Water activated light...no more batteries

[hartiberlin]

P.S: What I don´t like about the Hydra Light is the color temperature of their LEDs...
These Camping Laterns always come with these very cold light bright 6500 Kelvin
Color Temperature LEDs that really hurt your eyes, cause they have very strong line spectras, not a contineous
spectrum..and that is bad for your eyes and can hurt them.....

I wish they would have choosen
the new 2700Kelvin COB filament LED modules, which are much better for your eyes...
Also these would not attract so many moths and mosquitos outdoors...

Regards, Stefan.

[markdansie]

Hi Stefan
The product one may have a warmer led, i tend to agree with you.
There is a replacement cell available sold separately with the cathode.
We are using a third party technology at the moment but are developing a low cost replacement using different manufacturing technologies.
So you can purchase the cell and anode separate to the product.
If they are used daily or continuously the cathode runs for thousands of hours. If they are not looked after properly the lifespan can be only hundreds of hours. There is some simple maintenance required. I will send you some in a couple of months.
Kind Regards
Mark

[markdansie]

Hi Stefan,
would be good if you could join our Thunder-Clap program to help spread the word.


https://www.thunderclap.it/projects/36699-saltwater-light-phone-charger?locale=en


Kind Regards
Mark

[hartiberlin]

Dear Mark.
Look into this guy´s graphite process , he has the lowest resistance in graphite plate
designs I know of....
https://www.youtube.com/watch?v=5o3eVevf9TM

It is only around 2 Ohms / cm now which will conduct the currrent  much more.
If you additionally also put a current collector stainless steel mesh metal foil behind the graphite plate
at the air side, you will even have lower inner cell and graphite plate resistance and thus much more output power...
( Then the output power will not be consumed at the ohmical resistance of the graphite plate...)

He uses H2O2 and KMNO4 to exfoliate the graphite and then bakes and burns these graphite flakes
inside the Microwave and then presses them down to graphite plates...
Thus he gets such a low resistance, which is just great...

Okay, I joined your Thunderclap promotion with my Facebook, Twitter and Tumblr Accounts...

Will be interesting to see, how your Kickstarter campaign will work out....

Regards, Stefan.
P.S: Yes, try to adapt it to the new Filament COB LED modules, that use 1800K, 2200 or 2700 Kelvin
of color temperature, they are very nice for the eyes.. also if they don´t light up so bright, but they
give out a very nice yellow warm light...

Hi Stefan
The product one may have a warmer led, i tend to agree with you.
There is a replacement cell available sold separately with the cathode.
We are using a third party technology at the moment but are developing a low cost replacement using different manufacturing technologies.
So you can purchase the cell and anode separate to the product.
If they are used daily or continuously the cathode runs for thousands of hours. If they are not looked after properly the lifespan can be only hundreds of hours. There is some simple maintenance required. I will send you some in a couple of months.
Kind Regards
Mark

[hartiberlin]

Something like these Filament LED COB Modules:
http://www.aliexpress.com/item/50-60v-37-1-6mm-1w-COB-led-light-source-for-bulb-filament/32265251230.html

But be sure to get the 2200Kelvin or 2700 Kelvin types,
so you get wonderful warm light.
You would probably need then a different DC2DC converter, as these COB Modules work with around
50 to 60 Volts, but a good JouleThief circuit would then also work quite nicely...

Hope this helps.

Regards, Stefan.