Panasonic BK-4MCCA8BA eneloop AAA 2100 Cycle Ni-MH Pre-Charged Rechargeable Batteries, 8-Battery Pack
Condition: New
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Availability:
In Stock.
Arrives
Tuesday, Nov 17
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At a glance
- Condition
- New
- Size
- 8 Count (Pack of 1)
- Style
- Batteries
- Model
- BK-4MCCA8BA
- Dimensions
- 0.84 x 3.38 x 4.25 in
- Weight
- 0.144 oz
- Number of Batteries
- 4 AA batteries required. (included)
Features 7
- 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
Specs 12
| Number of Batteries | 4 AA batteries required. (included) |
|---|---|
| Brand | Eneloop |
| Battery Cell Composition | NiMH |
| Recommended Uses For Product | Camera, Toys, TV Remote, Gaming Controller, Radio, Flashlight, Mouse, Remote Control Vehicle, Wireless Keyboard, Phone |
| Unit Count | 8.0 Count |
| Product Dimensions | 0.84 x 3.38 x 4.25 inches |
| Item Weight | 0.144 ounces |
| Item model number | BK-4MCCA8BA |
| Batteries | 4 AA batteries required. (included) |
| Department | Unisex-Adult |
| Manufacturer | Sanyo |
| Country of Origin | USA |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Nov 17
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Rechargeable must have!
Size: 1 Count (Pack of 1)
Style: Batteries
I originally purchased the Eneloop brand back in 2008 when they were branded Sanyo. Over the years I have had normal rechargeable batteries lose charge and die within 4-5 years, but these, now Panasonic branded Eneloops have lasted me close to 14 years, which is amazing. Out of the 12 batteries from 2008 four of them are still in service today (albeit they don't last as long). I use them mainly in my XBox and Nintendo controllers, but have placed them in high demand applications and they are as good as anything I have tried (short of lithium). I don't know what special blend of herbs and spices :) go into these Eneloops, but I would, and have, recommend these to anybody who wants fantastic rechargeable batteries, you simply cant go wrong.
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Reviewed in the United States on September 27, 2023 by Andy Weiss
7 Years In
Size: 1 Count (Pack of 12)
Style: Batteries
I first bought 24 of these 7 years ago and only had 3 go bad so far. I use them for all the remotes in the house and head lamp and flashlights at work among other things. One went bad a few years in. Just unlucky with that one I guess. My smart charger refused to charge 2 more a month ago. I decided to check my purchases and see how long I had had them. Incredible value for the money.
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Reviewed in the United States on October 7, 2023 by Leah
I probably own 100 of these batteries and they are great
Size: 8 Count (Pack of 1)
Style: Batteries
It seems like we have more and more devices that require batteries around the house and it seemed so wasteful getting single use batteries. I bought a good charger that can charge 8 AAA or AA batteries at a time and I alway have some on hand for those times when a batteriy dies or we get a new device.. Early on I tried some cheap no name rechargeable and I found out they did not last long and often they would not recharge after a few uses.. When the a red light flashes on the charger that battery is done..... I have discovered that these batteries are the best you can buy... Yes they are more expensive but in the long run they are cheaper... Yes one fails once in a while but not often..
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Reviewed in the United States on September 7, 2023 by Tom in Phoenix
Best rated for a reason
Size: 1 Count (Pack of 1)
Style: Batteries
Yes, these are the best recharging batteries that are readily available to buy. My oldest ones are close to a decade old and still chugging along. Sure, if your lifestyle is to charge up dozens of batteries all the time for endless uses, then the less expensive brands will probably do fine. But if you're like me, and you want a product that won't soon have to be replaced, that charges reliably and keeps your devices running as well as the copper tops of olden days, then Eneloop is the brand to go for. My benchmark is not a tv remote but my wireless keyboard. It runs for 4 months on 2 Eneloop AAAs and I'm on my computer 10 hours a day. They won't conk out on you.
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Reviewed in the United States on September 10, 2023 by CeeCeeGravy
Works great (when used appropriately), capacity as advertised.
Size: 8 Count (Pack of 1)
Style: Batteries
[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.
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Reviewed in the United States on January 7, 2016 by ZEric
Love these batteries
Size: 1 Count (Pack of 12)
Style: Batteries
I have been using these brand of batteries for over 10 years. I still have my my original 10 year old ones and they work perfectly fine! Quality is great. Only downside they take about 8 hrs to fully charge but that's it. No more spending money. Best part,THEY NEVER LEAK!!! My costco Duracell batteries leaked so much they ruined my electronics. These are a good value and a great purchase!
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Reviewed in the United States on September 25, 2023 by Nick Th
They work well
Size: 8 Count (Pack of 1)
Style: Batteries
We have used eneloop rechargable batteries for years, and they do the job! I bought more because, not because ours have worn out, but because we have more devices using batteries now (mostly headlamps and lights). These eneloop batteries are much less expensive in the long run. Plus it is less wasteful to be recharging and reusing—rather than using-and-tossing.
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Reviewed in the United States on September 30, 2023 by B. Deal
Best Batteries
Size: 1 Count (Pack of 1)
Style: Batteries
Great set of rechargeable batteries. I picked up a whole set of these with the adapters and whatnot at Costco a while ago and needed a few more AAAs for remotes and whatnot. These things last so long. In remotes specifically, I hardly ever have to change batteries out and they seem to just hold their charge for the longest time too if not in use. I can't seem myself every swapping brands, these are just too great for what they are.
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Reviewed in the United States on September 15, 2023 by R