Test/Review of Duracell Ultra Power AA

Duracell Ultra Power AA

Official specifications:

  • Battery Size Code: AA
  • Battery Voltage: 1.5V
  • Nominal Internal Impedance: 181mOhm @ 1kHz
  • Battery Technology: Alkaline
  • Battery Terminals: Raised Positive and Flat Negative
  • External Diameter: 14.5mm
  • External Height: 50.5mm
  • Weight: 24g
  • Will stay charged for up to 5 or 10 years when unused (Depending on where you read).
  • Battery IEC Code: LR6
  • Operating Temperature Max: 54°C
  • Operating Temperature Min: -20°C
  • Up to 40% more power than Duracell plus at high loads.

The "best" alkaline batteries from Duracell. Each cell includes a device to measure remaning power.

As usual the capacity of alkaline cells varies with load. These cells has very good capacity for alkaline, but cannot match lithium batteries.


This is the best alkaline cell I have tested until now, but I did not see the 40% improvement compared to Duracell plus (Only 14% at 0.5A).

Notes and links

How is the test done and how to read the charts
Compare to other AA/AAA batteries: Alkaline/NiMH/Lithium

Thanks for the test/review :slight_smile:

Is this correct? The date on those batteries seems to be 8 years from now. I thought that the “Duralock” batteries where supposed to have 10 year shelf life when new. Energizer has similar 10-year shelf life alkaline batteries that are marked with “Powerlock”.

On this website they say 5 years: http://www.duracelldirect.co.uk/pno/mx1500b12.html

Oh. الصفحة الرئيسية لدوراسيل says it would be 10 years. :o

I just checked my packs, they both (Plus/Ultra) says 10 years.