For *really* long orgasms...

Be sure to use silicon nanowires!

The new version, developed through research led by Yi Cui, assistant professor of materials science and engineering, produces 10 times the amount of electricity of existing lithium-ion, known as Li-ion, batteries. A laptop that now runs on battery for two hours could operate for 20 hours, a boon to ocean-hopping business travelers.

That's right guys and gals, a ten-fold improvement in battery life! Also, increased durability and longevity of the batteries themselves of course, due to the stable nature of the nanotubes.