Features:

• Power lasts up to 7-times longer than similar alkaline battery
• Battery chemistry and construction differ in the two systems. Energizer e2 Lithium batteries are built in a spirally wound construction. This design helps the battery meet the high current drains of many of today's devices
• Since lithium is a very active material, it provides a great deal of power relative to the amount of material used. Lithium is not considered a heavy metal
• When powering a device, you should only use a lithium battery with other lithium batteries - not compatible for use alongside an alkaline
• This battery is not rechargeable

Editor Reviews:

Product Description:
All of Energizer e2 Lithium batteries' advantages combine to make them the World's Best AA batteries in high tech devices. First, they are the longest lasting AA batteries in high-tech devices, bar none. Second, both the Energizer e2 Lithium AA are 33 percent lighter than their alkaline counterparts. The increased portability afforded the user make them ideal for travel and situations where every ounce counts. Third, Energizer e2 Lithium batteries perform well in extreme temperatures, allowing digital cameras, flashes, CD players or MP3 players to work from the Arctic to the Sahara. Lastly, Energizer e2 Lithium batteries have a shelf life of up to 15 years vs. 7 years with ordinary alkaline, guaranteeing that they will perform when needed.

Amazon.com Product Description:
The Energizer AA lithium battery lasts five times as long as alkaline batteries in digital cameras, three times as long as batteries in other cameras and flash applications, and weighs less than typical AA batteries. It performs in extreme temperatures, from -40 degrees to 140 degrees F. Pack of four.

Rating : - Digital life!
Need batteries that last...want my moneys worth! These fit that bill!
Could be purchased cheaper at Sam's club but I opted to buy online. The service was great though!