Posts Tagged ‘aa’

1.5V AA Varta Max Tech Alkaline Battery Tests

27, Aug 2013

1-5v-aa-varta-max-tech-alkaline-battery

The 1.5V AA Varta Max Tech Alkaline batteries are probably the highest-end Alkaline batteries that Varta makes, though that is not very clearly stated. The 1.5V AA Varta Max Tech batteries are labeled as +130% in digital cameras versus Varta Simply Alkaline we are expecting these to perform quite well in terms of the capacity they will provide in our tests. Varta positions these batteries for use in high-tech devices such as MP3 players, digital cameras, photo flashes etc. and the pack we picked-up for testing was with an expiration date of 06-2019 with the batteries supposed to have something like 7 years of shelf life. Anyway, lets us see how good with the Varta Max Tech batteries perform in our tests…


1-5v-aa-varta-max-tech-alkaline-battery-capacity

We have started the test of the 1.5V AA Varta Max Tech Alkaline batteries as we usually do with a low constant current discharge rate of 0.1A and we’ve managed to get the surprisingly good result of 2748 mAh in terms of capacity – the highest for far we’ve got from an AA-size Alkaline battery! Going for a 0.2A constant current load these batteries still perform great and provide a lot of capacity and even further increasing the load they still manage to perform very well. So a great job from Varta with these batteries as they easily manage to beat the standard Duracell Copper Top Alkaline batteries in all of the load levels we test at, though at higher loads they may not be able to offer the maximum capacity among the models we’ve tested so far, they do it at the lowest level meaning that they are the best choice so far for application where the power requirements are low, even though they also perform great with applications requiring higher power and they are originally intended for such use.

The performance of the 1.5V AA Varta Max Tech Alkaline Batteries in our tests:

– 2748 mAh at 0.1A load
– 2114 mAh at 0.2A load
– 1078 mAh at 0.5A load
– 545 mAh at 1.0A load

– 3.390 Wh at 0.1A load
– 2.542 Wh at 0.2A load
– 1.216 Wh at 0.5A load
– 0.601 Wh at 1.0A load

1.5V AA Toshiba Standard Alkaline Battery Tests

26, Aug 2013

1-5v-aa-toshiba-alkaline-batery

The 1.5V AA Toshiba Alkaline batteries are a standard Alkaline batteries with no fancy naming to tell you they are something special or different than normal primary batteries for single use. In fact these are the Standard Alkaline batteries from Toshiba, though they also have a lower-end Blue Line Alkaline batteries and higher-end named Alpha Power. The shelf life of the 1.5V AA Toshiba Standard Alkaline batteries is supposed to be 7 years and the expiration date of the ones we used for the tests here is 06-2019. According to Toshiba these batteries are ideal for portable radios, handheld computers, pagers, pocket electronic games etc. Surprising we even found something like a specs sheet for these batteries on Toshiba’s website, though it did not mention anything about expected capacity, you can find the link below.


1-5v-aa-toshiba-alkaline-batery-capacity

We have started the test of the 1.5V AA Toshiba Alkaline batteries with a constant current discharge rate of 0.1A here we’ve managed to get 2467 mAh and that is nothing short of great performance at this level of constant current load. Furthermore going at 0.2A the batteries also performed superb, though at even higher constant current load levels their performance is a bit lower than the best performing models we’ve tested so far. So it seems that these Toshiba Standard Alkaline batteries are great for use in devices with lower power requirements, where they can provide the best performance they can. At lower constant current load these batteries were able to outperform the standard Duracell Copper Top Alkaline batteries, though at higher loads the Duracell performs slightly better.

The performance of the 1.5V AA Toshiba Alkaline Batteries in our tests:

– 2467 mAh at 0.1A load
– 1903 mAh at 0.2A load
– 1025 mAh at 0.5A load
– 324 mAh at 1.0A load

– 3.067 Wh at 0.1A load
– 2.286 Wh at 0.2A load
– 1.189 Wh at 0.5A load
– 0.352 Wh at 1.0A load

– Download the specifications of the Toshiba Standard Alkaline batteries in PDF…

1.2V AA 1800 mAh GP Rechargeable NiMH Battery Tests

25, Aug 2013

1-2v-aa-1800-mah-gp-rechargeable-nimh-battery

The 1.2V AA 1800 mAh GP Rechargeable NiMH batteries are a middle range rechargeable batteries from GP with a typical capacity of 1800 mAh and a minimum one of 1750 mAh. These are sub 2000 mAh rechargeable batteries they will probably have a hard time at our 2A constant current load test, but they should handle well at lower rates. Since we just tested the slightly lower capacity 1600 mAh model from GP we are quite interested to see how these compare to them, especially since the 1600 mAh model was able to provide a bit over 1800 mAh capacity at 0.2A constant current load.


1-2v-aa-1800-mah-gp-rechargeable-nimh-battery-capacity

We have started the test of the 1.2V AA 1800 mAh GP Rechargeable NiMH batteries with a constant current discharge rate of 0.2A here we’ve managed to get 1829 mAh or a slightly more than the typical rated capacity. This value is just 9 mAh more than what the 1600 mAh model from GP managed to offer at this test, however moving to higher loads the 1800 mAh NiMHs do manage to outperform the 1600 mAh model. So while for lower loads the 1.2V AA 1600 mAh GP Rechargeable NiMH batteries might perform roughly the same, moving to higher loads this 1800 mAh version will be the better choice as they are able to even provide some useable capacity at 2A constant current load.

The performance of the 1.2V AA 1800 mAh GP Rechargeable NiMH Batteries in our tests:

– 1828 mAh at 0.2A load
– 1729 mAh at 0.5A load
– 1270 mAh at 1.0A load
– 103 mAh at 2.0A load

– 2.219 Wh at 0.2A load
– 2.018 Wh at 0.5A load
– 1.352 Wh at 1.0A load
– 0.106 Wh at 2.0A load


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