Posts Tagged ‘alkaline battery

1-5v-aa-panasonic-evolta-alkaline-battery

The 1.5V AA Panasonic Evolta Alkaline batteries are supposedly the best primary batteries of the Alkaline type that Panasonic has. Panasonic claims that these Evolta series offer exceptional performance in low, mid and high drain products, but we need to check and confirm for ourselves before agreeing to that claim. We have already tested Panasonic Pro Power Alkaline batteries and they were performing among the top ones, so we are starting with high expectation from the Evolta as well, but let us see what capacity they can actually deliver. The batteries we tested here were with an expiration date of 02-2019.


1-5v-aa-panasonic-evolta-alkaline-battery-capacity

We have started the test of the 1.5V AA Panasonic Evolta Alkaline batteries as we normally do with a low constant current discharge rate of 0.1A and the result we got was 2342 mAh as capacity. With this result the Evolta goes somewhere in the middle of our Top 10 Alkaline batteries for low load applications and rates, but is still less than the Panasonic Pro Power. Increasing the constant current load to 0.2A and the performance of the Evolta goes below the top 10, the same goes for the higher load of 0.5A and only at the 1.0A test it barely manages to get into the bottom of the Top 10. So the conclusion is that although the Evolta is performing quite well at low loads, but it does not handle as well with higher constant current loads as our tests are showing. There are simply better alternatives to the Panasonic Evolta Alkaline batteries.

The performance of the 1.5V AA Panasonic Evolta Alkaline batteries in our tests:

– 2342 mAh at 0.1A load
– 1641 mAh at 0.2A load
– 850 mAh at 0.5A load
– 478 mAh at 1.0A load

– 2.946 Wh at 0.1A load
– 2.010 Wh at 0.2A load
– 1.011 Wh at 0.5A load
– 0.549 Wh at 1.0A load

1-5v-aa-verbatim-premium-alkaline-battery

The 1.5V AA Verbatim Premium Alkaline batteries are the only standard AA size Alkaline batteries offered by Verbatim, even though they are labeled as Premium there is no regular version available. The expiration date on the batteries we’ve tested was 06-2017 and even though we could not find a shelf live cited, we can safely assume something like 5 years for these batteries.


1-5v-aa-verbatim-premium-alkaline-battery-capacity

We have started the test of the 1.5V AA Verbatim Premium Alkaline batteries as we normally do with a low constant current discharge rate of 0.1A and the result we got was 2166 mAh as capacity – a good result for low load applications, though far from the best ones we’ve seen from AA size. Increasing the load ot 0.2A we still get a decent performance, but going higher than that at 0.5A and 1.0A we can see that these batteries are not performing that well, meaning they are not the wisest choice for high load applications.

The performance of the 1.5V AA Verbatim Premium Alkaline batteries in our tests:

– 2166 mAh at 0.1A load
– 1527 mAh at 0.2A load
– 613 mAh at 0.5A load
– 306 mAh at 1.0A load

– 2.626 Wh at 0.1A load
– 1.797 Wh at 0.2A load
– 0.674 Wh at 0.5A load
– 0.329 Wh at 1.0A load

9v-energizer-alkaline-battery

The 9V Energizer Alkaline batteries we are testing here are the standard Alkaline batteries from Energizer that should be the same as the 9V Industrial model that we have already tested, or at least this is what the official datasheets are suggesting giving pretty much the same specs for both types of batteries. The expiration date for this battery is written as 2018 and the production date is 08-2013 with a 5 year shelf life given by Energizer, unfortunately since the production and expiration date for the 9V Energizer Industrial battery we have tested already is way too different as this is a very fresh battery we cannot make direct comparison. This however gives the chance to see how fast do these batteries self discharge over time considering that the 9V Alkalines are with pretty low capacity already compared to AAA and AA size Alkaline batteries for example.


9v-energizer-alkaline-battery-capacity

In order to test the capacity of the 9V Energizer Alkaline batteries we are using a constant current discharge rate of 0.05A (50 miliampers) and we have managed to get 456 mAh. Excellent result and the reason we are getting such a high capacity is most likely that the battery has been produced just about three months ago, as for example the 9V Energizer Industrial Alkaline battery has managed to give us 380 mAh, but with a production date almost a year and a half before this one. So what you absolutely must do for 9V Alkaline batteries is to get them as fresh as possible in order to ensure that you will be getting really the maximum capacity out of them. So far this fresh battery from Energizer has provided the highest capacity in our tests for 9V Alkaline batteries, but as we’ve seen from the 9V Energizer Industrial Alkaline battery tests these batteries do perform very well even if you do not get them with a very recent production date.

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

– 456 mAh at 0.05A load

– 3.418 Wh at 0.05A load

To download a datasheet with the manufacturer’s battery specifications


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