atomic batteries

anyone tried or even seen them despite their high costs ?
looks like the way to go ,they last 20 years without a re charge ¬
i dont know how common or what price is tritium to make the batteries .
sound s like a job for Doc Oc

$1200 for a unit..phew ,but 20 years usage sounds usefull ...

NASA use them... They're on Curiosity right now, trundling around Mars. You might ask them if you can take it for a spin...

knuckles:
$1200 for a unit..phew ,but 20 years usage sounds usefull ...

Unfortunately they only put out 50 to 350 nanoAmps (0.05 to 0.35 microAmps).

http://www.citylabs.net/index.php?option=com_wrapper&view=wrapper&Itemid=20

I prefer mine bigger...

Show off.

Is that you stood next to it?

So. Many. Inappropriate. Jokes.

majenko:
Show off.

Is that you stood next to it?

Yep. But you can't see him when he hasn't got his bandages on...

That is a NASA physicist or contractor and she is certainly female, no that is not me. The link is a hot-link to Wikipedia's article on RTGs.

knuckles:
http://micgadget.com/32782/you-can-easily-buy-an-nuclear-battery-in-china-that-could-last-for-a-thousand-years/

Let me sell you a pack of "Prosperity Seeds" so you will be rich!

knuckles:
http://micgadget.com/32782/you-can-easily-buy-an-nuclear-battery-in-china-that-could-last-for-a-thousand-years/

The half life of tritium is 12.32 years. It's not going to last 1000 years. After 100 years only 0.36% will remain. After 1000 years, 3.7E-25. I'm sure the betavoltaics have a cutoff threshold at some point where there is no voltage despite some residual beta activity.