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	This Item eneloop XX 2500mAh Typical / 2400 mAh Minimum, High Capacity, 4 Pack AA Ni-MH Pre-Charged Rechargeable Batteries	Recommendations Eneloop Pro AA NiMH 2550mAh (Min. 2450mAh) Rechargeable Battery Pack of 2	dummy Eneloop Pro AA High Capacity Ni-MH 2550mAh (Min. 2450mAh) Pre-Charged Rechargeable Battery with Holder Pack of 8	dummy Panasonic BK-3HCCA4BA eneloop pro AA High-Capacity Ni-MH Pre-Charged Rechargeable Batteries, 4-Battery Pack	dummy Eneloop 70-ZP2A-6D26 AAA 4th generation NiMH Pre-Charged Rechargeable 2100 Cycles Battery with Holder Pack of 8
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Price	Currently unavailable.	$13.99	$40.39	-13% $21.79 List: $24.99	$24.19
Delivery	—	Get it as soon as Friday, Jun 14	Get it Jun 18 - 21	Get it as soon as Friday, Jun 14	Get it as soon as Friday, Jun 14
Customer Ratings	4.62,467	4.668	4.556	4.711,359	4.82,550
Remote Control	4.8	3.6	5.0	4.4	4.3
Longevity	4.4	4.2	4.4	4.3	4.4
Value for money	4.4	3.4	4.4	4.3	4.4
Battery life	3.6	—	—	4.6	3.5
Sold By	—	Amazon.com	INNOVATIONS-LLC	Amazon.com	Amazon.com
capacity	2500 milliamp hours	2550 milliamp hours	2550 milliamp hours	950 milliampere hour	750 milliamp hours
battery quantity	—	2 aa	8 aa	4 lithium ion, 4 aa, 4 product specific	8 aa, 8 aaa
voltage	1.2 volts	—	1.5 volts	1.2 volts	3 volts
reusability	Rechargeable	Rechargeable	Rechargeable	Rechargeable	Rechargeable
compatible devices	Solar	Solar	Solar	Solar	Solar

Product information

Product Dimensions

4.49 x 3.7 x 0.61 inches

Item Weight

4.6 ounces

ASIN

B0058GZWXQ

Item model number

HR-3UWXA4A

Customer Reviews

4.6 2,467 ratings

4.6 out of 5 stars

Best Sellers Rank

#261,816 in Health & Household (See Top 100 in Health & Household)
#832 in AA Batteries

Is Discontinued By Manufacturer

No

Date First Available

June 24, 2011

Manufacturer

Sanyo

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Product Description

The 4HR-3UWX 4-AA rechargeable battery pack utilizes SANYO's new, Double X (XX) battery Powered by eneloop which provides 2500mAh of performance for long lasting, high power capacity, extreme applications. XX batteries are the perfect choice for powering high current consuming devices such as photo strobe flash lights; providing more than twice the number of flashes per recharge in less than half the time as compared to conventional alkaline batteries!

From the Manufacturer

The 4HR-3UWX 4-AA rechargeable battery pack utilizes SANYO's new, Double X (XX) battery Powered by eneloop which provides 2500mAh of performance for long lasting, high power capacity, extreme applications. XX batteries are the perfect choice for powering high current consuming devices such as photo strobe flash lights; providing more than twice the number of flashes per recharge in less than half the time as compared to conventional alkaline batteries!

Customer reviews

4.6 out of 5

2,467 global ratings

How customer reviews and ratings work

Customers say

Customers like the quality, charging, performance, value, and capacity of the battery. They mention that it holds its charge for considerable use, it can be charged whenever, and that it performs great in the radio controller. They appreciate the case they came in and say it's convenient for storage.

AI-generated from the text of customer reviews

1,171 customers mention1,032 positive139 negative

Customers like the quality of the battery. They say it holds its charge for considerable use, and are the best rechargeable ones they've ever used. They also say the cells are among the very best NiMH batteries available. Customers are also pleased with the storage case build and the content is organised.

"...I feel confident in stating that they are at least resistant to deteriorating in hot conditions...." Read more

"...The case itself is super handy and eliminates the huge mess in my battery drawer...." Read more

"Wow, there are a lot of batteries in this pack. Eneloops are great batteries, especially if the only experience you've had with reusable batteries..." Read more

"...with them and they continue to charge well and hold their charge for considerable use (and non use)...." Read more

777 customers mention646 positive131 negative

Customers like the charging of the batteries. They say that the batteries take a charge great, and keep them great. They also say that they can be charged whenever, and that they last weeks before needing a recharge. Customers also mention that it charges AA and AAA batteries, and is easy to re-charge.

"...First off, the batteries came pre-charged and testing showed between 93 and 97% charge remaining on every single one...." Read more

"...Other than that the set is excellent. I think the 4 AAA is just right because we really don't have many things that take those anymore, and the 12..." Read more

"...One of the cool things about these batteries is that they have a slow discharge rate so you can charge them and use them months later with little..." Read more

"...than other brands but they last so many times longer and continue to provide full capacity that it just doesn't make sense to buy anything else...." Read more

552 customers mention500 positive52 negative

Customers are satisfied with the performance of the battery. They mention that it works great, can perform optimally, and has no problems. Some say that the batteries work great in all metal detectors and last about 5 hours more than OTC. Overall, most recommend the product.

"...Compare prices and you'll see that this combo gives you a very nice, sturdy case, an excellent compact charger and C/D battery adapters for..." Read more

"...My experience, however, was that the Eneloops stood up well to the heat. If I got less life out of a battery charge, it wasn't anything noticeable...." Read more

"...Other than that the set is excellent...." Read more

"...is a great buy for the newer version of the Sanyo Eneloop's - really nice product...." Read more

355 customers mention321 positive34 negative

Customers find the battery worth the extra price, saying it saves them a ton of money over buying disposable batteries. They also say the 8 pack is the best value, and a very wise investment compared to buying disposable.

"...Plus they save you a little bit of money.If you are buying reusable batteries for the first time, this is a great place to start." Read more

"...These are much cheaper in the long run...." Read more

"...Plus, it is an easy to do "green" thing.Well worth an investment, in my book...." Read more

"...Worth the extra price in my opinion.There is one problem which could be significant...." Read more

89 customers mention74 positive15 negative

Customers like the capacity of the batteries. They say that it doubles the storage capacity over using only one battery, and they don't have the memory problem of normal rechargeables. They also say that the case they came in is convenient for storage and pretty sturdy. Customers also say the batteries charge reliably, hold their voltage very well in storage, and that it contains the perfect number of each battery that they need.

"...The case holds everything snuggly and is a nice small size and easy to store. Great for keeping track of everything...." Read more

"...Smaller than a typical netbook or Kindle. Handy place to keep the charger and any extra cells...." Read more

"...They also don't have the memory problem of normal rechargeables and can be charged whenever without having to worry about if your ruining the..." Read more

"...Until now they have been the gold standard for capacity and reliability for many photographers...." Read more

59 customers mention56 positive3 negative

Customers find the battery easy to use. They mention that the instructions are clear and easy to understand. They also say that the product works without any instructions and that it is easy to find and organize.

"...The charger is small and unobtrusive, and charges pretty quickly...." Read more

"...Plus, it is an easy to do "green" thing.Well worth an investment, in my book...." Read more

"...And this is the 8 cell charger, very convenient if you are charging a lot of batteries.[..." Read more

"...The charger does exactly what it's meant to do with no trouble at all." Read more

46 customers mention32 positive14 negative

Customers are mixed about the leakage of the battery. Some mention that they have a low self-discharge rate and retain their charges at a level. Others say that they do not work as expected and will discharge if not used.

"...Like all Eneloops these are low self discharge, which means that unlike ordinary NiMH's, they will retain about 85% of their charge after one year,..." Read more

"...All worked fine. In fact, because of the Low Discharge property I can leave the batteries in the controllers and be confident that the next time I..." Read more

"...But these cells of NiMH also lost charge (self-discharge) fairly quickly, so that in a few months they were dead, and this was almost worse than..." Read more

"...A lot of that may be due to the fact that these are low-self-discharge, meaning that while alkaline batteries will drain slowly even when sitting in..." Read more

42 customers mention24 positive18 negative

Customers have mixed opinions about the size of the battery. Some mention that it fits in each device nicely, while others say that it may be a tight fit in some devices. The case holds everything snuggly and is a nice small size and easy to store. However, some customers say that the batteries do not fit securely in the device and sit kind of loose in the tray.

"...The case holds everything snuggly and is a nice small size and easy to store. Great for keeping track of everything...." Read more

"...There is one problem which could be significant. They are slightly larger in diameter than a standard AA alkaline battery...." Read more

"...I liked that this charger could handle both types of batteries whereas other chargers could only handle one or the other...." Read more

"...A potential issue with XX's is that they may be a tight fit in some devices, because like most other high capacity cells, they are sized close to..." Read more

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Y. R. Wu

Great Combo - basically free charger, adapters and case....

Reviewed in the United States on August 8, 2012

Verified Purchase

Low Self Discharge rechargeable batteries are the way to go. Compare prices and you'll see that this combo gives you a very nice, sturdy case, an excellent compact charger and C/D battery adapters for free.

Case is heavy duty plastic with a real (not a living) hinge and decent latches, while the charger plug flips in for excellent portability.

Why Low Self Discharge?

Brief history of rechargeable batteries: In the beginning there was NiCad and all was good, but people found that the cells of Nicad had memory and that was bad. So then there were the cells of NiMH which could store more power than Nicad and had no memory, and that was good.

But these cells of NiMH also lost charge (self-discharge) fairly quickly, so that in a few months they were dead, and this was almost worse than memory. Alas, the men were angry and the women lamenting "Why have the electrons of NiMH abandoned us?

Then the prophet Sanyo came and said "I have made a NiMH cell that has a very low self discharge and I will give it a name like no other. I will call it ENELOOP"

And all the people said "Huh?" for the name was goofy in addition to being like no other. But soon the land was filled with celebration as they found that these batteries would hold their charge for months, even as long as a year!

The latest Eneloops recharge 1500 times, the earlier, 1000. Assuming you charge them every other day, that's 5-1/2 years for the older ones, over 8 years for the "Eneloop 1500" Other people rebrand Eneloop as their own (Most of the Duracell "pre-charged" appear to be Eneloop) but I still prefer the original - especially as the price isn't that much less for the other brands.

If you have questions or comments, or if you found this review helpful, please let me know!

5 people found this helpful

Helpful

PlaysWithFire

Great performance even at extreme temperatures

Reviewed in the United States on July 17, 2012

Verified Purchase

Sometimes the engineering and manufacturing quality of a product is so good, you just have to marvel at it. Eneloop batteries deserve that sort of admiration.

Instead of reiterating all the positive testimonials and the great testing results from the battery geeks, I want to describe my experience with Eneloop batteries exposed to environmental extremes.

I drive for a living in New York, with multiple battery-operated devices in my car that I need on a daily basis. When I'm not working, the car is parked outside in the open. During a winter cold snap, temperatures can drop into the teens or even occasionally the single digits. In a summer heat wave, temperatures can approach or even exceed 100 F. With the sun beating down on it, this makes the inside of the car a brutal oven-like environment.

Of course it's better if my devices can just remain in the car and be ready for action when I start work, but I worried about how the Eneloops would be affected by the seasonal temperature extremes.

The detailed online literature from Sanyo indicates that Eneloop batteries are especially well-suited to working in cold temperatures. My experience confirms that they feel perfectly at home in the bitter cold, unlike alkaline batteries. My devices have always worked fine without needing to warm up, and there were no ill effects on the batteries whatsoever.

My bigger worry was about the summer. Heat can be the enemy of batteries, and there are no operating temperatures beyond 50 C (122 F) mentioned in the Sanyo literature. My experience, however, was that the Eneloops stood up well to the heat. If I got less life out of a battery charge, it wasn't anything noticeable. The self-discharge rate was theoretically higher, but it's still low even if the batteries get hot. This confirms some tests I read online by a user who compared Eneloops stored in a car under the Texas sun versus some charged at the same time and stored indoors. After several months, there wasn't a big difference between the performance of the two sets in a flashlight.

Apart from the self-discharge rate, one could question whether being in a hot car doesn't damage the batteries or shorten their life. While I can't definitively answer this, I feel confident in stating that they are at least resistant to deteriorating in hot conditions. The most challenging situation in my car was an Eneloop-powered LED light bar mounted at the top of my dashboard right by the windshield. Those batteries had to deal with the high temperature in the car during the day (I drive at night), plus the direct sunlight beating down through the glass. Eventually the power button on the device oozed and cracked until it no longer worked properly. I had to throw out the light, but the three AAA Eneloops looked none the worse for their ordeal. I tested them in my La Crosse BC-700 and their capacities came up as 792, 821, and 814 mAh at a 100 mAh discharge rate -- still performing up to spec.

Another application where the Eneloops work well in challenging temperature conditions is in my bicycle lights. My bike is stored in the garage and the lights are very important for making me visible to motorists. Summer or winter, they do their job powered by Eneloop batteries.

It's good to know that you can depend on Eneloops for both indoor and outdoor applications in a variety of climates. They work in pretty much all conditions and are suitable for just about any type of device. I use them in everything from remote controls to high-draw devices such as a tactical flashlight.

Let me just mention that battery charge indicators on electronic devices don't read correctly with NiMH batteries, including Eneloops. This can cause some confusion and the occasional complaint that the batteries run down quickly. They don't! What's important is how long they power the device, not what the battery indicator reads. Because the voltage curve of the Eneloops is very different from that of alkaline batteries, the battery charge indicator on your device will drop relatively quickly at first and then hover at a partial reading for most of the discharge cycle. This is normal. The device will still operate for a long time on one charge of the Eneloops.

I would give Eneloop batteries a 6-star rating if I could.

3 people found this helpful

Helpful

A Christy

Best for the Money for Gaming, Disaster Preps and General Use

Reviewed in the United States on October 1, 2012

Verified Purchase

I'm not a tech weenie. I don't want to have to study in order to buy the best product for my needs. And when I find the "right" thing I am sure to share my opinion so other non-tech-weenies can do the same. Here is my decidedly non-technical review.

My battery needs are varied and extensive. Aside from my beloved X-Box 360 Kinect (oh yes, middle aged women also love Mass Effect series), I've also got remote controls all over the house, mobile entertainment, dog toys, holiday decorations (you know, the creepy santa that moves), portable medical equipment for my mom who lives with me, security lights in the hallways, in house remote cameras...well, a LOT of battery needs. I also have my disaster preparations because I live in a zone known for Hurricanes AND Nor'easters. So much fun.

I was spending a fortune on batteries so I thought I'd try rechargables and I got the energizer recharging kind from the regular department store. They did okay, but I clearly had to recharge them more often and they weren't nearly as good as a set of fresh tossable kind. A friend noted my drawer full of batteries one day and told me that I should give this set a try.

At only $40, it was a no brainer to give it a try and I really can't believe the difference between this system and the energizer one I bought previously. Night and day.

First off, the batteries came pre-charged and testing showed between 93 and 97% charge remaining on every single one. That's pretty good considering it sat somewhere in an Amazon warehouse before I got it. And while I do use an Xbox controller recharge station, I'd rather not wait when I do get time to play something so I usually grab another controller that isn't rechargable and I used these first in that. Turns out, my controller lasted longer with these than the one that goes with the Xbox recharger...that's pretty darn good.

I've had batteries in things for over a month now and nothing has run out (save the Xbox controller), including the safety light in the upstairs hallway that goes on and off every time a person enters the hallway...a lot of use, in other words. The case itself is super handy and eliminates the huge mess in my battery drawer.

I'm also very comfortable with these due to their ability to hold a charge. Each year I have to clean out batteries for rotation in my hurricane/storm kit and it is such a waste. With these retaining their charge...and the additional ones I bought to flesh out the kit with more batteries...I can stop that practice and know I'll have batteries ready to go. I'll update if needed. Really great buy that is highly recommended.

6 people found this helpful

Helpful

Top reviews from other countries

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Ravi

Four Stars

Reviewed in India on February 3, 2017

Verified Purchase

Working Good as of now

brijesh gopinath

Great Product! Shipped in great condition and delivered well ...

Reviewed in India on May 2, 2015

Verified Purchase

Great Product ! Shipped in great condition and delivered well on time. Thanks !

Damien

Attention arnaque !

Reviewed in France on October 29, 2012

Verified Purchase

Attention le titre du produit ainsi que son tarif laissent penser qu'il s'agit de 4 packs de pile alors qu'il n'y a qu'un paquet !
Hors un paquet coûte en moyenne 15 euros...
A éviter !

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Amazon Customer

Five Stars

Reviewed in India on November 2, 2016

Verified Purchase

Very Good

scorfano73

Ottime per 30 cicli

Reviewed in Italy on December 29, 2014

Verified Purchase

Ho acquistato queste pile ricaricabili suggerite da un'amico e mi sono trovato molto bene inizialmente. Al momento ho fatto circa 30 cicli di carica/scarica (con apposito caricabatterie) e adesso non hanno più la prontezza che avevano prima. Specifico che le uso esclusivamente per il Flash a slitta della macchina fotografica e ci vogliono 2/3 secondi prima che si ricarichi, cosa che all'inizio non succedeva.
Per il resto vista la cifra mi ritengo soddisfatto anche se ogni stagione di matrimoni ne dovrò acquistare un set nuovo.

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Brand	SANYO
Battery Cell Composition	NiMH
Recommended Uses For Product	Gaming Controller
Unit Count	4.0 Count
Voltage	1.2 Volts

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