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  • Sony Batteries Cycle Energy 800 mAh Pre-Charged AAA Rechargeable Batteries (Discontinued by Manufacturer)
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Sony Batteries Cycle Energy 800 mAh Pre-Charged AAA Rechargeable Batteries (Discontinued by Manufacturer)

by Sony

List Price: $15.99
Price: $14.99 & FREE Shipping on orders over $35. Details
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Ships from and sold by Amazon.com. Gift-wrap available.
  • New improved NiMh rechargeable battery technology
  • Already charged and ready to use
  • Stays 85% charged after 1 year of storage
  • Recharge up to 1000 times

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$14.99 & FREE Shipping on orders over $35. Details In Stock. Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

Sony Batteries Cycle Energy 800 mAh Pre-Charged AAA Rechargeable Batteries (Discontinued by Manufacturer) + Sony NHAAB4KN Cycle Energy 2000 mAh Pre-Charged AA Rechargeable Batteries + Sony BCG34HRE4KN Cycle Energy Quick with Refresh Charger and 4 Pre-Charged 2000 mAh AA Batteries (Discontinued by Manufacturer)
Price for all three: $52.93

These items are shipped from and sold by different sellers.

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Technical Details

  • Brand Name: Sony
  • Model: NH-AAA-B4K
  • Item Package Quantity: 1

Product Details

  • Product Dimensions: 0.5 x 2.5 x 4.5 inches ; 1.8 ounces
  • Shipping Weight: 0.8 ounces (View shipping rates and policies)
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B000PHQ0U2
  • Item model number: NH-AAA-B4K
  • Average Customer Review: 4.5 out of 5 stars  See all reviews (36 customer reviews)
  • Date first available at Amazon.com: June 17, 2003

Product Description

Sony Cycle Energy 800 mAh Pre-Charged AAA Rechargeable Batteries

Customer Questions & Answers

Customer Reviews

Also reduces waste!
Mike K.
So far, I've been able to more than double that usage time with these Sony batteries.
Robert J. Diaz II
They work well and hold their charge.
Summa Nulla

Most Helpful Customer Reviews

16 of 17 people found the following review helpful By Frederic C. Towers on October 6, 2008
Verified Purchase
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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The description of this product (Sony Cycle Energy Pre-Charged AAA Rechargeable Batteries) makes similar claims as the Sanyo eneloop AAA cells, such as:
- Capacity of 800mAh
- 'Stays 85% charged after 1 year of storage'
- 'Recharge up to 1000 times' just like the original eneloop cells (2nd-gen eneloop cells are rated for 1500 cycles)

However, my actual measurement (using the La Crosse BC1000) showed that the average capacity for Sony AAA cells is only 766mAh. Note that on each cell it actually says: "typ.800mAh min.750mAh", so this is still considered within spec. On the other hand, eneloop AAA cells are measured to be 830-840mAh, or nearly 10% higher than that of Sony cells

My long-term self-discharge data, based on AA version of Sony Cycle Energy cells, showed that they only retained an average of 69% charge after 1 year. In contrast, the eneloop cells were tested to retain around 85% charge, just like advertised.

As of this writing, the Sony Cycle Energy AAA cells are priced even higher than Sanyo eneloop cells. So although they are decent quality batteries, there is really no reason to pay more and settle for less.

In additional to the Sanyo eneloop, here are some other low-cost alternatives with even higher capacities:
-
...Read more ›
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6 of 7 people found the following review helpful By M. Su on March 7, 2009
Verified Purchase
I use these batteries in my digital camera. Got them not long ago, it works a long time in the camera. Longer than my old 900m ones. I use the old 900m ones in my remotes now, those doesn't require as much power usage.

Switched to all rechargeable batteries to be more eco-friendly. Many people still buy the batteries at $0.99 store which lasts very short time and end up as hazard trash. I hope the manufactures can ship the products such as remotes with the rechargeable batteries to promote it.
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4 of 5 people found the following review helpful By C on August 22, 2011
Had my 4 Sony CycleEnergy AA battery for a little over a year now and have only recharged it 3 times . Most of the time the batteries was in stored in a zip lock bag placed away in a dry place. When I took the Sony batteries out of the zip lock bag today, all had brown spots seeping out near the battery contact area out. I think battery acid is leaking out of the battery. Very poor quality especially if the battery was charged only 3 times and most of the time it wasn't even being used. My other brands of rechargeable was stored in the same bag and had no signs of the problem. It was a waste of money and time since now I have to go out and purchase an alternative replacements.
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1 of 1 people found the following review helpful By Robert J. Diaz II on January 9, 2010
Verified Purchase
I've only had these batteries for a few weeks but so far they've been fantastic. I bought them as replacements for the batteries in my cordless phone, which I've been replacing nearly annually for several years as they've worn out. I am hoping that these will last longer but I'm not sure if they will.

These new batteries arrived nearly fully charged and I have had no trouble with them keeping a charge or recharging in the phone. The power has been very consistent, too. Previously, with the batteries I've been using for years, I could use the phone for just over an hour before the batteries would run out of power. So far, I've been able to more than double that usage time with these Sony batteries. I am pleased with them and will be getting more of these batteries to use in remote controls, games, etc.
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1 of 1 people found the following review helpful By MG on October 1, 2010
Verified Purchase
These batteries are great! I purchased the AA version of these about 4 years ago for use in my Xbox 360 controllers which were like hungry hungry hippos happily chowing on alkaline batteries. After looking at the cost of feeding them, I decided to go with some rechargables. I used both some energizers and sonys. The Energizers died in less than a year, and the Sonys are still going strong with regular use. I have now purchased these AAA's for a new wireless headset and they are wonderful. I was never a fan of rechargables before this, but now I can see how they can really save you a ton of money and frustration. As a side note, many of my friends also suggest the sanyo Eneloops, as they sound very similar in usage and should hold up for a long time.
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