Archive for the ‘NiCd/NiMH Batteries’ Category

1.2V AAA 900 mAh LADDA NiMH Battery Tests

26, Feb 2019

The LADDA brand of batteries is owned by IKEA and there are rumors that they are the same as the Eneloop Pro batteries, but much cheaper in terms of price and that is something that we do plan to check and confirm soon. After we make up to date tests of the latest Eneloop Pro products as our Eneloop XX AAA test data is already quite outdated. Do note that not all of the LADDA batteries are the same as some of them are made in China and others in Japan, like the 900 mAh AAA ones made in Japan is the same factory that apparently produces the low self discharge Eneloop batteries. These IKEA LADDA batteries are rated at 900 mAh typical capacity and they do seem to deliver a bit more according to our tests at lower loads making them get a good rating from us thanks to the low price you pay for them.


1.2V AAA 900 mAh LADDA NiMH batteries manage to deliver more than 900 mAh (their capacity rating) at lower current loads of 0.1A and 0.2A in our tests, going up to 0.5A load the capacity you get is still quite good, although a bit below the capacity rating. At 1.0A load which is over the battery capacity rating the usable capacity gets lower, but that is kind of to be expected. Overall very good results for the price you pay for these IKEA batteries, though probably they are best for low to mid-range loads.

The performance of the 1.2V AAA 900 mAh IKEA LADDA NiMH batteries in our tests:

– 926 mAh at 0.1A load
– 925 mAh at 0.2A load
– 863 mAh at 0.5A load
– 588 mAh at 1.0A load

– 1.153 Wh at 0.1A load
– 1.137 Wh at 0.2A load
– 1.013 Wh at 0.5A load
– 0.614 Wh at 1.0A load

1.2V AA 2100 mAh Fujicell NiMH Battery Tests

12, Dec 2013

1-2v-aa-2100-mah-fujicell-nimh-battery

The 1.2V AA 2100 mAh Fujicell NiMH batteries are the NiMH model from Fujicell with lower capacity as we’ve already tested their 2800 mAh NiMH that ended up more like 2500 mAh. So far the results we’ve seen from Fujicell batteries are very good in terms of available capacity for the price these batteries are being sold at. Not the highest possible capacity and usually a bit lower than the NiHM rating, though they are probably stating the typical and no minimal capacity is mentioned anywhere, but these batteries are available at a better price than most other similar products. Now we are going to test the 2100 mAh NiMH model from Fujicell to see what it can deliver, note that the 2100 mAh rating is probably the typical and the minimum capacity is probably 2000 mah, though it is not mentioned specifically.


1-2v-aa-2100-mah-fujicell-nimh-battery-capacity

Starting the tests of the 1.2V AA 2100 mAh Fujicell NiMH batteries with a low constant current discharge rate of 0.2A got us 2025 mAh as useable capacity and that is not bad, though a bit short from the stated (typical?) rating and acceptable if the battery is indeed a 2000 mAh minimum rating as we suspect. Going for higher load we are still getting pretty good performance in terms of useable capacity out of these batteries. It is interesting to see how the discharge curves for the voltage drop are kind of “grouped” – for the lower and higher current loads we are using for testing.

The performance of the 1.2V AA 2100 mAh Fujicell NiMH batteries in our tests:

– 2025 mAh at 0.2A load
– 1870 mAh at 0.5A load
– 1613 mAh at 1.0A load
– 1384 mAh at 2.0A load

– 2.456 Wh at 0.2A load
– 2.237 Wh at 0.5A load
– 1.725 Wh at 1.0A load
– 1.458 Wh at 2.0A load

1.2V AA 2400 mAh Powerex Imedion NiMH Battery Tests

9, Dec 2013

1-2v-aa-2400-mah-powerex-imedion-nimh-battery

The 1.2V AA 2400 mAh Powerex Imedion NiMH batteries are of the Low Self Discharge Type (LSD NiMH) and are considered to be among the best high capacity and high performance LSD NiMH batteries by many, competing with the like of Sanyo Eneloop for example. These batteries are rated at 2400 mAh typical and 2250 mAh minimum guaranteed capacity and the fact that they are LSD means they are supposed to loose not more than 15% of their capacity per year of storage. They also come pre-charged and can be recharged up to 1000 times. But let us see how good will they perform in our tests and see if they will manage to hold up to their reputation well or not.


1-2v-aa-2400-mah-powerex-imedion-nimh-battery-capacity

Starting the tests of the 1.2V AA 2400 mAh Powerex Imedion NiMH batteries with a low constant current discharge rate of 0.2A got us 2414 mAh as or with other words we are getting a bit over the typical capacity that they are rated at, so a good start. Increasing the load to 0.5A these batteries still manage to provide capacity higher than their minimum rating of 2250 mAh, so more good results here. And going with even higher constant current loads of 1.0A and 2.0A we are still seeing very good results in terms of useable capacity. So in short, meeting their rating and providing more than good results in both low and high load applications and while not as good as Sanyo Eneloop XX in terms of capacity they are also a bit cheaper than the Eneloops. Anyway, these batteries are very good for what they are rated at and for their price, so you cannot go wrong getting them.

The performance of the 1.2V AA 2400 mAh Powerex Imedion NiMH batteries in our tests:

– 2414 mAh at 0.2A load
– 2283 mAh at 0.5A load
– 2168 mAh at 1.0A load
– 1917 mAh at 2.0A load

– 3.002 Wh at 0.2A load
– 2.781 Wh at 0.5A load
– 2.535 Wh at 1.0A load
– 2.099 Wh at 2.0A load


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