https://www.digitaltrends.com/outdoors/hydralight/

Does anyone know about this yet?

kv

 

 

I figured, but couldn't find the info on the net while working.

Thanks for the info.

kv

 

And here i was looking for a water wheel! Silly me!

 

It's a con trick to sell a product to idiots that don't understand science ...

Ridiculously bulky and heavy ... pitifully under-powered.... over priced ....

The second video exposes it as a waste of space.

 

And here i was looking for a water wheel! Silly me!

I thought the same.

Theoretically it is possible to make a water only powered device, but it will be very inefficient.

The person who made a car work with water, dissapeared 20 years ago, ever since, such things are unherd of.

 

Molten sodium batteries would be "good" if you want to be sure your flashlight will power up, albeit not for very long, after sitting on the shelf for a few decades.

I can't even find a decent photo of one on the web! The ones I've seen (at a military power sources conference; they are used for powering guided missiles) looked rather like large metal can capacitors with hermetically sealed terminals.

There are entirely legitimate water activated batteries. The flashlight performance may have been due to poor match between the characteristics of the cell and the LED. In all his obnoxious yapping, the guy who did the review had about 10 seconds of actual semi-useful info, but of course nothing that really explained anything.

 

Molten sodium batteries would be "good" if you want to be sure your flashlight will power up, albeit not for very long, after sitting on the shelf for a few decades.

I can't even find a decent photo of one on the web! The ones I've seen (at a military power sources conference; they are used for powering guided missiles) looked rather like large metal can capacitors with hermetically sealed terminals.

There are entirely legitimate water activated batteries. The flashlight performance may have been due to poor match between the characteristics of the cell and the LED. In all his obnoxious yapping, the guy who did the review had about 10 seconds of actual semi-useful info, but of course nothing that really explained anything.

Normally you are right, that there are a lot of stupid people everywhere, like all sayers(those who say).

How about giving more info on the military tech, I would like to know if this is really possible.

 

I can sell you a wind powered flashlight. Very clean , very cheap!

 

I remember first hearing about these, "as seen on TV", e.g., https://www.amazon.com/Hydralight-F...076JJSJ97/ref=cm_cr_arp_d_product_top?ie=UTF8

One of the one star reviews cracked me up...My 12 yr old dog is brighter than this "flashlight"
Replacement metal is available, but somewhat expensive https://www.amazon.com/Hydra-Light-..._rd_t=40701&psc=1&refRID=D7FS9V5J68B1DMJMXBQJ

The Red Cross also sells a flashlight like this, but much cheaper https://www.amazon.com/American-Bla...=American+Red+Cross+Blackout+Buddy+H2O,&psc=1. They use an "environmentally friendly" tagline, but I don't see any replacement magnesium suggesting it is a disposable (maybe I am wrong). It is much cheaper though.

I'm saving my $$ for some X-Ray glasses.

 

There's nothing new about water powered lamps.
https://en.wikipedia.org/wiki/Carbide_lamp#Mechanism

 

The Red Cross also sells a flashlight like this

Going by the reviews Hydralight definitely sounds a no. Too many negatives and I think even if you ignore rest of it, I would still sick with the most basic parameter, the light. I don't find it too effective honestly.

Maybe if we could find some stats comparing these two.