Saturday, 5 March 2016

My new torch

is a

3000Lm CREE XML T6 LED Rechargeable Flashlight Torch Light +18650 Battery+Charge(sic)

It came with 2 batteries, a charger, an AAA adapter all packed in an extremely tatty plastic "Original Camping Box".

 It may say Ultrafire but there ain't one like it at http://www.ultrafire.net/

It has two of these
 but
"
Beware of fake Ultrafire 18650 batteries
We are the manufacturer and owner of Ultrafire products ,and here declare that we had not manufactured over 3000mAh above for #18650 rechargeable battery, we do not take any responsibility in respect of any fake products.
For your safety,  please purchase Ultrafire products from our official dealers and distributors. Please support original products and welcome to email us if you have any questions about our products.
Many thanks!

The top bit slides to zoom the beam

I have no idea what the scale means but at maximum zoom, the bright bit is 400mm across @ 5m

It has five modes, Max, Mid, Min, Flash and SOS which cycle around when the button on the bottom is pressed. If it's turned off for about 10s then it resets to Max.

So, does it produce 3000 lumens?

According to the Cree datasheet for a T6 led

Minimum Luminous Flux
@ 700 mA
Calculated Minimum
Luminous Flux (lm)
Group Flux (lm) 1000 mA 1500 mA 2000 mA
T6 280 388 551 692


According to my meter

3 AAAs Li-ion
Voltage 2.35 4.02 V
Max 0.78 1.11 A
Mid 0.4 0.53 A
Min 0.22 0.26 A
Flash 0.5 0.82 A
SOS 0.83 1.09 A

Probably not

maybe they meant 300?

Still, it is very bright and a bargin at £12.89.

¿Why buy it?
For light painting with the camera after dark.
What larks eh?

Incidentally, I don't understand why the AAA battery holder Voltage measured only 2.35 when each one was 1.47
Watch this space

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