Archive for the ‘Battery Comparison’ Category

Back in 2013 we have tested the last generation of Sanyo Eneloop XX AAA NiMH batteries, right before they changed from Sanyo to Panasonic and since we have just managed to test the latest generation of Panasonic Eneloop Pro AAA NiMH batteries we have decided to see how much has changed in 5 years time and if the change is actually for the better or not. New generations should mean improvements in features and performance and when you give it 5 years of time, then you should expect some change, right?


The Sanyo Eneloop XX (HR-4UWXB) we tested back in 2013 were a third generation XX / PRO series of Eneloop rated at 950 mAh with minimum capacity of 900 mAh with 500 recharge cycles and 85% capacity retained in a year. Fast forward to Panasonic Eneloop PRO (BK-4HCDE) which are the latest fifth generation Eneloop Pro batteries we have 930 mAh minimum capacity and 930 mAh rating with 500 recharge cycles and 85% capacity left after 1 year. It seems nothing that much has changed in terms of base specifications for the the XX / PRO NiMH AAA size Eneloop batteries, but let us see how are things in our tests 5 years apart and two generations difference.

mAh Capacity – Eneloop XX – Eneloop Pro
— 0.1A load – 925 mAh – 903 mAh
— 0.2A load – 856 mAh – 901 mAh
— 0.5A load – 827 mAh – 888 mAh
— 1.0A load – 689 mAh – 634 mAh

Wh Capacity – Eneloop XX – Eneloop Pro
— 0.1A load – 1.153 Wh – 1.131 Wh
— 0.2A load – 1.047 Wh – 1.103 Wh
— 0.5A load – 0.954 Wh – 1.051 Wh
— 1.0A load – 0.733 Wh – 0.658 Wh

The test results show that the newer Eneloop PRO AAA bateries have a little less usable capacity at the lowest 0.1A load current, but manage to perform better in general in lower to medium current loads. The performance of the 5th generation Pro batteries under 0.1A, 0.2A and 0.5A is closer and more consistent, however at the higher 1.0A load the newer Pro is behind what the earlier 3rd gen Eneloop XX batteries managed to provide. In general not that much difference between the two and Eneloop XX / Pro AAA NiMH batteries still remain very good performer apparently. It is however interesting to note that capacity wise not much has changed in 5 years time for the AAA cells here, there are still no 1000 mAh models or higher for example, so are we reaching a limit for the capacity of the low self discharge NiMHs? Guess we’ll see soon enough after checking some of the other newer Eneloop models and compare them to the older generations that we have tested a while ago…

9v-duracell-copper-top-vs-procell-alkaline-battery

We have already tested both the 9V Duracell Alkaline batteries and the 9V Duracell Procell Alkaline batteries and we’ve seen interesting results, we’ve decided to do a direct comparison between the two since there is a common belief that the Duracell Copper Top Alkaline batteries are actually the same as the Duracell Procell Alkaline. If the two types of batteries are exactly the same they should be able to provide very similar useable capacity in our tests, however this is not the case as you will see in a moment. In order to make sure that we are properly comparing the two types of batteries we got them with matching expiration dates just to be sure that there should be no significant difference due to self discharge if they were produced in bigger time difference.


9v-duracell-copper-top-vs-procell-alkaline-battery-capacity

So far our comparisons between Duracell Copper Top and Duracell Procell batteries have shown slight advantage in favor of the Procells for the AA and AAA size, so this time we kind of expected to get similar results, but to our surprise we did not. In fact the standard Copper Top Duracell battery did provide better result and with over 20% higher useable capacity than the Procell this is a significant different. We did check the expiration dates to match and have repeated the test with another 9V Duracell Procell battery just to be sure there was nothing wrong, but we got pretty much the same lower capacity from the Procell. In the end we can say that we were really disappointed from the 9V Duracell Procell batteries, we expected to see more from them, especially considering the fact that around 300 mAh is what a decent 9V Alkaline battery should be able to provide in our test conditions.

Duracell – Copper Top – Procell
0.05A load – 311 mAh – 245 mAh

With these results there is no way to recommend the Procell over the standard Copper Top model when talking about 9V Alkaline batteries from Duracell, though that is not the case with AA and AAA size Duracell batteries where we’ve seen very good performance from both Copper Top and Procell Duracell batteries. In fact when talking about 9V Alkaline batteries we are not going to recommend you to go for a Duracell at all, regardless if Copper Top or Procell as we have already tested other brands that are capable of giving you close to 50% more capacity than what Duracell does… and at a price that can be lower than that of Duracell!

aa-battery-highlighted

We have already tested more than 10 various 1.5V AA-size primary batteries (single use non-rechargeable models) from various brands including some of the most popular such as Duracell, Energizer, Panasonic, Toshiba, Varta and others so we have decided to do a little ranking by listing the top performing models in our tests in the various load scenarios we are using for testing. As a reminder we are using constant current load tests with 0.1A, 0.2A, 0.5A and 1.0A for the 1.5V AA-size Alkaline batteries, so we are going to rate the best batteries in four different charts as we’ve seen that one battery that performs very well under low load may not be the best with higher load and vice versa…


top-10-best-performing-1-5v-aa-alkaline-batteries-1

Here is our current top 10 of 1.5V AA Alkaline batteries at 0.1A constant current load:

2748 mAh – 1.5V AA Varta Max Tech Alkaline Battery
2700 mAh – 1.5V AA Varta High Energy Alkaline Battery
2557 mAh – 1.5V AA Duracell Procell Alkaline Battery
2517 mAh – 1.5V AA Panasonic Pro Power Alkaline Battery
2467 mAh – 1.5V AA Toshiba Alkaline Battery
2377 mAh – 1.5V AA Maxell Super Alkaline Battery
2348 mAh – 1.5V AA Duracell Alkaline Battery
2326 mAh – 1.5V AA Energizer Industrial Alkaline
2237 mAh – 1.5V AA Maxell Alkaline Battery
2231 mAh – 1.5V AA GP Super Alkaline Battery


top-10-best-performing-1-5v-aa-alkaline-batteries-2

Here is our current top 10 of 1.5V AA Alkaline batteries at 0.2A constant current load:

2120 mAh – 1.5V AA Duracell Procell Alkaline Battery
2114 mAh – 1.5V AA Varta Max Tech Alkaline Battery
1959 mAh – 1.5V AA Maxell Super Alkaline Battery
1941 mAh – 1.5V AA Varta High Energy Alkaline Battery
1903 mAh – 1.5V AA Toshiba Alkaline Battery
1873 mAh – 1.5V AA Q-Lite Alkaline Battery
1869 mAh – 1.5V AA Energizer Industrial Alkaline
1859 mAh – 1.5V AA Panasonic Pro Power Alkaline Battery
1839 mAh – 1.5V AA GP Super Alkaline Battery
1808 mAh – 1.5V AA Duracell Alkaline Battery


top-10-best-performing-1-5v-aa-alkaline-batteries-3

Here is our current top 10 of 1.5V AA Alkaline batteries at 0.5A constant current load:

1287 mAh – 1.5V AA Duracell Procell Alkaline Battery
1216 mAh – 1.5V AA Varta High Energy Alkaline Battery
1178 mAh – 1.5V AA Panasonic Pro Power Alkaline Battery
1129 mAh – 1.5V AA Energizer Industrial Alkaline
1078 mAh – 1.5V AA Varta Max Tech Alkaline Battery
1070 mAh – 1.5V AA Maxell Super Alkaline Battery
1050 mAh – 1.5V AA Duracell Alkaline Battery
1062 mAh – 1.5V AA Q-Lite Alkaline Battery
1025 mAh – 1.5V AA Toshiba Alkaline Battery
1010 mAh – 1.5V AA Maxell Alkaline Battery


top-10-best-performing-1-5v-aa-alkaline-batteries-4

Here is our current top 10 of 1.5V AA Alkaline batteries at 1.0A constant current load:

619 mAh – 1.5V AA Duracell Procell Alkaline Battery
572 mAh – 1.5V AA Panasonic Pro Power Alkaline Battery
566 mAh – 1.5V AA Maxell Super Alkaline Battery
545 mAh – 1.5V AA Varta Max Tech Alkaline Battery
537 mAh – 1.5V AA Varta High Energy Alkaline Battery
506 mAh – 1.5V AA Duracell Alkaline Battery
500 mAh – 1.5V AA Energizer Industrial Alkaline
483 mAh – 1.5V AA Maxell Alkaline Battery
482 mAh – 1.5V AA Q-Lite Alkaline Battery
458 mAh – 1.5V AA GP Super Alkaline Battery

We are going to be updating these charts as we test new batteries in order to get a clear view of the situation with battery capacity and what batteries will work best for your specific needs. Have in mind that it is not always up to the highest capacity and you should always take into consideration the price of the batteries as well. For example if the second battery in the chart offers just 1% less capacity, but you can buy it for 30% less then you might sacrifice the minimal gain in extra capacity because of the much better price, so do have that in mind as well.


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