Urine Powered Battery Developed

Saeed al-Sahaf writes "Research investment into developing smaller and cheaper chips to process information in disposable health tests has been significant, but they were still reliant on an external power source. The researchers at Singapore's Institute of Bioengineering and Nanotechnology think they have overcome this problem with their latest urine powered battery. From the article "The battery is composed of paper, soaked in copper chloride, sandwiched between layers of magnesium and copper. The whole thing, once laminated in plastic, is just a millimeter thick, and 6cm by 3cm in size." The breakthrough promises a cheap and disposable power source for home health tests."

Comments

Wow

[Murphy Murph]

So, let me get this straight...
It's a battery.
Shipped dry.
Electrolyte added only when needed.
How is this new?

(It's not really urine powered anyway. Urine is just the electrolyte.)