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Sanyo Eneloop AA NiMH Pre-Charged Rechargeable Batteries - 4 Pack (Discontinued by Manufacturer)

by Sanyo
| 93 answered questions

Price: $14.99 & FREE Shipping
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  • 4-pack of 2,000 mAh rechargeable AA batteries for digital cameras, remotes, and more
  • Pre-charged and ready to use right out of the pack; preserves charge for long periods of time
  • Extremely slow self-discharge rate maintains 85 percent of capacity after 1 year of storage
  • Combines best features of AA alkaline (ready for use) and rechargeable (reusable) batteries
  • Can be charged up to 1,000 times (including partially) without experiencing memory effect
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Frequently Bought Together

Sanyo Eneloop AA NiMH Pre-Charged Rechargeable Batteries - 4 Pack (Discontinued by Manufacturer) + Sanyo Eneloop AAA NiMH Pre-Charged Rechargeable Batteries 4 Pack (Discontinued by Manufacturer) + Sanyo Eneloop AA NiMH Pre-Charged Rechargable Batteries with Charger - 4 Pack (Discontinued by Manufacturer)
Price for all three: $49.71

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Technical Details

  • Brand Name: Sanyo
  • Model: SEC-HR3UTG-4BP
  • Battery Description: nickel-metal-hydride
  • Battery Type: NiMh
  • Item Package Quantity: 1

Product Details

  • Product Dimensions: 2.2 x 0.5 x 2 inches ; 1.6 ounces
  • Shipping Weight: 1 pounds (View shipping rates and policies)
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • ASIN: B000IV2WAW
  • Item model number: SEC-HR3UTG-4BP
  • Average Customer Review: 4.6 out of 5 stars  See all reviews (536 customer reviews)
  • Amazon Best Sellers Rank:
  • Date first available at Amazon.com: October 2, 2001

Product Description

From the Manufacturer

Sanyo 2000Mah are used for rechargeable AA batteries for digital cameras, remotes, and are Pre-charged and ready to use right out of the pack, preserves charge for long periods.

Product Description

Sanyo 2000Mah are used for rechargeable AA batteries for digital cameras, remotes, and are Pre-charged and ready to use right out of the pack, preserves charge for long periods.

Customer Questions & Answers

Customer Reviews

They last a very long time and hold their charge pretty well.
Brian McL
These are the best rechargeable batteries I've ever used, much better than the Energizer NiMH that I had.
Seneschal
If I need more rechargeable batteries in the future, I will definitely be buying this brand.
T. Brown

Most Helpful Customer Reviews

1,901 of 1,927 people found the following review helpful By NLee the Engineer HALL OF FAMETOP 10 REVIEWER on January 6, 2007
[Updated Oct 24, 2008]
My original review on the Sanyo eneloop NiMH cells was written nearly two years ago. Since then, I have learned a lot more about the characteristics about eneloop and other low-self-discharge cells. So it is time to clear up some inaccurate information I wrote about eneloop's self-discharge rate.

1. I was told that the Sanyo eneloop cells were not 100% fully charged when they leave factory. This makes sense because new cells are fast-charged in the factory to save time. In order to avoid problem with heat and gas built-up, they cannot be charged to 100%. I have tested some eneloop cells that were manufactured 20 months ago, and they still maintained about 70% charge. On the other hand, cells manufactured 6 months ago contain about 75% charge. This confirmed that the discharge rate is much lower than I previously estimated.

2. The self-discharge rate of eneloop (and other LSD cells) is not linear! My own testing showed that a fully charged eneloop may lose 10% of its initial charge during the first month of storage, but in the second months it may lose just 2-3%. The rate becomes even slower after three months. In fact, my 5-month self-discharge test using various brands of LSD cells gave nearly identical results as my previous 3-month test.

3. When an eneloop cell is freshly charged, its capacity actually measures at about 5% higher than its rated capacity (2100mAh vs. 2000mAh). In my previous tests, I used measured capacity as base to calculate the percentage loss. This results in apparently higher percentage loss. Had I used the rated capacity as base value, the self-discharge rate would be about 5% lower.
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358 of 366 people found the following review helpful By Vlad G VINE VOICE on March 12, 2007
Verified Purchase
I received several sets of Eneloops in February and label told they were produced in April - so they sat at warehouse for nine month. I put them into camera and they worked just fine. Kudos Sanyo!

I should also mention that Sanyo includes reusable battery holders with each set of four. These holders do not look very sturdy, but they perfectly usable.

Technically, Sanyo solved the main problem with NiMh technology - frightening self-discharge rate (up to 40% a month for standard cells). By doing this Sanyo reduced cell capacity down to 2000 mAh from today's top line of 2700 mAh.

Simple calculation shows that due to self-discharge a good 2700 mAh battery holds only around 2000 mAh after a month and a half.

So the answer to the question "which battery is better - Eneloop or standard NiMh" - lies in the usage pattern.

If you always keep batteries in your camera in top-notch charged condition, then standard 2700 mAh set is a winner. For occasional shooters who always forget to charge batteries (like me), Eneloop makes lot of sense because in three month I get around 1900 mAh out of Eneloop and only 1400 mAh from the standard cell. So Eneloop is a winner for everyone who keep batteries inside the camera or any other device for more than 6 weeks.

And, well, if paragraph above looks too technical with too many details and numbers - then Eneloop is a clear winner too, because it just behaves the way battery should behave - without forcing users to know how it works.

This observation made me buy additional sets of AAA Eneloops to use in my wireless mouse, keyboard, voice recorder and LCD flashlight. It should be taken into account that Eneloops are four times more expensive than Alkaline cells, so it is reasonable to use them for devices that require fresh batteries at least twice a year.
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75 of 79 people found the following review helpful By C. Stoneham on April 2, 2007
Verified Purchase
I was initially skeptical when I bought these but figured it couldn't hurt. I needed a set for my Nikon SB-600 flash. The 2700 mAh Energizers I had performed just fine until they sat in the flash for a month, at which point I had to carry a spare set "just in case". I charged the Eneloops, placed them in the flash and had my first call a month later. They worked wonderfully. I went the whole evening without needed spares. I used them again two months later and got a solid hour or two before they were exhausted. They easily lasted 2-3x as long as the Energizers and where in the flash for 2x as long. All-in-all, they've performaed very well. They may not maintain 85% of their charge after one year at room temp (as one reviewer suggested) but they certainly "sit in the bag" far better than my others. I am slowly phasing out all my non-Eneloops as a result...
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17 of 18 people found the following review helpful By SilverFoxCPF on February 6, 2007
A friend in Japan sent me some eneloop cells when they were first introduced. They tested out very close to their rated capacity of 2000 mAh. I then conducted some self discharge tests. I fully charged the cells and set them on a shelf in my house. I checked them at 30 days, 90 days, and 180 days.

After 6 months of room temperature storage they had 86% of their initial capacity.

Very impressive...
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21 of 25 people found the following review helpful By A. Wilson on January 10, 2008
Verified Purchase
Better than a regular (AA) alkaline battery, but Not better than some rechargeables on the market. (When?)
- I bought these Eneloops(2000 mAh) because of the reviews regarding slow discharge rates, and how rechargeables above 2500 mAh can lose power faster, etc.

What I know is that, this winter/under Limited sunlight, the eneloops operated strongly 4 nights (running about 12 hours Constant) in my solar strand led Lights, BUT my (Powerex (AA) 2700 mAh Rechargeable NiMH Batteries) by MAHA ran strong for 8 nights b/f diminishing for the same time frame, using the same light types(over the same week [simultaneously]). Yes, the Sanyos are better than alkalines = ability to be re-used, will save you money -over time, and perhaps better than a comparable (AA) size 2,000 mAh rechargeable. But I will not buy these over the 2,700 power by MAHA/ Powerex -- especially when the device is operated [continuously].

- illumination was also much better w/ the 2700s in the light strands. (for Maha batts- shop around/sale prices vary)

-eneloops arrived w/ some charge but not [fully] powered. They can be charged in any quality NiMH charger, although the package only mentions Sanyo chargers.
- An eneloop is simply a 2000 mAh rechargeable, when Ur mainly concerned about running a device in the "ON" mode continuously. It is when the battery is [Not] in use, does Low SELF-discharge (LSD) battery usefulness pay off.
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