Todays high tech devices come with high-tech users and both demand a high power battery and Energizer e2 Lithium Titanium Batteries answer that need. Energizer manufactures them with a proprietaty titanium compound and advanced cell construction, Energizer e2 Titanium Technology is a performance alkaline battery that delivers longer lasting power in energy hungry electronic devices. Energizer E squared Lithium Batteries are not onlyleak resistant and last longer than conventional batteries, but they also weigh 33% lighter than traditional batteries. These Energizer lithium batteries and Engergizer titanium batteries are ideal for MP3 players, Film Cameras, Digital Cameras, Flashlights, LED Flash lights and Night Vision equipment.