Energizer e2 Lithium, Size AAA, 4 pack non-rechargeable, single use batteries.

These are not rechargeable, however they are really the best AAA batteries for long term storage for emergency use and can last up to 7 times longer than alkaline batteries. Energizer is the only company that makes them too.

• Great for back up use, when you cannot afford to deal with the variables of rechargeable batteries and/or for extreme temperature situations. For the countless electronic gadgets that you can’t live without, get the latest lithium battery technology that’s proven to be the world’s longest lasting AA and AAA batteries in high-tech devices. Other things you should know:
• Lasts up to 8x longer in digital cameras (versus Energizer® MAX®. Results vary by camera.)
• Weigh 1/3 less than standard alkaline batteries
• Perform in extreme temperatures from -40°F to 140°F
• 15 year storage life
• Leak resistant construction