You've got spare batteries put aside in case of an emergency but did you know that those batteries are dying on your shelf?  Standard Alkaline batteries have around a 2 year shelf life.  What happens when those 2 years are up?  What happens after 1 year?

For your emergency needs, you need batteries that have at least a 10 year shelf life.  You could run to the store and purchase some ultra high dollar cells or you can purchase the same quality for a lot less.

Compare the cost and features of these with the big names and common sense will tell you what to buy.

• Standard AA size lithium 1.5V battery (14.5 Dia. x 50 H mm) , peak voltage: 1.72V
• 2900 mAh Ultra-high capacity --- double running time compared to Alkaline AA cells
• 0.6oz/cell super light weight  25% less than Alkaline AA
• Extended shelf life  (10 years plus)
• Superior low and high temperature operations. 
• Specially designed to work well in all High Drain Applications.
• Replace the Energizer L91BP-4 Lithium. L-91 Photo Batteries , and L91, AA, E91, EN91, LR06, 15LF, FR6, 15-LF

We keep these in stock and also keep them in our emergency kits.  We trust them.  That should tell you something about the quality.

Warning:

• This is a Non-Rechargeable Battery. Do not recharge, disassemble or incinerate this battery
• Do not mix lithium batteries with other types of batteries.
• AA Lithium battery 's initial voltage is 1.72V , once current loaded, voltage will drop to 1.5V.