http://dx.com/p/environmental-friendly-1-5v-60ma-water-aa-batteries-set-green-3-pcs-203945
Well that’s what I call interesting…
Water battery? I almost want a set. The survivalists might like these too:
Does anyone know more about the chemistry in these batteries? I can only find sodium-water, e.g.:
I’d love to read a HJK review of these.
60mA for 3 to 5 recharges? No thanks! There's nothing "green" about using these when you need to buy (and eventually dispose of) a huge quantity of these!
-Garry
What, if anything, useful can be powered from a 60mA battery??
There is prob an anode/cathode and the water acts as the connection between those. I think thats how those water powered clocks work.
No thanks, they have way to low capacity and I do not want to test primary batteries.
They do look more like a toy, than practical batteries.
Water activated batteries is not something new, weather probes uses it. A sealed battery can last for a long time, when you need it you break the seal and pour water on it, then it will work for a few hours.
Ahh, that is interesting. I think if marketed right these could be a nice educational toy.
Yeah I know they are worthless, it would just be entertaining to see how bad they are. You provide a valuable and useful service to us all, for which I thank you. No need to waste your time when we already know the outcome.
On an XM-L U2 with two in series you may get 50 theoretical lumens
60mA for how long though?
I remember doing this with lemons at school, great fun.
I also had until a few years ago, a digital clock that could be powered by a potato!