I know, these are not rechargeable, but they are really the best AA batteries for long term storage for emergency use and do 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 cant live without, get the latest lithium battery technology thats proven to be the worlds 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