1.2V AA 2700 mAh Xcell NiMH Battery Tests

25 Oct
2013

1-2v-aa-2700-mah-xcell-nimh-battery

The 1.2V AA 2700 mAh Xcell NiMH batteries seem to offer a large capacity at a first glance, but we need to check if you actually get that much as hitting levels of 2700 mAh and being able to actually provide them in real conditions is something that the top battery brands are still struggling to do. Another thing to note with the higher capacity NiMH batteries is that they do have a faster initial self discharge, so they loose more of their capacity the first day they are charged than lower capacity NiMHs, unless they are from the LSD type. Anyway, lets us see what will these Xcell batteries be able to offer…


1-2v-aa-2700-mah-xcell-nimh-battery-capacity

We have started the test of the 1.2V AA 2700 mAh Xcell NiMH batteries as we normally do with a low constant current discharge rate of 0.2A and the result we got was 2191 mAh as capacity and that is way too little for a battery rated at 2700 mAh, disappointing us a bit. Going further by increasing the constant current load at up to 2.0A, these batteries do manage to provide good results, so they are handling well higher loads, it is just that the useable capacity you get is less than advertised. We’ve repeated the tests multiple times just to be sure that this is really the maximum we can get from the AA Xcell NiMH batteries and in the end we would recommend to choose different 2700 mAh batteries if you are in need of higher capacity.

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

– 2191 mAh at 0.2A load
– 1885 mAh at 0.5A load
– 1714 mAh at 1.0A load
– 1650 mAh at 2.0A load

– 2.758 Wh at 0.2A load
– 2.329 Wh at 0.5A load
– 2.029 Wh at 1.0A load
– 1.816 Wh at 2.0A load



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