Posts Tagged ‘aa’

1.2V AA 1600 mAh GP Rechargeable NiMH Battery Tests

25, Aug 2013

1-2v-aa-1600-mah-gp-rechargeable-nimh-battery

The 1.2V AA 1600 mAh GP Rechargeable NiMH batteries are a middle range rechargeable batteries from GP with a typical capacity of 1600 mAh and a minimum one of 1550 mAh. At first glance there is nothing special about these batteries, they are not offering very high capacity and since they are sub 2000 mAh they will probably have a hard time at our 2A constant current load test. But anyway lets us see how good will these batteries perform in our tests and what we should expect from them…


1-2v-aa-1600-mah-gp-rechargeable-nimh-battery-capacity

We have started the test of the 1.2V AA 1600 mAh GP Rechargeable NiMH batteries with a constant current discharge rate of 0.2A here we’ve managed to get 1819 mAh capacity and that kind of surprised us as these batteries are rated as 1600 mAh typical capacity. Furthermore getting a bit over 1800 mAh from a 1600 mAh NiMH battery at a 0.2A constant current load is nothing short of great performance, going to 0.5A constant current load we got 1614 mAh and that is also a bit over the typical capacity that these batteries are rated for, so another great result. At 1.0A constant current load these batteries still managed to provide over half of their rated capacity though we should note that the voltage they provided during most of their discharge cycle was very close to 1V, so this can cause some problems like premature invoking of low battery cutoff. And going for 2.0A constant current load as expected is a it too much for the 1.2V AA 1600 mAh GP Rechargeable NiMH batteries, in fact our power profile test show that they can handle up to about 1.7A load. Nevertheless these NiMH batteries from GP Batteries are performing very good and could be rated more like as 1800 mAh and not as 1600 mAh as our tests have shown.

The performance of the 1.2V AA 1600 mAh GP Rechargeable NiMH Batteries in our tests:

– 1819 mAh at 0.2A load
– 1614 mAh at 0.5A load
– 815 mAh at 1.0A load
– 0 mAh at 2.0A load

– 2.205 Wh at 0.2A load
– 1.836 Wh at 0.5A load
– 0.823 Wh at 1.0A load
– 0 Wh at 2.0A load

1.5V AA Maxell Alkaline Battery Tests

24, Aug 2013

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The 1.5V AA Maxell Alkaline batteries are the mid-range Alkaline batteries from Maxell, they also have a Super Alkaline series that is supposed to offer a bit more capacity than this standard Alkaline models and we’ll test them s well to confirm. The 1.5V AA Maxell Alkaline batteries we got for testing here are with an expiration date of 01-2018, so they are offering quite a long shelf life, but let us see what they will offer in terms of capacity and how good they will perform compared to other Alkaline batteries we’ve tested so far…


1-5v-aa-maxell-alkaline-battery-capacity

Beginning our test of the 1.5V AA Maxell Alkaline batteries with a constant current discharge rate of 0.1A we’ve managed to get 2237 mAh capacity and that is a very good result though not the highest we’ve got from Alkaline batteries we’ve tested already. Increasing the constant current load further and these Alkaline batteries from Maxell still manage to perform quite well, so we can say that they are providing above the average capacity and this only rises our expectation from Maxell’s Super Alkaline batteries that are supposed to offer even better results.

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

– 2237 mAh at 0.1A load
– 1807 mAh at 0.2A load
– 1010 mAh at 0.5A load
– 483 mAh at 1.0A load

– 2.775 Wh at 0.1A load
– 2.166 Wh at 0.2A load
– 1.164 Wh at 0.5A load
– 0.538 Wh at 1.0A load

1.5V AA Panasonic Pro Power Alkaline Battery Tests

23, Aug 2013

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The 1.5V AA Panasonic Pro Power Alkaline batteries are from the mid to high-range of primary batteries from Panasonic situated at one level below the top Evolta range of Alkaline batteries. Panasonic claims that it has improved capacity of the new Pro Power batteries so that they can offer up to 80% extra performance compared to their last years Alkaline range of batteries (the maximum difference measured between Panasonic Pro Power production 2012 and Panasonic Standard Power production 2011 by Panasonic). The 1.5V AA Panasonic Pro Power Alkaline batteries we got for testing are with an expiration date of 02-2020, so quite a long shelf life for these batteries. Panasonic says that these are ideal for high and medium drain appliances, so let us see how they perform in our tests.


1-5v-aa-panasonic-pro-power-alkaline-battery-capacity

Starting our tests of the 1.5V AA Panasonic Pro Power Alkaline batteries as usual with a constant current discharge rate of 0.1A we’ve managed to get 2517 mAh capacity and that is actually a very good result fr an Alkaline battery, though not the highest we’ve got so far (we should also check the Panasonic Evolta batteries). Increasing the constant current discharge rate to 0.2A and the batteries still manage to handle very well, and even going further we are still getting very good performance. So the 1.5V AA Panasonic Pro Power Alkaline batteries are probably among the top Alkaline batteries you can currently get, and they are certainly giving better results than the standard Duracell Copper Top batteries.

The performance of the 1.5V AA Panasonic Pro Power Alkaline Batteries in our tests:

– 2517 mAh at 0.1A load
– 1859 mAh at 0.2A load
– 1178 mAh at 0.5A load
– 572 mAh at 1.0A load

– 3.159 Wh at 0.1A load
– 2.298 Wh at 0.2A load
– 1.378 Wh at 0.5A load
– 0.636 Wh at 1.0A load


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