Duracell Pre-Charged Rechargeable NiMH AAA Batteries (4pk) are ideal for high-drain items such as digital cameras gaming devices and portable audio products
- Duracell Pre-Charged batteries are charged and ready for use right out of the package
- Duracell Pre-Charged batteries retain power for up to 365 days while not in use
- Can be recharged and reused hundreds of times
- Stays charged longer than RCR and have to be recharged less often
- Contains 4 AAA pre-charged rechargeable batteries
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Need more batteries like these.
Review is for the Enitime AA:
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GS Yuasa is a Japanese company that makes batteries mostly for sport vehicles.
My Enitime AAs came pre-charged with my new universal remote control. "Technology from Japan - Made in China". So far performance is comparable with my other low discharge batteries.
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; right from the packaging into your gadgets.
-They last a long time.
-Does not need special charger. You can use your existing NiMh charger.
Cons:
-This later technology is still expensive.
Other brands of low-discharged batteries are Eneloops by Sanyo Duracell Hybrid by Rayovac etc.
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Finally! Good rechargeable batteries.For many years rechargeable batteries (AAA AA C D) have been very disappointing because they "self-discharge" in a week or two while waiting to be used (or sitting on a store shelf). That's why you must always charge new batteries before using them.
These new Sony batteries finally solve the problem. They self-discharge very slowly keeping 90% of their charge after a year of storage. I have been using several AAA and AA Sony rechargeable batteries for a month now and am very pleased and impressed. I only wish that C and D cells were available.
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An eneloop by any other name...
[Updated Dec 21 2008]
I was only half-right when I boldly proclaimed that "Duracell Pre Charged AAA are rebranded Sanyo eneloop cells" in my original review. It turns out that the first batch of Duracell AAA cells I bought from Amazon are made in Japan and those are identical to eneloop (both mechanically and electrically). But lately I bought some more Duracell AAA from a warehouse club. Those are made in China and they are identical to the Rayovac Hybrid (see my scan in the Customer Images section). Note that the Rayovac Hybrid AAA has an average capacity of about 780mAh (compared to about 830mAh for eneloop AAA) so is not as good a value.
[Original review follows]
Judging from similarity of technical specifications and physical shapes of (+) and (-) terminals I am convinced that the Duracell Pre Charged NiMH cell is actually Sanyo Eneloop underneath a different wrapper. Therefore all the good things you heard about eneloop apply to Duracell 'Pre Charged' too.
My own testing has shown that the capacity of eneloop AAA cell is slightly above the claimed 800mAh. The Rayovac Hybrid AAA is usually cheaper but its capacity is slightly below 800mAh. Both brands are able to retain at least 85% of their charge after three months of storage. Just pick whichever brand is on-sale and you can't go wrong.
One small problem with the Duracell 'Pre Charged' cell is that: it looked too similar to the well-known 'Copper Top' alkaline cell. So there is a good chance that people may mistaken it for a disposable cell. Personally I prefer the distinctive-looking white case of the eneloop cell.
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