Posts Tagged ‘Duracell


The 1.5V AAA Duracell Alkaline batteries are our reference batteries for comparing how other brands’ AAA batteries are performing, because as we know the Duracell Copper Top are performing very well, though they may not be the ones offering the highest capacity in various conditions. The 1.5V AAA Duracell Alkaline batteries we used for testing here were with an expiration date of 03-2019, so they are supposedly offering a long shelf life of 6 years, but what about the capacity they can provide…


We have started the test of the 1.5V AAA Duracell Alkaline batteries as we normally do with a low constant current discharge rate of 0.1A and the result we got was 970 mAh as capacity and that is a very good result close to 1A. Increasing the constant current load to the higher values we use for testing the batteries continued to show very good performance and even in high loads they’ve managed to offer good performance. So it will be interesting to see how good other AAA size Alkaline batteries will compare in terms of capacity in our tests.

The performance of the 1.5V AAA Duracell Alkaline Batteries in our tests:

– 970 mAh at 0.1A load
– 777 mAh at 0.2A load
– 553 mAh at 0.3A load
– 336 mAh at 0.5A load

– 1.174 Wh at 0.1A load
– 0.916 Wh at 0.2A load
– 0.637 Wh at 0.3A load
– 0.378 Wh at 0.5A load


The 9V Duracell Alkaline batteries we test here are rated with up to 5 years shelf life and are marked for use up to 03-2017. Duracell’s website does not have detailed specifications about these batteries, so we have to check them out by testing the actual capacity we can get out of these. And since we are using the standard Duracell Copper Top Alkaline batteries as our reference to judge and compare to other batteries the result we get here is very important for our further tests.


To test the capacity that the 9V Duracell alkaline batteries can provide we are using a constant current discharge test with 0.05A load (50 miliampers) due to the fact that the total capacity of these batteries is not that high and they are not intended for use in situations where high current loads can be expected. The 9V Duracell Alkaline battery we have tested here managed to provide 311 mAh capacity before hitting the 6.6V cutoff voltage. We kind of expected the Duracell to perform a bit better than what we’ve got, but such capacity is to be expected from a decent 9V Alkaline battery anyway.

The performance of the 9V Duracell Alkaline Batteries in our tests:

– 311 mAh at 0.05A load

– 2.300 Wh at 0.05A load


On the internet there is a lot of talk about the standard Duracell Copper Top Alkaline batteries and the Duracell Procell Alkaline batteries intended for business and industrial use. You can find some claims that both are essentially the same battery, just with different packaging, however since we’ve tested both types of these we can confirm that there is slight difference between them. The Duracell Procell Alkaline batteries are indeed a bit better by providing a bit more capacity under the same conditions, so they are not the same as the standard Copper Top batteries that the company offers to consumers.


You can see that at low current drain the difference is just about 9% at 0.1A in favor of the Procell model, however as the current draw increases the gap continues to increase and the Procell batteries are able to deliver more – 15% at 0.2A, 18.5% at 0.5A and going to 1A the difference in useable capacity you get goes to a bit more than 17%. So the 1.5V AA Duracell Copper Top Alkaline batteries are clearly not as good as their Procell counterparts…

Duracell – Copper Top – Procell
0.1A load – 2348 mAh – 2557 mAh
0.2A load – 1808 mAh – 2120 mAh
0.5A load – 1050 mAh – 1287 mAh
1.0A load –   506 mAh –   619 mAh

In the end if you can get Duracell Procell and you really need the better capacity they provide along with the supposedly better performance in more extreme operating conditions (we still need to check that as well) and they do not come at a significantly higher price compared to the standard Duracell Copper Top Alkaline batteries you should go for the Procell ones.