Duracell Rechargeables StayCharged AAA Batteries, 4-Count
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Customer Reviews of Duracell Rechargeables StayCharged AAA Batteries, 4-Count
Customer Review: 4 or 5 stars, depending where they are made
Summary: 5 Stars
First, the disclaimer: There is no political motivation in this review. It is purely based on the findings of my measurement and facts. I hope no one should be offended.
I purchased three packs of these batteries. I found that one pack says "Made in Japan" and the other two "Made in China" in the back of package. Otherwise, the packaging is almost identical. There is, however, a very clear distinction on the battery itself. The Japanese made batteries have a white top while the Chinese made have a black top as shown in one of the photos I uploaded.
I was curious to see if there is a performance difference between the same line of batteries from different manufacturing plants. I have a La Crosse BC-700. So I put all three set into test mode, straight out of the package without any prior use. After 24 hours of measurements, the results are shown in the photos I uploaded.
The 8 batteries made in the Chinese factory averaged 790 mah. That is within 1.25% of the stated capacity. However, I found the variation among the samples is somewhat large, from 774 to 825.
The 4 batteries made in the Japanese factory averaged 834 mah. But more impressively, all samples were within the 832-838 range. This is an important characteristic because when you use multiple batteries in a device, the total capacity available is limited by the lowest one in the group.
I conclude that no matter where where these batteries are made, they at least meet expectation. With that said, I would prefer the "white top" batteries that are made in the Japanese factory. They are extremely consistent and offer higher capacity.
Customer Review: This is how batteries should be made!
Summary: 5 Stars
Regular NiMh batteries are old school; these new batteries are greener and better.
Pros:
-For a rechargeable battery, these batteries does not need to be charged before you use it for the first time
-They last a long time.
-Does not need special charger. You can use your existing NiMh charger.
Cons:
-Looks almost the same as regular Duracell alkalines except for the added color of lime green. You can confuse them with regular Duracells and mistakenly thrown away after losing charge.
-This later technology is still expensive. But you can get it on sale from time to time.
I also like Eneloops by Sanyo. But they are not easily available at your local stores unlike Duracells.
Duracells are made in Japan if it has a white top (around the positive anode) and made in China if it is black.
Customer Review: Fixed my battery problem
Summary: 5 Stars
I have a Japanese/English electronic dictionary that seems to suck AAA battery power like nobody's business. I was sick of having to constantly replace the batteries, and I knew I needed to move over to re-chargables.
I bought these Duracell Pre Charged Rechargeable Nimh AAA Batteries to use with Duracell Mobile Charger With 2AA And 2AAA Pre Charged Rechargeable Nimh Batteries, CEF23DX4N so that I could have a spare set of batteries charging along with the ones in my device.
These batteries hold a charge better than regular batteries, and the dictionary isn't sucking them up quite as quickly as it used to. Even then, when the batteries are dry I just pop a new set from the charger and I am ready to go.
Customer Review: Astounding Charge Capacity
Summary: 5 Stars
These batteries are amazing compared to the Eveready Energizers I was using previously. And not just a little better, as the Energizers were suppposedly 2500mAh, compared to these Duracells that are 2000mAh, yet these Duracells last for weeks and weeks in my Apple Wireless Mouse, compared to only a few days with the Energizers. And I have several different sets of Energizers that all have the same pathetic charge capacity. So go figure. The percentage indicator in my computer starts in the high 80% range, and then comes down to the 50% range in about a day or two, but then lasts for weeks until it gets down to the 20% range. Never seen anything like this kind of quality in a battery. If you're looking for a battery to last longer, these are the ones by a factor of 10 or 20 times longer.Customer Review: Much better than Energizer
Summary: 5 Stars
These batteries are great. The new 'precharged' technology is great where it can sit unused for a year and still have most of its charge unlike the older rechargeable technologies. These 800 mAh actually last longer in my noise canceling headphones then the 1000 mAh (non-precharged) of the same brand.
I had previously purchased Energizer rechargeable batteries and found that after only a couple of weeks of non-use they would be dead.. so every time you went to use them they would be useless. After getting these Duracells and also some PowerEx batteries, I realize that the Energizer batteries are cheap Chinese junk. oh, the duracells are made in Japan and are very nice quality.
Anyway I definatly would recommend the precharged Duracells to anyone.