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

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List Price: $49.99
Price: $42.95 & FREE Shipping. Details
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AA 16 Pack
  • Recharge up to 2100 times
  • Maintain up to 70% of their charge after 5 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
35 new from $38.98 1 used from $40.39

Frequently Bought Together

Panasonic BK-3MCCA16BA eneloop AA New 2100 Cycle Ni-MH Pre-Charged Rechargeable Batteries, 16 Pack + Dial AA Battery Storage Box (B328FN)
Price for both: $47.94

Buy the selected items together

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Style: AA 16 Pack
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Technical Details

Style: AA 16 Pack
  • Brand Name: Panasonic
  • Model: BK-3MCCA16BA
  • Battery Type: NiMh
  • Item Package Quantity: 1

Product Details

Style: AA 16 Pack
  • Product Dimensions: 1.2 x 7.6 x 4.2 inches ; 15.2 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.
  • Item model number: BK-3MCCA16BA
  • Average Customer Review: 4.7 out of 5 stars  See all reviews (447 customer reviews)
  • Amazon Best Sellers Rank:
  • Date first available at Amazon.com: April 11, 2014

Product Description

Style: AA 16 Pack

eneloop 2100 Cycle Battery Cell
eneloop 2100 Cycle Ni-MH Pre-Charged Rechargeable Batteries

eneloop Ni-MH “Low Self Discharge” batteries utilize Panasonic’s advanced rechargeable battery technology allowing them to be recharged up to 2100 times**. eneloop battery cells deliver consistent power performance, maintain 70% of their charge for up to 5 years*, come pre-charged by solar power (at the factory)*** and are ready to use out of the package. These eneloop cells also have increased storage life and extreme temperature performance down to -4 degrees Fahrenheit. ****

eneloop. ..The Birth of a New Technology

Since 1931 Panasonic has been a leading manufacturer of battery technology. In 2005, eneloop was launched as a new type of rechargeable battery that would change the way people live, work and play. This rechargeable battery was created with a very simple idea in mind; provide a common energy source that can be reused over and over again. This “looping energy” became eneloop. Today, eneloop battery cells are recognized by millions of consumers worldwide as the industry’s premier rechargeable battery.

Key Features

eneloop Ni-MH 2000mAh typical /1900mAh minimum (AA)* 800mAh typical / 750mAh minimum (AAA)* Hold up to 70% of their charge after 5 years of non-use* Can be recharged up to 2100 times** Pre-charged at the factory using power generated from solar energy and ready to use right out of the package*** Work in extreme temperatures down to –4°F**** Batteries can be recharged when fully, or partially drained Ni-MH, "Low Self Discharge" rechargeable batteries * Based on IEC 61951-2(7.3.2). ** Battery life based on testing method established by IEC 61951-2( Results may vary based on conditions of use. *** As certified by The Green Energy Certification Center **** Storage at 20° (68F) ambient conditions (Discharge: . 2lt, E. V equals 1.0V) (varies according to conditions of use). eneloop batteries need a charger to be recharged. Panasonic Ni-MH battery charger recommended.

Maintains 70% Charge up to 5 Years (when not in use)
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Long Storage Life

eneloop 2100 cycle rechargeable Ni-MH batteries maintain 70% of their charge for up to 5 years* when not in use.

What Makes eneloop so Incredible

eneloop batteries utilize a highly-durable super lattice alloy which prolongs the life of this important material. Improvements to this super-lattice alloy have increased hydrogen stability resulting in reduced self-discharge and long lasting, stable voltage output.

Solar Panels at the Factory
Clean Energy from the Factory to Your Device

eneloop’s unique "Clean Energy Loop" initiative is a reality. All eneloop 2100 cycle and eneloop pro batteries are pre-charged at the factory in Japan using power generated from solar energy. This process is certified twice a year by the Green Energy Certification Center.

Improved Conductive Surface Layer

Improvements to the conductive surface layer of the active (positive) electrode material (made primarily from nickel-metal hydride) produce greater conductivity and durability. By limiting the degradation of the conductive layer, it has been possible to reduce performance degradation during repeated use and thus increase the number of times that eneloop batteries can be recharged – all without increasing the amount of negative electrode alloy used and enabling the new eneloop cells to be recharged up to 2100 times.

Consistently Stable Power

The initial voltage level of a battery provides no indication of how long the battery will last or how much power it can deliver. Alkaline battery cells rapidly drop below 1.5V soon after they are put into use and the voltage continues to steadily decline over time. Since alkaline cells are non-rechargeable, they must be discarded and then replaced. eneloop batteries deliver best-in-class Ni-MH high capacity power and “rechargeability” combination up to 2100 times. Devices including cameras flash units and wireless game controllers can easily draw more than 1000mA of current; rapidly depleting alkaline batteries power. eneloop batteries maintain a consistently high voltage level keeping your devices operating for a long period of time.

Works in Extreme Temperatures Down to -4 Degrees Fahrenheit
Performance Down to -4 Degrees Fahrenheit

Keep your tactical flashlights, walkie-talkie radios, battery powered lanterns, cameras and other devices powered in the winter. eneloop 2100 cycle and eneloop pro batteries deliver exceptional performance at extreme low temperatures, down to –4°F. ****

Customer Questions & Answers

Customer Reviews

Holds charge well and lasts a long time.
The real Amazon fan
Eneloops are, for my money, the best rechargeable batteries out there, much better than the other, more recognizable brand names.
Matthieu P. Raillard
I then tested the batteries and they were fully charged and ready to go!

Most Helpful Customer Reviews

Style Name: AA 4 Pack with Charger
I purchased the Panasonic K-KJ17MCA4BA package, which includes the BQ-CC17 "Advanced Individual Cell Charger", and four 4th-gen eneloop AA cells that are rated '2100 cycles'. For reason that will become apparent later, this review is focused on the charger.

I have been using eneloop batteries since the first-gen was introduced to the US market back in beginning of 2007. Over the past 7.5 years, I have tested 2nd-gen (1500 cycles), 3rd-gen (1800 cycles) and lately the 4th-gen (2100 cycles) eneloop cells. I have no complaints about the quality of eneloop cells. But I'm always unsatisfied with the charger bundled with most eneloop packages.
- The MQN05 (bundled with initial eneloop packages back in early 2007) can recharge individual cells. But it is only rated for 120V AC input. There is just one indicator light, which goes off when all cells are fully charged.
- The MQN06 (bundled with most eneloop cells sold between late 2007 and beginning of 2014) can only charge in pairs. I call it 'semi-smart' at best.
- The MQR06 (introduced to US market in 2012) is faster, handles individual cells and accepts 100-240V AC input. But it is a lot more expensive.
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117 of 129 people found the following review helpful By Y. R. Wu TOP 50 REVIEWERVINE VOICE on June 27, 2014
Style Name: AA 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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62 of 80 people found the following review helpful By usability on May 22, 2014
Style Name: Advanced Charger Verified Purchase
*** Updated 22nd June 2014 (scroll down to bottom of review)

Panasonic bought Sanyo a while ago and they have taken control of their fantastic eneloop rechargeable products. Though this charger is not branded eneloop it does show the word ADVANCED on the charger. Tempting...

I was always frustrated with Sanyo's most common (cheaper, bundled) 4xAA battery chargers since they require charging batteries in pairs of 2 or 4 cells at a time (though not all the chargers they offer insist on charging in pairs). This charger allows any combination of AA and AAA to be charged since each cell is treated individually. I'm excited to see this change at this price point and in a 4xAA / AAA model.

Users from countries outside the USA (and those who like to travel overseas with their rechargeables) will be happy to know this charger can run with world voltages, so all you need to plug in is a cheap travel adapter. The back of the unit has a flip-out US-style plug. No removable "figure 8" cable (or similar) is provided. The unit plugs into the power point.

The charge rate seems to be the same as my old NC-MQN06U
300mA for AA (~7 hours for fully depleted standard AA eneloop)
150mA for AAA (~6 hours for fully depleted standard AAA eneloop)

These are very safe charge rates and probably mean better longevity for your batteries. Fans of faster charging (and more heat generation) should look elsewhere. If the charge rate were too slow the charger probably won't detect peak voltage well. So this is good.

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