The Duracell Ultra Alkaline AA 1.5V Battery is Duracell’s flagship high-performance, single-use cylindrical power cell. It is engineered with a specialized internal chemical composition specifically to deliver up to 100% more power in high-drain devices compared to standard industry testing. Positioned above the standard Copper Top line, the Ultra series is the premium choice for devices that pull sudden, heavy bursts of current, preventing immediate voltage collapse and ensuring devices operate at peak performance for much longer periods.Â
✨ Key Features
- Powercheck Built-In Tester: Features a unique, integrated thermal strip on the side of the battery casing; pressing the two designated white dots instantly displays the remaining power level.Â
- Duralock Power Preserve Technology: Formulated with high-purity chemical inhibitors that lock in energy, guaranteeing a shelf life of up to 10 years in ambient storage.Â
- High-Drain Transient Optimization: Features lower internal resistance (~81 m-Ohm) to facilitate massive current delivery without severe voltage drop under heavy loads.
- Nylon Top Closure Leakage Guard: Shielded with a premium, flame-retardant nylon top cap and a robust steel enclosure to resist structural bulging and prevent acid leakage.

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