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Panasonic BK-4MCCA4BA Eneloop AAA 2100 Cycle Ni-MH Pre-Charged Rechargeable Batteries, White - Pack of 4
Purchase options and add-ons
Number of batteries | 4 AAA batteries required. (included) |
Brand | Panasonic |
Battery cell composition | NiMH |
Compatible phone models | gaming consoles, high, battery powered toys |
Recommended uses for product | Gaming Controller |
About this item
- Increased power for high-drain devices
- Rechargeable up to 2, 100x
- Precharged and ready to use
- Recharge up to 2100 times
- Maintain up to 70-Percent of their charge after 10 years (when not it use)
- 800mAh type, 750mAh 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
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Product details
- Batteries : 4 AAA batteries required. (included)
- Is discontinued by manufacturer : No
- Product Dimensions : 1.12 x 8.59 x 10.8 cm; 52.16 Grams
- Date First Available : May 1 2014
- Manufacturer : Panasonic
- Place of Business : MISSISSAUGA, ON, L4W 2T3 CA
- ASIN : B00JHKSMJK
- Item model number : BK-4MCCA4BA
- Best Sellers Rank: #1,712 in Health & Personal Care (See Top 100 in Health & Personal Care)
- #16 in AA Batteries
- Customer Reviews:
From the manufacturer

Batteries can be recharged when fully, or partially drained.*eneloop charge capacity and mAh estimates based on Panasonic internal IEC 61951-2(7.3.2) testing.**Recharge cycles based on testing method established by IEC 61951-2(7.5.1.3).***Solar energy charging as certified by The Green Energy Certification Centre. eneloop batteries need a charger to be recharged. Panasonic Ni-MH battery chargers are recommended. ****Recommended storage conditions 68 degrees F. Results may vary based on conditions of storage and use.
eneloop
Ready to Use Ni-MH Rechargeable
eneloop Ni-MH 'Low Self Discharge' batteries utilize Panasonic’s advanced rechargeable cell technology allowing them to be recharged up to 2100 times.** These battery cells are ideal for all household products including flashlights, wireless gaming devices, digital camera flash units, and wireless mouse and keyboards.
- Recharge up to 2100 times**
- Maintain 70% charge for up to 10 years*
- Up to 2000mAh* (AA) / 800mAh* (AAA)
- Pre-charged using solar power***
- Temperature performance down to -20 C****
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eneloop 2100 cycle rechargeable Ni-MH batteries now maintain 70% of their charge for up to 10 years (when not in use and stored properly).* |
Improvements to the conductive surface layer of the active (positive) electrode material (made primarily from nickel-metal hydride) produce greater conductivity and durability. Limiting the degradation of the conductive layer increases the number of times that eneloop batteries can be recharged…up to 2100 times.** |
eneloop’s unique "Clean Energy Loop" initiative is a reality. All eneloop 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. |
Keep your tactical flashlights, walkie-talkie radios, battery powered lanterns, cameras and other devices powered in the winter. eneloop and eneloop pro batteries deliver exceptional performance at extreme low temperatures, down to –4°F.**** |
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Capacity | up to 2000 mAh | up to 800 mAh | up to 2550 mAh | up tp 950 mAh |
Cycles / Recharges | up to 2100 times | up to 2100 times | up to 500 times | up to 500 times |
Factory charged using solar | 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 Origina | Made in Japan | Made in Japan | Made in Japan | Made in Japan |
Product description
eneloop NiMH "Low Self Discharge" batteries utilize Panasonic advanced rechargeable battery technology, allowing them to be recharged up to 2,100 times.
This four-pack of AAA eneloop batteries deliver consistent power performance, maintain 70% of their charge for up to five years, come precharged by solar power (at the factory) and are ready to use out of the package. These 800mAh eneloop cells also have increased storage life and extreme temperature performance down to -4deg F.
Customer reviews

Reviewed in Canada on April 19, 2023
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Top reviews from Canada
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The 1.2 volt rating for NiMH cells still seems to concern people, and there are some very low current devices even today that don't like NiMH or even lithium AA cells, but those are very rare these days. Any device that has more than a tiny load current is going to end up seeing pretty much the same (or better) voltage from an NiMH cell than from an alkaline cell.
I use these in everything from hot-wired flashlights with 3-4 amp draw and 20-30 minute runtime to everyday electronic equipment that gets a recharge every year whether it needs it or not. In many cases I use these instead of alkalines simply because they very rarely leak, and when they do the leakage is not destructive like it is with alkalines.
Noticed that 12-pack was on sale while writing this so bought another dozen along with some C and D adapters. Eneloop AA's are no match for alkaline C and D cells at low current draws, but above 500 mA a good NiMH AA gets into C cell territory and above a 1A draw it's not a whole lot lower capacity than an alkaline D cell.
I'm not saying that these are the only good AA NiMH cells out there (I use EBL C and D NiMH cells) but these have been consistently good for over a decade and have only improved with time. More expensive but IMO worth it.
Well worth the money
Top reviews from other countries



Reviewed in the United States 🇺🇸 on August 25, 2018


They pay for themselves in less than a year and from then on you're making money.
They are just as powerful and longer lasting than the disposable kind.




Reviewed in India 🇮🇳 on September 13, 2018

