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

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: 182286224

Details

Color
Metallic Black
Light Source Type
LED
Material
Aluminum
Power Source
Battery
Special Feature
Portable

📏60+ feet long-range beam

🔋Dual 18650 rechargeable batteries included

🔦Triple 365nm LEDs for max UV intensity

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Rp3396333

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Sold byAmazon IndonesiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔦 Own the Night with the Ultimate 365nm UV Beast!

COMPLETE RECHARGEABLE KIT - Includes two 18650 Li-ion batteries, extension barrel for a third, and USB charger—stay powered all day.
TRIPLE HIGH INTENSITY LE DS - Three powerful LEDs deliver a combined 5400 uW/cm² UV intensity, setting a new industry standard.
PURE 365 NM FILTERED UV POWER - Experience professional-grade UV with high flux density for unmatched precision and clarity.
DURABLE AEROSPACE GRADE ALUMINUM - Sleek, black anodized body built to withstand rigorous professional use while maintaining lightweight portability.
UNRIVALED LONG RANGE ILLUMINATION - Illuminate targets over 60 feet away—perfect for commercial, forensic, and mineralogical pros.

The uvBeast V3 365nm Black Light UV Flashlight is a professional-grade, filtered ultraviolet device featuring triple high-intensity LEDs emitting pure 365nm UV light. Designed for superior long-range performance, it projects a powerful beam over 60 feet, ideal for commercial, forensic, and mineral inspection applications. Crafted from aerospace-grade aluminum, it includes rechargeable dual 18650 batteries with an optional third cell extension and a USB charging system, delivering unmatched durability, intensity, and convenience for demanding users.

Specifications

ASIN	B01CV1XW5K
Additional Features	Portable
Batteries are Included	Yes
Battery Description	Lithium-Ion
Battery Life	4 Hours
Battery Type	Lithium Ion
Best Sellers Rank	#5,271 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #81 in Handheld Flashlights
Brand Name	uvBeast
Color	Metallic Black
Customer Reviews	4.7 out of 5 stars 3,181 Reviews
Finish Types	Black Anodized Aerospace-grade Aluminium
Included Components	Extension barrel for optional third cell, Two-bay USB charger with mains adapter, UV Filter, x2 18650 Li-ion Recharageable Cells Included Components Extension barrel for optional third cell, Two-bay USB charger with mains adapter, UV Filter, x2 18650 Li-ion Recharageable Cells See more
Item Dimensions D x W x H	8.66"D x 2.17"W x 0.91"H
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	LED
Light Source Wattage	9 Watts
Manufacturer	uvBeast
Manufacturer Part Number	UVB-01
Manufacturer Warranty Description	1 year manufacturer.
Material	Aluminum
Material Type	Aluminum
Model Number	UVB-V3-365
Number of Batteries	3 AA batteries required. (included)
Number of Light Sources	3
Power Source	Battery Powered
Recommended Uses For Product	Professional and commercial use
Shape	Cylindrical
Special Feature	Portable
Style Name	variant
UPC	784672200646
Unit Count	1.0 Count
Voltage	3.7 Volts
Warranty Type	Manufacturer
Water Resistance Level	Not Water Resistant
Wattage	9 watts

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