Big lithium primaries?

[Chrontius]

Looking for 18650s in Li-MnO2.

Does such a thing exist? How long would they run a Twisty? This may be my new zombie-apocalypse light.

 

[marschw]

Can't help you on that... but I like the idea of a zombie-apocalypse light. I'd go with a low-current circuit (20mA or so) and Li-SOCl2, since they're available in big sizes, and have huge capacity and very low self-discharge...

 

[lolzertank]

Not 18650, but this should do well for an apocalypse light: http://www.batteryjunction.com/xl-205f.html

19Ah... hook up a LED at 20ma and you've got yourself 1000 hours of light.

 

[45/70]

I believe the 18650 cell was developed for powering laptops so, unless they come out with disposable batteries for laptops, I think you're going to be out of luck.

Dave