Lithium Ion Batteries.

The commercial for Lithium batteries says they are supposed to last something like eight times longer in electronic devices. but from my personal use of them i would say this is not correct. with previous normal Duracell, and Energizer batteries i was getting about ten really good pictures out of my camera before they died. but i bought the Energizer lithium ones in Brooklyn and put them in my camera and have not taken the first set out yet. it would seem that in fact they have lasted about %200 times longer then any previous. i must say this is incredible. also, they weigh half as much. they are pretty expensive (about $20 for ten batteries) but well worth the extra cost.