Test/Review of Duracell AA Ultra 2400mAh (Green-Copper)

Duracell AA Ultra 2400mAh (Green-Copper)

Official specifications:

  • Capacity: 2400mAh
  • Nominal voltage: 1.2V
  • Life: 300 cycles within 5 years
  • Low self discharge (LSD), can stay charged for 1 year

Maximum temperature raise at different discharge currents: 1A:+0,9°C, 2A:+2,9°C, 3A:+5,2°C, 5A:+10,6°C, 7A:+15,9°C, 10A:+22,5°C
This is the premium AA cells from Duracell and their chargers need much longer than specified time to charge them, due to the higher capacity.

This is very nice discharge cuurves the they tracks nicely and are above 1V even at 10A discharge.


The cells has very good performance.

Notes and links

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

300 cycles.

eneloop 2100 cycles?

Eneloop 2000mAh can take a lot of cycles, not eneloop 2400mAh, they are rated at 500 cycles.

More likely eneloop Pro, so not 2100 cycles...

Or panasonic 2700s

Using HKJ s comparisons they look very very close to the Amazon black 2400.

I have these and they perform really well. On par with my eneloop pro for a fraction of the price.

But my package is different from the one reviewed, mine says “long life ion core” not “ultra”. The cell looks exactly the same.

Where did you find these batteries in a package like that?

I have a bunch of the DX1500 Duracells but they are packaged like this:


(Also, walmart price matches them, $9 a pack is the lowest I could find.)

Always curious to how well they performed. I've no complaints with mine when they are charged using a smart charger.

EU Duracell shop.

Duracell cannot do the same marketing in US, because Energizer stole the bunny and registered a trademark on it.

As an FYI on these batteries.

These batteries might be good when new, but mine didn’t last very long. All four of mine now have over 1000 mili ohms of internal resistance (charger only goes up to 999). One battery caused a buzz in a charger……….ie: oscillation of the control electronics. 3 of them I could not get out of the low mode on a flashlight. They have very few cycles on them.

I have never had a regular Eneloop go bad. The 8 Gen-1 cells that I bought long ago (2008?) that are in my metal detector still work fine. So as you can imagine, I will never by buying any more Duracell 2400mAh Ion Cores.

I’ve had the AAA version for about 3 years & are doing fine.

Same here.

I had a similar experience with the Duracells. Worked fine for a year or so and then went totally bad. Total waste of money in my opinion.

Longevity. I keep hear this about genuine Eneloops. Still a reason to buy them.