Posts Tagged ‘Duracell battery

We have picked up a 8.4V Duracell Recharge Ultra NiMH battery rated at 170 mAh capacity to test out and compare with other batteries of this type we have already tested. The 8.4V NiMH category is still not well represented in our tests, so we are trying to fix that by adding more batteries to test, but it will take some more time. The 170 mAh capacity is lower than anything we have tested so far, there are alternatives available with higher capacity available on the market than what Duracell is offering with this product.

We are doing our regular 0.05A constant current discharge test for this type of batteries with a cut-off voltage set a 7V to check the usable capacity in mAh and Wh that the 8.4V 170 mAh Duracell Recharge Ultra NiMH battery can actually deliver. We got 158 mAh as usable capacity in our tests and while it is a bit short of the rated capacity it is not that bad, the result however shows that this particular battery might not do that well when used in more power demanding applications.

The performance of the 8.4V 170 mAh Duracell Recharge Ultra NiMH Batteries in our tests:

– 158 mAh at 0.05A load

– 1.384 Wh at 0.05A load

To check the technical specifications of the 8.4V 170 mAh Duracell Recharge Ultra battery…


The 9V Duracell Procell Alkaline batteries we are testing here are from the Professional series of Duracell, a series that has lot of controversy surround it regarding if these are the same batteries or not as the standard Duracell Copper Top batteries. We’ve already tested AA and AAA size Copper Tops and Procells with the same expiration date and compared them to reveal that the Procell batteries do perform a bit better, so we are expecting to see something similar with the 9V Procell batteries by Duracell as well and we are of course going to compare them to the 9V copper Tops that we have already tested here. The expiration date of the battery tested here is 03-2017, something that is very important to note when doing battery comparisons as while Alkaline batteries do self discharge pretty slow over time as compared to NiMHs for example they still do.


In order to test the capacity of the 9V Duracell Procell Alkaline batteries we are using a constant current discharge rate of 0.05A (50 miliampers) and we have managed to get 245 mAh and that is quite Ok for a 9V Alkaline battery, though we must say we kind of expected to see better performance out of these Duracell batteries. So in order to be sure we have picked up a second Procell battery and it got us 242 mAh under the same conditions, a bit of a disappointment considering the fact that we have managed to get better results out of a 9V Duracell Copper Top battery.

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

– 245 mAh at 0.05A load

– 1.812 Wh at 0.05A load

To download a datasheet with the manufacturer’s battery specifications…


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