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Archive for the ‘NiCd/NiMH Batteries’ Category
The 1.6V AA 1500 mAh Turnigy Rechargeable NiZn batteries are pretty much like all other Chinese NiZn batteries being sold out there, these are just made for the Hobby King’s Turnigy brand and offer the standard 1500 mAh capacity. We’ve already discussed the NiZn rechargeable batteries in more detail, so now we are just going to focus on their performance. Just a bit of warning – do not try to charge NiZn batteries in normal NiMH chargers and be careful when using them in various devices as some electronics might not be able to handle the slightly higher voltage of these batteries even when compared to Alkaline’s nominal voltage, let alone the even lower NiHM nominal voltage.
We have started the test of the 1.6V AA 1500 mAh Turnigy Rechargeable NiZn batteries as we normally do with a low constant current discharge rate of 0.2A and the result we got was 1583 mAh as capacity or a bit over the rating ofthe batteries of 1500 mAh. So a very good start for the Turnigy NiZn batteries at a lower load, and going at 0.5A and 1.0A constant current load they still manage to perform great with useable capacity a bit below 1500 mAh. Even at the very high current load of 2.0A the 1.6V AA 1500 mAh Turnigy Rechargeable NiZn batteries manage to provide you with almost 1400 mAh useable capacity and that is a great result. In the end we can say that the Turnigy Rechargeable NiZn batteries do perform very well and have pleasantly surprised us with their results, so if you need NiZn batteries you might want to check the Turnigy ones, especially considering the good price.
The performance of the1.6V AA 1500 mAh Turnigy Rechargeable NiZn batteries in our tests:
– 1583 mAh at 0.2A load
– 1463 mAh at 0.5A load
– 1447 mAh at 1.0A load
– 1397 mAh at 2.0A load
– 2.603 Wh at 0.2A load
– 2.350 Wh at 0.5A load
– 2.276 Wh at 1.0A load
– 2.080 Wh at 2.0A load
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.
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
The 1.2V AA 2300 mAh Maxell Rechargeable NiMH batteries we got for testing here are rated as 2300 mAh minimum capacity and that is the number printed on their package and this kind of surprised us as usually NiMH battery manufacturers print with big numbers on the front the typical capacity and somewhere else with small letters the minimum capacity that their cells should provide. The 2300 NiMHs we’ve got for testing apparently are now being replaced with a newer model that offers 2500 mAh capacity, though as it was not yet available in the shop we got these from we got only the 2300 mAh version.
We have started the test of the 1.2V AA 2300 mAh Maxell Rechargeable NiMH batteries with a low constant current discharge rate of 0.2A (the lowest load for AA NiMHs in our tests) and the result we got was 2328 mAh capacity. This value is well within the minimum capacity rating for the batteries, so we can say these Maxell NiMHs perform very well and furthermore increasing the load to 0.5A and 1.0A the batteries not only manage to still provide very good level of capacity, but the difference is actually quite small between the two and even at 2.0A load we still get good capacity. So the 1.2V AA 2300 mAh Maxell Rechargeable NiMH batteries do manage to perform very well not only in lower load applications, but in a very high ones as well by providing good capacity in various applications requiring more power.
The performance of the 1.2V AA 2300 mAh Maxell Rechargeable NiMH Batteries in our tests:
– 2328 mAh at 0.2A load
– 2182 mAh at 0.5A load
– 2156 mAh at 1.0A load
– 1547 mAh at 2.0A load
– 2.902 Wh at 0.2A load
– 2.640 Wh at 0.5A load
– 2.469 Wh at 1.0A load
– 1.598 Wh at 2.0A load