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Eneloop Panasonic BK-4MCCA8BA AAA 2100 Cycle Ni-MH Pre-Charged Rechargeable Batteries, 8-Battery Pack

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Amazon's Choice in AAA Batteries by Eneloop
$19.95 with 26 percent savings $2.49 per count
List Price: $26.99

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Purchase options and add-ons

Number of Batteries 8 AAA batteries required. (included)
Brand Eneloop
Battery Cell Composition NiMH
Compatible Phone Models flashlight
Recommended Uses For Product Camera, Toys, TV Remote, Gaming Controller, Radio, Flashlight, Mouse, Remote Control Vehicle, Wireless Keyboard, Phone See more

About this item

  • LONG LASTING PERFORMANCE: Recharge eneloop AAA rechargeable batteries up to 2100 times
  • POWERFUL NiMH RECHARGEABLE BATTERIES: eneloop AAA Ni-MH pre-charged rechargeable battery deliver up to 800mAh typical, 750mAh minimum
  • PRE-CHARGED AND READY TO USE: eneloop AAA rechargeable batteries are pre-charged at the factory using solar power and maintain up to 70% of their charge after 10 years (when not it use)
  • SECURE, PROTECTIVE PACKAGING: This package contains 8 eneloop AAA rechargeable batteries
  • EXTREME TEMPERATURES: eneloop rechargeable batteries can used in extreme temperatures, down to -4 deg F
  • QUALITY YOU CAN TRUST: These eneloop rechargeable AAA batteries are made in Japan and packaged in the United States
  • HUNDREDS OF HOUSEHOLD DEVICES: Perfect for use in hundreds of household devices, these eneloop AAA rechargeable batteries can be used in remote controls, flashlights, toys, wireless computer devices, rc cars, digital camera flash units, game controllers and more

Frequently bought together

Eneloop Panasonic BK-4MCCA8BA AAA 2100 Cycle Ni-MH Pre-Charged Rechargeable Batteries, 8-Battery Pack
This item: Eneloop Panasonic BK-4MCCA8BA AAA 2100 Cycle Ni-MH Pre-Charged Rechargeable Batteries, 8-Battery Pack
$19.95 ($2.49/count)
Get it as soon as Saturday, Aug 3
In Stock
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Eneloop Panasonic BK-3MCCA8BA AA 2100 Cycle Ni-MH Pre-Charged Rechargeable Batteries, 8-Battery Pack
Eneloop Panasonic BK-3MCCA8BA AA 2100 Cycle Ni-MH Pre-Charged Rechargeable Batteries, 8-Battery Pack
$24.48 ($3.06/Count)
Get it as soon as Saturday, Aug 3
In Stock
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Eneloop Panasonic BK-3MCCA4BA AA 2100 Cycle Ni-MH Pre-Charged Rechargeable Batteries, 4-Battery Pack
Eneloop Panasonic BK-3MCCA4BA AA 2100 Cycle Ni-MH Pre-Charged Rechargeable Batteries, 4-Battery Pack
$12.47 ($3.12/count)
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Customer reviews

4.8 out of 5 stars
23,221 global ratings

Customers say

Customers like the value, performance, durability, charging, and quality of the battery. For example, they mention that it's worth the price, works well in electronics, and holds a charge well. They say it lasts a lot longer between charges and that it charges quickly. Customers are also impressed with the quality, saying it'll recharge thousands of times.

AI-generated from the text of customer reviews

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QualityDurabilityPerformanceValueChargingLeakageEnvironmentally friendly
1,943 customers mention "Quality"1,572 positive371 negative

Customers like the quality of the battery. They say it's the best rechargeable battery on the market, and it holds its charge well. Some customers also mention that the batteries can take a few more charges and are durable.

"...lasting between charges and long lasting as in they have gone through many recharges and hold their charge well...." Read more

"...I just but this AAA in great condition and works amazing. I recommend 100%" Read more

"...They last a long time on one charge and recharge thousand's of times. Highly recommend them...." Read more

"Fills the purpose." Read more

1,032 customers mention "Durability"946 positive86 negative

Customers are satisfied with the durability of the battery. For example, they say it lasts a long time, holds up well against excessive use, and stays charged in storage for a while. Some mention that the remotes seem to last forever with these batteries.

"...Eneloops in particular seem to hold their charge well per recharge and over several cycles of charging...." Read more

"...very long but these Panasonic Eneloop are really great, long lasting between charges and long lasting as in they have gone through many recharges..." Read more

"...They last a long time on one charge and recharge thousand's of times. Highly recommend them...." Read more

"...The ones I originally still work well. They still hold a charge. They're pricey, but they last." Read more

884 customers mention "Performance"804 positive80 negative

Customers are satisfied with the performance of the battery. They say it works well in electronics and mechanical gadgets, it holds a charge well, and recharges very easily. Customers also mention that the batteries are powerful enough for devices like TV remotes, and provide solid consistent power through their entire charge.

"I've been using Eneloops for10 years, at least. All of them are still usable! Unbelievable longevity!..." Read more

"...I just but this AAA in great condition and works amazing. I recommend 100%" Read more

"...The ones I originally still work well. They still hold a charge. They're pricey, but they last." Read more

"...These work great in my remotes, thermostats and humidity gauges." Read more

782 customers mention "Value"701 positive81 negative

Customers like the value of the battery. For example, they say it's worth the price, the money savings has been immense, and it pays for itself soon enough. Customers also mention that it eliminates single-use batteries and that it'll never leak.

"...Anyway, highly recommend these, good for the planet too while saving money!" Read more

"...These re-chargeable have saved me a small fortune and they are MUCH better for the environment...." Read more

"...Definite value for your money." Read more

"...replaced my dozens of batteries with these Eneloops and they are worth the price...." Read more

402 customers mention "Charging"355 positive47 negative

Customers like the charging of the battery. They mention that it recharges quickly, is super easy, and holds its charge for quite a while. Some say that the batteries recharge overnight and can be recharged twice as many times as other batteries.

"...Charging was super easy, and I have not had any issues with them. Superior batteries...." Read more

"Great batteries. Easy to recharge. I can place them on a control remote or on a my front door lock. Tends to last about a month or so...." Read more

"...I have not had to toss any away, they charge quite rapidly, I use a panasonic charger...." Read more

"...They last a decent amount between charges and dont take too long to recharge." Read more

55 customers mention "Leakage"42 positive13 negative

Customers like the battery's design, saying it doesn't leak acid into devices. They also appreciate that it works great and there's no more leaking alkaline batteries to worry about.

"...The only advantage I can see for these is apparently they don't leak like alkaline batteries are notorious for doing and destroying the device they..." Read more

"...Extremely rare chances of leakage, compared to alkaline batteries: Leakage can cause great amounts of damage for the devices that these batteries..." Read more

"...No more spending money. Best part,THEY NEVER LEAK!!! My costco Duracell batteries leaked so much they ruined my electronics...." Read more

"...Regular batteries leak as well and we never have to worry about that with these" Read more

45 customers mention "Environmentally friendly"45 positive0 negative

Customers are happy with the environmentally friendly of the battery. They say it's better for the environment than wasteful alkalines, and makes the earth greener. They also say it saves money and causes less pollution.

"...Anyway, highly recommend these, good for the planet too while saving money!" Read more

"...re-chargeable have saved me a small fortune and they are MUCH better for the environment...." Read more

"...They hold a charge when not in use extremely well. They are environmentally friendly, and I recommend them." Read more

"...Great for the environment as they last for years!!" Read more

Reliable Rechargeable AAA Batteries... See Photos~
5 out of 5 stars
Reliable Rechargeable AAA Batteries... See Photos~
I bought these Panasonic AAA Rechargeable Batteries (BK-4MCCA8BA Eneloop 2100 Cycle Ni-MH Pre-Charged, Pack of 8) here for the second time. We purchased a set over a year ago that are still going strong and needed some more...This product is made in Japan. Delivered as pictured and described. We have a lot of devices and rechargeables are pricey but for us they are worth it, comparatively. Size-wise, these fit into our chargers and devices, as they should.Listed to hold 70% charge after up to 10 years of storage and recharge up to 2100 times. They do arrive pre-charged but since I've read that it helps them last longer, if you charge them fully prior to use, we do so.When I put them in our charger, it lights up yellow and doesn't turn green until full (so they're pre-charged but not all the way). I'll update this review should they not last long but having purchased these Eneloop batteries in the past, I'm anticipating these will do just fine.Excellent value for good batteries. Will purchase again and would recommend to others. Uploading a couple photos so you can get a closer look. Mine were a warehouse deal so the packaging is what it is (purchased new, yours will look better). Smile. Hope this helps.
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Top reviews from the United States

Sean
5.0 out of 5 stars Worth every penny!
Reviewed in the United States on July 21, 2024
Size: 1 Count (Pack of 1)Style: BatteriesVerified Purchase
The best batteries on the market! These run great, hold a charge for a long time (I've never seen them empty), and charge in a good time. Absolutely worth the money, they're the best batteries on the market.
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CGAsyk
5.0 out of 5 stars Excellent batteries!
Reviewed in the United States on May 27, 2024
Size: 8 Count (Pack of 1)Style: BatteriesVerified Purchase
I've been using Eneloops for10 years, at least. All of them are still usable! Unbelievable longevity! I'm sure I've saved hundreds maybe thousands of dollars over buying non-rechargeable ones in that time period given how much I use them. Eneloops in particular seem to hold their charge well per recharge and over several cycles of charging. Some of course are beginning to be less than 100% but still over 80% in my estimation. Anyway, highly recommend these, good for the planet too while saving money!
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JB
5.0 out of 5 stars Panasonic Makes Good Battery Products
Reviewed in the United States on April 7, 2024
Size: 8 Count (Pack of 1)Style: BatteriesVerified Purchase
I've had these Eneloop AAA batteries for a while now, they have gone through numerous cycles. I like to have plenty on hand as there are so many devices that need batteries and these rechargeable ones are the best I've found. I had issues with others in the past not lasting very long but these Panasonic Eneloop are really great, long lasting between charges and long lasting as in they have gone through many recharges and hold their charge well. I have them in all my remotes, and any other device that requires batteries. I usually go through the free batteries that come with a device, then switch to these Eneloops. I can't say enough about them, they have saved me a LOT of money. I used to by disposable batteries from the Big Box retailers in bulk, like 20 or 30 in a card. By the time I had used half of them some of the batteries would just leak and go bad. These re-chargeable have saved me a small fortune and they are MUCH better for the environment. All these batteries usually wind up on landfills, billions of batteries, even if you don't give these to a re-cycler, they won't fill up the land fill as fast with dirty chemicals.
These are cheap for the amount of times you can re-charge them. A great value
3 people found this helpful
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Pablo
5.0 out of 5 stars Great product
Reviewed in the United States on July 2, 2024
Size: 8 Count (Pack of 1)Style: BatteriesVerified Purchase
I like this battery brend. I have owned AA battery for almost 5 years and it’s still working like a king. I just but this AAA in great condition and works amazing. I recommend 100%
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Joao Henriques
4.0 out of 5 stars Good product.
Reviewed in the United States on February 22, 2024
Size: 8 Count (Pack of 1)Style: BatteriesVerified Purchase
Fills the purpose.
2 people found this helpful
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Jeremy Pena
5.0 out of 5 stars Love these!
Reviewed in the United States on July 12, 2024
Size: 8 Count (Pack of 1)Style: BatteriesVerified Purchase
These batteries last long though others may be higher capacity now. The real value with these comes from the amount of charges they can take. The first eneloops I’ve bought were in 2014 and they are still going strong.
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Crank
5.0 out of 5 stars Durable batteries for many use cases.
Reviewed in the United States on March 21, 2024
Size: 1 Count (Pack of 1)Style: BatteriesVerified Purchase
These ones can take a few more charges and in general are more durable. Charging was super easy, and I have not had any issues with them. Superior batteries. They don't have the longest charge, but they have better durability than some of the more expensive types. I usually get a few of both types for use in varied tech.
One person found this helpful
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Customer
5.0 out of 5 stars Works great (when used appropriately), capacity as advertised.
Reviewed in the United States on January 7, 2016
Size: 8 Count (Pack of 1)Style: BatteriesVerified Purchase
[this review is for the AAA 8 pack, although much of the information applies to other Eneloops.]

The batteries arrived packaged on a card as shown in the photo on this page. I confirmed these are the latest 4th generation Eneloop batteries as advertised. The date of manufacture is imprinted on every battery, and although difficult to see, I found this set was made 5 months prior to receipt.

With any low self discharge battery (LSD NiMH), one should perform an initial and periodic "conditioning" comprised of charging and discharging the cell 3-5 times in a charger that has this function (sometimes called "refresh") in order for the cells reach their maximum energy storage capacity. After conditioning the AAA batteries, all 8 exceeded 750mAh capacity (the advertised minimum), with values ranging from 762mAh to 778mAh. The very narrow range is an indicator of high quality and consistency in the manufacturing process.

What follows are general recommendations to get the most from Eneloop and other LSD NiMH rechargeables....
Get a good quality charger if you use Eneloops or other LSD NiMH batteries. Cheap chargers will significantly shorten the life of these high quality and somewhat expensive rechargeable batteries. The charger must be a microprocessor controlled "smart" charger that chargers each battery individually, not in pairs. I use a Titanium "smart fast" charger when bulk charging many batteries, and a Opus BT-C2000 when trying to get accurate measurements on capacity and internal resistance. These are there several others good quality chargers out there so be sure to read reviews from people who understand and discuss the technical aspects of battery chargers. That 15 year old old battery charger you have that came packaged along with some long since thrown away rechargeable batteries should not be used.

Not all devices are designed to work with rechargeable batteries. The nominal voltage of rechargable NiMH batteries, 1.2 volts, is less than the alkaline equivalent at 1.5 volts. Some devices work well with either one and some are only designed for the higher voltage alkaline. This not a problem with the battery, it is a problem with the way the device is designed. Unfortunately it's rare for a device manufacturer to mention how (or if) it works with rechargeable batteries so you will have to test it or read the experiences of others.

Devices that display the amount of power left in a battery will be inaccurate when using rechargeables and tend to indicate the batteries have less power than they really do. A device may show 2 out of 4 bars, when in fact the Eneloop might really be at 85% of charge.

Rechargeable batteries like Eneloops (LSD NiMH), store 20-35% less energy than a good quality alkaline of the same size. This is not a "problem" with the rechargeable battery, it is a characteristic of the chemistry and how the energy is stored. That means you can not expect them to last as long between charges as an alkaline before replacement in most applications. LSD NiMH batteries however do hold more energy and last longer than carbon zinc batteries aka "heavy duty" (these are the really cheap batteries you may see at the dollar store or come prepackaged with low end flashlights).

Rechargeable batteries should not be *over* discharged as it will damage them. Unfortunately it's hard to tell exactly when the ideal time is to recharge so it's better to stay on the safe side and recharge early when device performance starts degrading and not wait until it's completely dead. The best way to tell for certain is to test with a battery tester that measures voltage under load and recharge when the battery gets to about 1.1 volts Even some cheap battery testers can do this (look for BT-168D) or for a more expensive one the ZTS mini 9R. If all you have is a voltmeter, recharge when the open circuit voltage at rest is about 1.22v.

Rechargeable batteries should not be charged too quickly as the internal heat build up will damage them. For AAA NiMH, it should take 2-5 hours to charge fully depleted batteries. If your charger goes from empty to full in 30 minutes, it is either damaging or under charging the batteries.

Devices that automatically charge the batteries, such as cordless phones or cheap solar lights, are not a good candidate for Eneloops. These devices use "dumb" charging circuits and will likely overcharge the batteries shortening their life. For these types of batteries you are better off with cheap NiMH batteries that are not marketed as low self discharge (LSD).

Devices that use a very small amount of constant power, such as a battery powered clock, might be better off with an alkaline. An alkaline may only need to be replaced every 3 years in such applications, where as the rechargeable may need charging in less than a year due to higher self discharge rate and lower nominal voltage. You will need to test it to be sure and decide what makes the most sense.

Infrequently used low power devices such as a TV remote in a spare bedroom are usually better off with alkalines. A high quality alkaline may last 5 or more years, and the cost/benefit of an LSD NiMH just isn't there. Be cautious of low quality batteries this these sorts of applications as the battery may leak after a couple of years.

Eneloops (and LSD NiMH in general) are better than alkalines in high current applications. An Eneloop can move energy faster to the device than an alkaline. Examples where LSD NiMh out perform alkalines are modern photographic flashes, remote controlled cars/planes, certain high output flashlights.

Marking your batteries is a good idea, especially with you have many purchased at different times that all look the same. I mark mine by putting the year/month I purchased them, followed by a unique letter. When I first get them, I test their capacity and log it for future comparison. Even if you don't have the equipment to perform extensive testing, just knowing when you purchased each battery can be helpful down the road.

Properly managed, high quality LSD NiMH batteries like Eneloops will give a long life. Abused, they will not do any better than cheap NiMH batteries. Most of the complaints and bad reviews are from people who do not understand the limitations, use them in the wrong application, or who do not properly charge them. Correctly using rechargeable batteries takes some work and isn't for everyone, but if you can deal with their idiosyncrasies, they can save a lot of money in the long run.
109 people found this helpful
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Top reviews from other countries

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Paulo Porto de Melo
5.0 out of 5 stars Cumprem bem sua função
Reviewed in Brazil on July 21, 2024
Size: 1 Count (Pack of 24)Style: BatteriesVerified Purchase
Excelente opção para evitarmos de ficar comprando pilhas a torto e a direita. Recarregam rapidamente e duram bastante.
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Kleuber G.
5.0 out of 5 stars Gostei das pilhas
Reviewed in Brazil on May 12, 2024
Size: 12 Count (Pack of 1)Style: BatteriesVerified Purchase
Demonstram ser de qualidade
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D-jarabe
5.0 out of 5 stars Exelente
Reviewed in Mexico on January 3, 2024
Size: 8 Count (Pack of 1)Style: BatteriesVerified Purchase
Llevo unos 6 años usando esta marca, el cargador funciona genial y las pilas nunca me han decepcionado. Aún las que ya tiene estos años, no he notado una degradación, supongo que ya la tienen pero no la he percibido.
Mi uso principal sin un mouse y teclado, control remoto y los juguetes de mis pequeños
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Alonso
5.0 out of 5 stars Excelente producto y excelente presentación.
Reviewed in Mexico on July 26, 2023
Size: 1 Count (Pack of 24)Style: BatteriesVerified Purchase
Las baterías son excelentes tienen muy buen desempeño, no son chinas son japonesas (sin ofender pero la calidad entre uno y otro es notoria) y la presentación en cajita (sin blister de plástico ni cartón estorboso poco ecológicos) es muy práctica.
2 people found this helpful
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Mohamed Saied
5.0 out of 5 stars المنتج معروف
Reviewed in Saudi Arabia on July 23, 2024
Size: 1 Count (Pack of 1)Style: BatteriesVerified Purchase
المنتج معروف
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