Anybody making 30 to 60 thousand lumen dive lights? Besides Big Blue??

[Angelo Farina]

I just checked the specs for the Bigblue CB60000P.
It employs two battery packs mod. Batcell60000.
Each of them is equipped with 8 cells, mod. Samsung INR21700 or equivalent.
These cells are rated at 4.75 Ah at 3.6V.
Hence the total amount of energy stored is:
4.75x3.6x16=273.6 Wh.
It is a lot...
However the lamp is rated to last 1.5h at max power. Hence the available electrical power available for feeding the array of COB LED chips is: 273.6/1.5=182W.
Even assuming high efficiency chips, there is no way this lamp can produce more than 20000 lumen. Instead it is rated, very optimistically, at 60000 lumens.
Energy does not lie...

 

[ahereng]

It's not on their website, but I know they make a 360w light which is basically three of these in one body: LED Trojan FATMAN 40/120W Video
You have to contact them to get some info.

 

[tbone1004]

@calabash digger big blue does not make lights that can output 30k or 60k lumens. They may claim they do, however it is not possible with the batteries they are using. @Angelo Farina posted some information. Every light that BB makes should have their lumen rating cut in half at best for their actual outputs.
For blackwater diving, the total lumen output isn't going to allow you to see any better, particulate is particulate...

 

[Calabash Digger]

Yeah so that’s less than 10,000lumens total and even fewer a few minutes after they’ve been turned on. I’m not sure how the Keldan actually tests but at least their math in wH makes slightly more sense. Light and Motion is pretty accurate but at loss of burn time.

So basically Big Blue is ripping me off?? I have two 10,000 lumen lights tethered together...so it should be 20,000 and your saying it is not even close to that...

 

[Calabash Digger]

I have tried a 4800 lumen 10 degree beam from big blue but according to yhall it really was more like 2400.... it was not enough...

 

[Calabash Digger]

That just me off....that they are lying that much about their lumen output..

 

[grantctobin]

That just me off....that they are lying that much about their lumen output..

Yeah wait until you hear how much of that “10,000” lumen is actually being output after they’ve been on for an hour.

I still think in your use case a Halcyon Focus or Flare or a 21W,35W HID would be more useful in that particulate.

 

[Calabash Digger]

I know they get weaker at the end of my dive...my friends are all using the old halogen lights and I have been the test monkey on the LED lights....I wish I could find a company to test lights for here in this dark water without having to spend thousands of dollars to figure all this crap out..

 

[ofg-1]

Get in touch with Bobby at UW Light Dudes.

https://uwlightdude.com/

They are in Charleston and he may have something he would let you try, or at least some ideas.

 

[OTF]

Whats the purpose for such a powerful lighting rig? At that level you're going to need something set up for the specific job.

Maybe you're planning some special task like illuminating a whole cave or shooting high-speed video, but for most general purposes more light doesn't necessarily equal more better after a few thousand lumens.

And yeah, BigBlue is a Chinese company (with slicker than usual branding) that misrepresents specs to sell more lights to novices. Their product is "OK" but not great. Very different from high end light builders like Under Water Light Dude or Light Monkey.