell using the supplied extension barrel, or 2) Use higher capacity (mAh) 18650 cells, for example 3200mAH cells will give you around 5-6+ hours of working time. HOWEVER, you will see examples which say 9000mAh. The highest known capacities at the time of this writing is near 3400mAh. Anything beyond that should be examined closely as these are often inflated figures. It is better (although not mandatory) to go for good manufacturers such as Panasonic, LG, Sony, Samsung, and the like. Also, a very quick check on any examples you have is to weigh them. If any one cell is below 40 grams in weight then this indicates poor internal cell chemistry. Hope this helps. [uvBeast]

What’s the difference between this leds uv and nitchi uv (both 365 nm)?

Maybe they are from Nichia. Not many manufacturers of 365 LEDs. Makes no difference though. It's real.

Can you check oil leaks in automotive? Engine, transmission fluids etc?

Indeed. Although UV reactive dye will need to be used.

Can I purchase a clear lens separately if I don’t want to run in 365nm?

Hi Nicholas. Thanks for your question. You will always be emitting 365 nanometer wavelength UV even if you fit a clear lens. That's because the LEDs on the V3 365nm emit at 365nm wavelength. If you need a different wavelength then you'll need different LEDs. The only other wavelength LEDs available are at the 385nm and upwards end. Visible light is at around 395nm+. (LEDs also come in the 270nm range btw which is the dangerous UV). Please note that what you can use a 385nm+ UV flashlight for, a 365nm flashlight will also do in the majority of use cases. Hope that helps. [uvBeast]

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uvBeast V3 365nm Black Light UV Flashlight – High Definition Ultraviolet - HIgh Power and Long Range Professional Grade Beam Best for Professional/Commercial Use – USA Stock

Product ID: 260574797

Details

Colour
Metallic Black
Light source type
LED
Material
Aluminum
Power source
Battery
Special features
Portable

⚡Lithium-Ion rechargeable battery, 4h runtime

📏60+ feet long-range UV beam

🔦Triple 365nm UV LEDs for max intensity

R3177

Duties & taxes included

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Description

🔥 Light Up Your World with the UV Flamethrower!

RECHARGEABLE READY - Powered by premium 18650 lithium-ion cells with included charger, ensuring up to 4 hours of uninterrupted, high-intensity use.
TRIPLE LED BRILLIANCE - Three high-output LEDs combine for a total radiant intensity of 5400 uW/cm², setting a new standard in UV flashlight performance.
UNMATCHED UV PURITY POWER - Filtered 365nm wavelength delivers professional-grade UV intensity unmatched by 395nm or unfiltered alternatives.
ENGINEERED FOR PROFESSIONALS - Crafted from aerospace-grade anodized aluminum with full supply chain control, guaranteeing durability and authentic quality.
EXTENDED REACH FOR PRECISION - Illuminate targets over 60 feet away with a focused, high-flux density beam designed for commercial and industrial accuracy.

The uvBeast V3 365nm Black Light UV Flashlight is a professional-grade, filtered ultraviolet device featuring triple high-intensity 365nm LEDs that emit a powerful beam reaching over 60 feet. Powered by rechargeable lithium-ion batteries, it offers up to 4 hours of runtime in a rugged aerospace-grade aluminum body. Designed for commercial and industrial applications, it delivers superior UV purity and intensity unmatched by typical 395nm or unfiltered UV flashlights.

Specifications

ASIN	B01CV1XW5K
Additional Features	Portable
Amperage	1000 Milliamps
Batteries are Included	Yes
Battery Description	Lithium-Ion
Battery Life	4 Hours
Battery Type	Lithium Ion
Best Sellers Rank	#18,307 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #236 in Handheld Flashlights
Brand Name	uvBeast
Color	Metallic Black
Colour	Metallic Black
Customer Reviews	4.7 out of 5 stars 3,035 Reviews
Finish Types	Black Anodized Aerospace-grade Aluminium
Included Components	UV Flashlight Kit, USB Charging Cable, Power Adapter
Item Dimensions D x W x H	22D x 5.5W x 2.3H centimeters
Item Weight	377 Grams
Light Output Maximum	900 Lumens
Light Path Distance	60 Feet
Light Source Special Features	Filtered 365nm UV, High Intensity, Long Range, High Flux Density
Light Source Type	TRIPLE 365nm LED
Light Source Wattage	9 Watts
Light source type	TRIPLE 365nm LED
Manufacturer	uvBeast
Manufacturer Part Number	UVB-01
Manufacturer Warranty Description	1 year manufacturer.
Material	Aluminum
Material Type	Aluminum
Model Number	UVB-V3-365
Mounting Type	Handheld
Number of Batteries	3 AA batteries required. (included)
Number of Light Sources	3
Power Source	Batteries Included
Power source	Batteries Included
Recommended Uses For Product	Professional and commercial use
Runtime	1 hour and 10 minutes
Shape	Rectangular
Special features	Portable
Style Name	Tactical
UPC	784672200646
Unit Count	1.0 Count
Voltage	3.7 Volts
Warranty Type	Manufacturer
Water Resistance Level	Not Water Resistant
Wattage	9 watts
White Brightness	140 Lumens
White brightness	140 Lumens

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