barbolight zoom divelights already released??

[nitrogenaddict]

I have been searching for a new led-divelight and found the barbolight U04. After reading a bounch of threads here at CPF I decided to wait for the U04 zoom and maybe a nice deal, which I must have missed?

I found a dealer who claims to sell the barbolight zoom lights:
http://www.lightman.no/?page=module...c&referrer=kelkooBarbolight&referer=kelkoo_no

Has anyone tried this light under water?

 

[gav6280]

Why not ask the main man yourself, he is a regular here on CPF, and always is very helpfull.

 

[gcbryan]

Why not ask the main man yourself, he is a regular here on CPF, and always is very helpfull.

Ask him what...has he ever tried this light out underwater?

 

[gav6280]

Ask him what...has he ever tried this light out underwater?

Ask Janos if he is making them yet.

 

[whitenoise]

From Google Translation:

Very komakt dive lamp with adjustable focus and output! 220 lumen, 200 meter

Extremely compact and versatile dive light, can act both as a backup and the main torch. Adjustable focus and output, output can be adjusted in 3 stages, 100%, 50% or strobemodus. Focus is adjusted easily between the wide angle or spot, and gives the torch several applications, both in general as a dive light and as a supplement to such video. The lamp is in general not strong NOK as the main lantern attached to the video filming.

1 x LED Cree XRE + Ergo-Visión aluminum reflector> 220 lumens
Powered by 2 x CR123 or 1 x 18650 Li-Ion 3.7V battery
Waterproof to 200m IP68M (-200m. 20 Atm.) / IK10. Mil. Mil. Std. Std. 810-F 810-F
Burn time; (100% / 50% / STROBE): 140min/300min/1200min.
Length: 112/131mm
Weight: 116 grams

Doesn't look like they are available though, as it just says "Delivery: Contact Us". The price is listed as US$2198 !

 

[nitrogenaddict]

Cant see my reply so I am trying again, sorry if there will be a double post.

Not to worry the price is in norwefian crowns , so 386 USD is closer to the truth.

I have been away on a divetrip and therefore unable to contact the dealer. You are right thogh, the older u15 is in stock and the u15 zoom is possible to order but it says to contact them for the deliverytime. strange that they have a set price then....

Another interesting thing from that dealer the older u15 is about 17 USD cheaper than the new u15 zoom....

 

[Packhorse]

Interesting burn time vs output.
I bet it does not really put out 220 lumen for 140minutes.

 

[gcbryan]

Interesting burn time vs output.
I bet it does not really put out 220 lumen for 140minutes.

Why wouldn't it? Just trying to make sure I understand the math involved correctly.

3.7V * .700mA = 2.59W

For the 18650 battery: 3.7 * 2200mA = 8.14 Wh

8.14/2.59 = 3.14 hours?

Is this not the way you figure these things?

 

[Packhorse]

On paper yes. In reality its a different story.
The light can run on 2 CR123's so it must have a driver capable of dropping down the voltage.
Also the Vf of XR-E's tend to be about 3.7v. when the (single) battery voltage drops below that it will drop out of regulation. In fact it may need a few 10ths of volts about the Vf of the LED to stay in regulation. So it will drop out of regulation earlier.

But perhaps it uses a boost buck driver so it can handle higher and lower Vin than Vf. But then these would be very inefficient.
Then there is the inefficiency of the battery being run down over a relatively short period.

Anyway in my experience running XR-E's off a single Li Ion with drivers, AMC's ( arguably the most efficient way), resistors and direct drive, I have not seen full output for 2 + hours.

 

[gcbryan]

On paper yes. In reality its a different story.
The light can run on 2 CR123's so it must have a driver capable of dropping down the voltage.
Also the Vf of XR-E's tend to be about 3.7v. when the (single) battery voltage drops below that it will drop out of regulation. In fact it may need a few 10ths of volts about the Vf of the LED to stay in regulation. So it will drop out of regulation earlier.

But perhaps it uses a boost buck driver so it can handle higher and lower Vin than Vf. But then these would be very inefficient.
Then there is the inefficiency of the battery being run down over a relatively short period.

Anyway in my experience running XR-E's off a single Li Ion with drivers, AMC's ( arguably the most efficient way), resistors and direct drive, I have not seen full output for 2 + hours.

Thanks for the explanation. So it can run that long but it won't be at full power or it will be at full power but due to inefficiencies it won't be for 2 + hours.

Makes sense. It's so much easier on paper.

 

[whitenoise]

It all hurts my head

Thanks for the clarification there nitrogenaddict, I did see it said US, so thought that meant US dollars even if the price made no sense!

I'm now just waiting to see Michaels (mb-sub) new light which he says more information will be available in the next few weeks. Apparently its an adjustable focus LED head with 1300 lumens. Might be another contender, especially when coupled with a Photon body.

 

[nitrogenaddict]

I finally heard back from the dealer and the zoom barbolights will not be available untill Jan 2010. He had been in direct contact with Barbolight so I guess I just have to wait a bit longer for my first serious underwater led light.

In the mean time I have had a small flooding (number 4 so far) of my homemade 16.8V osram 50W IRC divetorch. What is the point of having a monster divetorch if it is not waterproof?