Energizer L91BP-8 Ultimate Lithium AA Batteries (8-Pack)

All the four batteries died in less than 2 weeks. please consider buying it from another seller or from nearby local shops ( if it's available). I am really disappointed after paying such a huge price for just four batteries and it lasted only for 1- 2 weeks.maximum.

Battery looks old and no power when installed. Avoid.

Longest lasting Lithium battery ever. I use them in outdoor cameras l just replaced 4 that lasted 6 years

Fantastic long life batteries

Très bonne piles. 8 piles pour actionner des stores électriques Somfy dans une véranda extérieur. Ouverture et fermeture chaque jour à des températures variant de -25 Celsius l’hiver à 40 Celsius l’été. Durée de vie des piles de plus de 2 ans. Des piles alcalines ne font pas 3 mois. Par contre, le prix affiché chez Canadien Tire est nettement plus avantageux( 12 piles pour environ 18$)

These are expensive. I only use them for specific purposes where battery life and / or weight are important. In this case I'm using these Lithium Iron Di-sulfide batteries for a headlamp I'm using for backpacking. These are 33% lighter than alkaline batteries and they provide about 25% more life in my headlamp with a voltage curve that is much flatter than alkaline batteries. A flat voltage curve means voltage remains more constant from start to end of battery life. And that means my headlamp doesn't start out bright then steadily degrade to zero. With these lithium batteries, performance remains more consistent right up until they abruptly run out of juice. That translates into 10.6 hours at full power instead of 8.5 hours. Or, 116 hours at low power instead of 93 hours. That means I can carry fewer batteries and less weight. The flat voltage curve also means that Li Iron Di-sulfide batteries also handle a high drain device like a headlamp better than alkaline batteries. They also perform much better in cold weather so winter backpacking is a good use of these batteries. In sub freezing temps the battery life advantage over alkaline batteries can be as much as 4X with a drastically more consistent voltage..

Well worth the extra money. A much longer life