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Panasonic BK-3MCCA16BA Eneloop AA 2100 Cycle Ni-MH Pre-Charged Rechargeable Batteries, 16 Pack

4.7 out of 5 stars 3,878 customer reviews
| 232 answered questions

Price: $37.89 & FREE Shipping on orders over $49. Details
In Stock.
Ships from and sold by Amazon.com. Gift-wrap available.
AA
16 -Pack
  • Recharge up to 2100 times
  • Maintain up to 70% of their charge after 10 years (when not it use)
  • 2000mAh type, 1900mAh min, Ni-MH pre-charged rechargeable battery
  • Pre-Charged at the factory using solar power and ready to use
  • No memory effect - batteries can be recharged when fully, or partially discharged
$37.89 & FREE Shipping on orders over $49. Details In Stock. Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

  • Panasonic BK-3MCCA16BA Eneloop AA 2100 Cycle Ni-MH Pre-Charged Rechargeable Batteries, 16 Pack
  • +
  • Panasonic K-KJ17MCA4BA Advanced Individual Cell Battery Charger Pack with 4AA eneloop 2100 Cycle Rechargeable Batteries (4 pack)
Total price: $54.88
Buy the selected items together


Technical Details

Style: AA | Size: 16 -Pack
  • Brand Name: Panasonic
  • Model Number: BK-3MCCA16BA
  • Battery Description: Nickel Metal Hydride
  • Battery Type: NiMh
  • Item Package Quantity: 1

Product Description

Style: AA | Size: 16 -Pack

INCREASED POWER FOR HIGH-DRAIN DEVICES RECHARGEABLE UP TO 2,100X PRECHARGED amp;amp; READY TO USE RETAINS 65% - 70% CAPACITY AFTER 5 YEARS NO MEMORY EFFECT CAN BE CHARGED WHEN PARTIALLY DRAINED FUNCTIONS DOWN TO 0C AA UP TO 2,000MAH 16 PK

Product Information

Style:AA  |  Size:16 -Pack
Product Dimensions 1.2 x 7.6 x 4.2 inches
Item Weight 15.2 ounces
Shipping Weight 15.2 ounces (View shipping rates and policies)
Department Electronics
Manufacturer SANYO
ASIN B00JHKSN4O
Domestic Shipping This item is also available for shipping to select countries outside the U.S.
International Shipping This item can be shipped to select countries outside of the U.S. Learn More
Item model number BK-3MCCA16BA
Batteries 16 Nonstandard Battery batteries required. (included)
Customer Reviews
4.7 out of 5 stars 3,878 customer reviews

4.7 out of 5 stars
Best Sellers Rank #32 in Electronics > Accessories & Supplies > Batteries, Chargers & Accessories > Household Batteries > AA
Date first available at Amazon.com April 11, 2014

Technical Specification

Warranty [pdf ]

Warranty & Support

Product Warranty: For warranty information about this product, please click here. [PDF ]

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From the Manufacturer

eneloop, Panasonic, battery, batteries, rechargeable, rechargeable batteries, AAA battery eneloop, Panasonic, battery, batteries, rechargeable, rechargeable batteries, AAA battery eneloop, Panasonic, battery, batteries, rechargeable, rechargeable batteries, AAA battery eneloop, Panasonic, battery, batteries, rechargeable, rechargeable batteries, AAA battery
eneloop AA eneloop AAA eneloop pro AA eneloop pro AAA
Capacity up to 2000mAh* up to 800mAh* up to 2550mAh* up to 950mAh*
Cycles / Recharges up to 2100 times** up to 2100 times** up to 500 times** up to 500 times**
Storage Life Hold 70% charge up to 10 years* Hold 70% charge up to 10 years* Holds 85% charge up to one year* Holds 85% charge up to one year*
Charged at the Factory Using Solar Power Yes Yes Yes Yes
Low Temp Rating Down to -4 degrees F Down to -4 degrees F Down to -4 degrees F Down to -4 degrees F
Chemistry LSD Ni-MH LSD Ni-MH LSD Ni-MH LSD Ni-MH
Recyclable Yes Yes Yes Yes
Country of Origin Made in Japan Made in Japan Made in Japan Made in Japan

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Style Name: AASize: 8-Pack
Lot's of confusion about "codes" so I put a chart up explaining the difference.

Standard Eneloop models:
1st Generation Eneloop model numbers and specs
AAA: HR-4UTG 1000cycles Rated 800mAh. Min. 750mAh
....AA: HR-3UTG 1000cycles Rated 2,000mAh. Min. 1,900mAh
.......C: HR-2UTG 1000cycles Rated 3,200mAh. Min. 3,000mAh
.......D: HR-1UTG 1000cycles Rated 6,000mAh. Min. 5,700mAh

2nd Generation Eneloop model numbers and specs
AAA: HR-4UTGA 1500cycles Rated 800mAh. Min. 750mAh
...AA: HR-3UTGA 1500cycles Rated 2,000mAh. Min. 1,900mAh

3rd Generation Eneloop model numbers and specs
AAA: HR-4UTGB 1800cycles Rated 800mAh. Min 750mAh
...AA: HR-3UTGB 1800cycles Rated 2,000mAh. Min 1,900mAh

4th Generation Eneloop model numbers and specs
AAA: BK-4MCC 2100cycels Min. 750mAh
...AA: BK-3MCC 2100cycels Min.1900mAh
......C: BK-2MGC 1000cycles Min.3000mAh
......D: BK-1MGC 1000cycles Min.5700mAh

1=D 2=C 3=AA 4=AAA

I just ordered these and got the 4th gen!!!!
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Style Name: AASize: 4-Pack Vine Customer Review of Free Product ( What's this? )
Summary: Eneloop are the gold standard in LSD Batteries, and they are now that much better...If you don't know what an LSD battery is, you should find out.

LSD= Low Self Discharge. Some companies call them "Pre-charged," but it's the same thing.

I've been a fan of rechargables since the 70's when my father had a bunch of GE Nicad cells which had capacity of perhaps 400 mAH. Nicads had so much more punch than alkaline batteries. For years and years I kept chasing the performance promise of higher capacity, 1200 mAH, 1400mAH, 1800mAH, 2100 mAH, 2300 mAH, 2500 mAH!!! 2650mAH!!!!!

Well, I ended up having all sorts of problems with the 2500 and 2650. It turns out that, besides a slightly larger diameter case which caused fit problems in some devices, they also had horrendous self- discharge. Easily half the charge was gone in a month, and in 2-3 months they were often dead.

After finding out about Eneloops (Sanyo Eneloop was the original LSD battery chemistry: Panasonic = Sanyo = Eneloop after Sanyo was bought out by Panasonic), I've phased over - perhaps 80% of my rechargeables are now LSD. The earlier LSD were 2000 mAH, as are these. These newer ones are good for 2100 cycles. Note that there is an alternate type of eneloop "XX" that give you 2500 mAH, but they are supposedly only good for 500 cycles. 500 cycles isn't bad though - even if you were to recharge them once a week you would still get 10 years...
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Style Name: AASize: 16-Pack
I've been using a variety of Ni–MH batteries for a while now but for sheer reliability and longevity the Eneloop ones are hard to fault. This is the 4th generation of the Eneloop range the first coming to the market in around 2005, over time the number of charges has increased from the original 1000 cycles up to a claimed 2100 as well as extending the charge they retain in storage for longer. Since Panasonic took over Sanyo in 2013 the they retain the Eneloop branding, this model is BK-3MCCE the prior generation is HR-3UTGB the cycles up from 1800 on that model.

It's easy to spot the newest model purely because they are Panasonic branded
The cells are quoted as retaining up to 70% of their capacity for 5 years and are ready to use out of the box

I tested the pack I got and the capacities ranged from 2020-2078 mAh this can vary a bit but you're guaranteed a minimum of 1900 mAh. Unlike some other makers you can be sure you'll get the quoted capacity Despite the higher cost per battery the longevity of the Eneloop batteries has been very good I've had sets for a good while now (over 5 years) and they're still going strong where as some budget offerings have lost their capacity or worn out after a few years. I've also never had a problem with the Eneloop cells fitting, in the past a few makers have played around the standard AA size and some are a bit longer or larger in diameter this can cause problems on some devices fitting wise.

On the packaging Panasonic recommend using their own chargers, but I've never had a problem with a good quality third party smart/intelligent charger with any make of battery it's well worth investing in one of these as it can extend the life of cells and avoid overcharging problems that some timer/manual chargers have.
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Style Name: AASize: 8-Pack Verified Purchase
Scroll down to the end if you would like to see the detailed info for the codes.

I have been using Eneloops (along with Powerex, Imedion and Energizers) for about 5 years now and I have good things to say about Eneloops for the most part. I use them mainly for my speedlites (Canon 600RT, Canon EX580ii, YN600RT, YNE3RT and so on) but you can use them for anything that uses an AA battery. These are NiMH which means they do have a discharge over time so my advice is to use these in places where there is a larger power consumption and needs recharge more frequently like in my case an external flash. You would probably not want to use it at places like a regular wall clock.

They have always performed quite well over the years although they do tend to develop "memory" in which you would need to fully discharge them once in a while and then have them fully charge.

Over the years, I have gathered around 7 sets (each set = 4 batteries) of Eneloops. I usually use my Maha chargers to discharge and charge them. I recently got a EBL charger that I will be testing out to see how well it works.

The name in this Amazon listing claims "2100mAh" but yet the actual packaging states "2000mAh" and the battery itself claims "1900mAh." So quite honestly, I do not know which is the most accurate of the three. It could very well be a marketing move to lured potential buyers.
They seem to hold their charge very well but when you do notice that the batteries are not doing so, that would usually mean you would need to discharge them first.

My tips for managing these sets of batteries is to label each set accordingly so when I charge them, I usually keep them charging in the same charger.
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