1.2V AAA 800 mAh Energizer Accu Recharge Extreme NiMH Battery Tests

3 Apr
2019

An interesting product from Energizer in the form of rechargeable AAA NiMH batteries that is apparently made wit 4% recycled batteries and that is a world’s first according to Energizer. The 1.2V AAA 800 mAh Energizer Accu Recharge Extreme NiMH come pre-charged and are of the low self discharge with charge lasting up to 12 months in storage. Marketing aside these do seem to be quite good for a mid-range in terms of capacity where higher current may be required and not so favorable temperature conditions are present.


The 1.2V AAA 800 mAh Energizer Accu Recharge Extreme NiMH batteries do manage to show pretty good results in our tests, though at 0.1A (our lowest constant current test setting) they fall somewhat short of the 800 mAh rating. Looking at the numbers and the discharge curves however you can see that increasing the discharge load all the way up to 1.0A the drop in the available capacity is relatively slow, so apparently these can handle higher current requirements pretty well indeed.

The performance of the 1.2V AAA 800 mAh Energizer Accu Recharge Extreme NiMH batteries in our tests:

– 732 mAh at 0.1A load
– 719 mAh at 0.2A load
– 713 mAh at 0.5A load
– 684 mAh at 1.0A load

– 0.931 Wh at 0.1A load
– 0.905 Wh at 0.2A load
– 0.871 Wh at 0.5A load
– 0.805 Wh at 1.0A load

8.4V 170 mAh Duracell Recharge Ultra NiMH Battery Test

2 Apr
2019

We have picked up a 8.4V Duracell Recharge Ultra NiMH battery rated at 170 mAh capacity to test out and compare with other batteries of this type we have already tested. The 8.4V NiMH category is still not well represented in our tests, so we are trying to fix that by adding more batteries to test, but it will take some more time. The 170 mAh capacity is lower than anything we have tested so far, there are alternatives available with higher capacity available on the market than what Duracell is offering with this product.


We are doing our regular 0.05A constant current discharge test for this type of batteries with a cut-off voltage set a 7V to check the usable capacity in mAh and Wh that the 8.4V 170 mAh Duracell Recharge Ultra NiMH battery can actually deliver. We got 158 mAh as usable capacity in our tests and while it is a bit short of the rated capacity it is not that bad, the result however shows that this particular battery might not do that well when used in more power demanding applications.

The performance of the 8.4V 170 mAh Duracell Recharge Ultra NiMH Batteries in our tests:

– 158 mAh at 0.05A load

– 1.384 Wh at 0.05A load

– To check the technical specifications of the 8.4V 170 mAh Duracell Recharge Ultra battery…

7000 mAh ADATA X7000 Power Bank Test

1 Apr
2019

We have picked up another power bank from ADATA, this time a smaller in size and capacity and fancier looking compared to the other models we have tested so far. The 7000 mAh ADATA X7000 comes with mostly aluminum case where the battery is and a smaller plastic part where the electronics is housed, a slim, light and good looking power bank for sure. It comes equipped with dual USB charging ports and can charge two devices simultaneously with a maximum combined charging current of 2.4A. The supported input current for charging the battery inside the power bank is 2.0A, so it can be charged faster and can charge devices faster with up to 2.4A max current. Not to mention that the price of the power bank is quite attractive, making it an interesting choice for lower capacity model with faster charging options.

7000 mAh ADATA X7000 Power Bank Specifications:
– Capacity: 7000mAh (Rechargeable Li-Polymer battery)
– Colors: Titanium/ Blue/ Red
– Dimensions (L x W x H): 148.2 x 73.9 x 12.3mm / 5.8 x 2.9 x 0.48″
– Weight: 210g / 7.4oz
– Input: DC 5V/2A (Micro USB)
– Output: DC 5V/2.4A max (USB-A)
– Accessory: Micro USB cable, User Manual
– Warranty: 1 year


We have tested the 7000 mAh ADATA X7000 Power Bank with 1.0A constant discharge current as the more often used as well as with 2.4A as the maximum supported by the power bank. In both cases we are seeing that the electronics of the power bank manages to provide pretty stable and high (close to 5V) output and a very good capacity levels in terms of mAh and as a result in Wh as well. The voltage cure is not straight line like we’ve seen with previous models from ADATA, but a jagged one very similar to that we’ve seen in our 5000 mAh GP Portable Power Bank (FP05M) Test.

The performance of the 7000 mAh ADATA X7000 Power Bank in our tests:

– 5035 mAh at 1.0A load
– 4700 mAh at 2.4A load

– 25.19 Wh at 1.0A load
– 23.24 Wh at 2.0A load

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