Posts Tagged ‘GP NiMH battery’

1.2V AAA 1000 mAh GP NiMH Battery Tests

17, Nov 2013

1-2v-aaa-1000-mah-gp-nimh-battery

The 1.2V AAA 1000 mAh GP NiMH batteries we test here are of the standard NiMH type and are rated at 1000 mAh typical capacity and 930 mAh minimum guaranteed. Our experience so far with GP batteries has shown that some models are performing great while others not so well, so it will be interesting to see to which group we can add these batteries. So time to start the testes…


1-2v-aaa-1000-mah-gp-nimh-battery-capacity

As we usually do we have started the test of the 1.2V AAA 1000 mAh GP NiMH batteries with a low constant current discharge rate of 0.1A and the result we got was 1085 mAh and that is pretty impressive for a battery rated at 1000 mAh. Going further with a load of 0.2A and we managed to get 1005 mAh which is still over the typical rating of these batteries, and with even higher load we still manage to get good results, though not that impressive as at 0.5A we are are a below the minimum rating. Still we are seeing very good performance from the 1.2V AAA 1000 mAh GP NiMH batteries.

The performance of the 1.2V AAA 1000 mAh GP NiMH batteries in our tests:

– 1085 mAh at 0.1A load
– 1005 mAh at 0.2A load
– 876 mAh at 0.5A load
– 796 mAh at 1.0A load

– 1.325 Wh at 0.1A load
– 1.211 Wh at 0.2A load
– 1.029 Wh at 0.5A load
– 0.874 Wh at 1.0A load

1.2V AA 2700 mAh GP NiMH Battery Tests

30, Oct 2013

1-2v-aa-2700-mah-gp-rechargeable-nimh-battery

The 1.2V AA 2700 mAh GP NiMH batteries are the largest capacity NiMHs offered by the company and we are expecting to see good results from them. With GP’s batteries we’ve seen quite interesting results in our tests, some models are a bit disappointing, others are surprisingly good, but since we’ve seen varying results with the highest capacity NiMH batteries from different brands we are hoping that GP did not make any compromise with their top model at least.


1-2v-aa-2700-mah-gp-rechargeable-nimh-battery-capacity

Starting the test of the 1.2V AA 2700 mAh GP NiMH batteries as we normally do with a low constant current discharge rate of 0.2A and the result was 2664 mAh as capacity which is great result for a battery rated at 2700 mAh (typical capacity), we can say that it is perfect. Furthermore increasing the constant current discharge rate at up to 2.0A the batteries continue to perform great offering great useable capacity levels. We can say for sure that the 1.2V AA 2700 mAh GP NiMH Rechargeable batteries are really good choice and are true to their ratings, unlike the not so well performing 2500 mAh model that we’ve tested some time ago that got us a bit disappointed.

The performance of the 1.2V AA 2700 mAh GP NiMH Batteries in our tests:

– 2664 mAh at 0.2A load
– 2527 mAh at 0.5A load
– 2404 mAh at 1.0A load
– 2223 mAh at 2.0A load

– 3.329 Wh at 0.2A load
– 3.082 Wh at 0.5A load
– 2.801 Wh at 1.0A load
– 2.436 Wh at 2.0A load

1.2V AA 2500 mAh GP Rechargeable NiMH Battery Tests

6, Sep 2013

1-2v-aa-2500-mah-gp-rechargeable-nimh-battery

The 1.2V AA 2500 mAh GP Rechargeable NiMH batteries are supposedly from the higher capacity rechargeable models from GP and we had high expectations when we started testing them. They are rated at 2500 mAh typical and 2450 mAh minimal capacity, though our test results show a bit different picture and in order to avoid a possible mistake we even repeated the tests 3 times and got pretty much the same results. So take a look below to see what you can expect from these NiMH batteries from GP. We’ve already seen that different GP models can provide different results and apparently not all models are as good as you could expect them to be.


1-2v-aa-2500-mah-gp-rechargeable-nimh-battery-capacity

We have started the test of the 1.2V AA 2500 mAh GP Rechargeable NiMH batteries as we normally do with a low constant current discharge rate of 0.2A and the result we got was 2223 mAh as capacity and that is a bit of a disappointment. With more than 12% less than the advertised capacity and with repeating the tests multiple times just to be sure we are a bit disappointed, though the batteries did manage well at 0.5A and 1.0A, the results at high load with 2.0A were also disappointing. Hopefully the even higher capacity GP NiMH batteries will be able to provide better results than what we’ve got from these.

The performance of the 1.2V AA 2500 mAh GP Rechargeable NiMH Batteries in our tests:

– 2223 mAh at 0.2A load
– 2037 mAh at 0.5A load
– 1808 mAh at 1.0A load
– 66 mAh at 2.0A load

– 2.769 Wh at 0.2A load
– 2.388 Wh at 0.5A load
– 1.987 Wh at 1.0A load
– 0.068 Wh at 2.0A load


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