The Optimum line features “extra life” and “extra power,” enabling a flashlight to shine brighter and longer. Optimum's enhanced performance is driven by a new proprietary cathode system that outperforms even Coppertop. The technology is one of the biggest innovations for alkaline batteries in the past 50 years.

Duracell Optimum nominal battery voltage (ie the approximate voltage value used to identify the battery type) is the same as the nominal voltage of other Duracell alkaline batteries (1.5V), yet, Duracell Optimum has an additional active secret ingredient to its cathode on top of its alkaline chemistry, allow to deliver ...

On top of premium alkaline chemistry, a new cathode system allows these 1.5V batteries to provide up to 200% extra life in your device, whilst having the ability to deliver extra power to motorised gadgets. This is all down to the batteries having a higher running voltage when compared to alternatives.

Duracell launched its most ground-breaking innovation, Duracell Optimum, in 2019. In 2022, Duracell launched POWER BOOST Ingredients in both Optimum and Coppertop AA/AAA batteries.

The battery life in these two brands differs. Energizer lasts three times longer in clocks than the Duracell, but Duracell takes the crown by lasting two times longer when used in flashlights. To ensure that our environment is not harmed, both brands support the Call2Recycle program.

Duracell Optimum: Best Alkalines for high-drain devices The Optimum is even better, with 1.35V after 30 minutes and 1.26V after an hour, where the Ultra Power cells were starting to run low. Even after three hours there was still over 1.2W in each battery; only the lithium batteries on test last longer.

Duracell's most groundbreaking innovation yet, Duracell Optimum alkaline battery has a new cathode system that can deliver up to 200% Extra Life in some devices¹, or Extra Power in other devices².

Key benefits of OPTIMA YELLOWTOP® batteries include deep-cycling battery and OPTIMAL starting power, up to 3x longer service life, 15x more resistant to vibration, leak proof, mountable in virtually any position, maintenance-free, and more than 300 discharge / recharge cycles.

The Basics At Cinema Sound – and at many of the studios we work with – the Duracell ProCell batteries are the de-facto standard. Believed to be the “longest lasting” and “best value” AA battery, we've been buying them by the hundreds for years.

These batteries definitely have a bit more power to them and they are lasting longer. They also have a nice look to them so I can tell the difference between the regular ones and these new ones. Overall I'm happy with them.

Optima batteries have proven themselves time and time again to be the absolute best on the market for high-performance battery solutions. With batteries to fit most vehicles, they have a solution for any application.

Have a 3x longer lifetime compared to traditional lead-acid batteries. Performs incredibly well in extreme environments with a wide range of operating temperatures. Optima batteries are completely sealed, non-spillable and maintenance-free. Mounting options are endless for custom applications.

Duracell uses Duralock Power Preserve Technology, whereas Energizer operates PowerSeal. In terms of power longevity, Duracell seems to have that advantage. Energizer has a longer storage lifespan and wins the price battle, which may be the deciding factor for most people.

The Best AA Batteries: Reviews and Recommendations

• Best Overall: Energizer Ultimate Lithium AA Batteries.
• Best Rechargeable: Panasonic Eneloop AA Batteries.
• Best Budget: Amazon Basics High-Performance AA Batteries.
• Best for Smoke Detectors: Rayovac High-Energy AA Batteries.
• Best for Trail Cameras: EBL AA Batteries.

Duracell Optimum will last longer than previous Duracell Alkaline batteries in a range of mid to high drain devices * (e.g. Xbox One Wireless Controller rumbling playing Forza 7, Fujifilm Instax mini 11 camera).

Energizer® Ultimate Lithium™ Batteries Nothing outlasts Energizer® Ultimate Lithium™ AA batteries. The Energizer® Ultimate Lithium™ batteries are not only the #1 longest-lasting AA batteries…they are complete with leak resistance and performance in extreme temperatures (-40ºF to 140ºF or -40ºC to 60ºC).