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eneloop AA 2100 cycle, Ni-MH Pre-Charged Rechargeable Batteries, 4 Pack

4.6 out of 5 stars 8,648 ratings

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4 pack AA Size Chart
Brand Eneloop
Voltage 1.2 Volts
Item Dimensions LxWxH 0.58 x 3.75 x 4.5 inches
Item Weight 0.2 Pounds
Battery Cell Type NiMH

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  • 2000mAh typ, 1900mAh min, Ni-MH pre-charged rechargeable battery
  • Recharge up to 1500 times
  • Maintain up to 70% of their charge after 5 years (when not it use)
  • Work in extreme temperatures down to –4°F
  • No memory effect - batteries can be recharged when fully, or partially drained
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Battery Cell Composition NiMH NiMH NiMH NiMH Alkaline NiMH
Size 4 pack AA 8-Pack 4-Pack 4-Pack AAA 12 Pack

Product description

Size:4 pack AA

Product Description

Rechargeable Up To 1,500X; Low Self Discharge-Batteries Maintain 75% Charge After 3 Years Of Non-Use; Pre Charged & Ready To Use; 2,000 Mah; No Memory Effect; Aa; 4 Pack

From the Manufacturer

The new SEC-HR3U4BPN 4-AA eneloop battery pack utilizes SANYO뭩 advanced rechargeable battery technology allowing them to be recharged up to 1500 times, 33% more than any eneloop battery!

They deliver excellent power performance. They come pre-charged and can be used immediately out of the package. These eneloop cells also have increased storage life and better extreme temperature performance than the original eneloop batteries.

  • SANYO eneloop 2,000 mAh, improved low self discharge rechargeable AA batteries
  • Maintain 75 percent of their charge after 3 years of storage
  • Can be recharged up to 1,500 times
  • Pre-charged and ready to use right out of the package
  • Work in extreme temperatures down to ?캟
  • Provide long lasting power at a cost of only 4¢ per recharge
  • Pre-Charged using power generated from solar energy
  • No memory effect – batteries can be recharged when fully, or partially drained


Incredibly Long Storage Life

SANYO 1500 cycle rechargeable eneloop Ni-MH batteries maintain up to 75% of their charge after three years of storage compared to conventional rechargeable batteries which often have 0% charge after only 2 years of non-use.

Keeps devices powered in extremely cold weather


Keep your portable players, cameras, flashlights and other devices powered in th e winter. eneloop 1500 cycle and XX batteries deliver exceptional performance at extreme low temperatures, down to ?캟.


SANYO’s "Clean Energy Loop" initiative has become a reality. All eneloop 1500 cycle and XX batteries are charged at the factory in Japan using power generated from solar energy.

Genuine SANYO eneloop battery packages


eneloop꿂onsistently High Voltage Level
eneloop maintains consistently High Voltage Leve

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. SANYO’s eneloop batteries deliver best-in-class Ni-MH high capacity power and are rechargeable up to 1500 times. Devices like cameras flash units and wireless game controllers can easily draw more than 1000mA of current; rapidly depleting alkaline batteries.

eneloop batteries maintain a consistently high voltage level keeping your devices operating for a longer period of time. When you use eneloop Ni-MH rechargeable batteries, you will realize that “1.2V” can indeed be better than “1.5V”.


Why are alkaline batteries 1.5v?

Regular disposable AA and AAA batteries are considered Primary Cells, and are most widely recognized as conventional “alkaline” batteries. There are two electrodes inside each cell; one is made of Zinc, known as the anode (the negative terminal) and the other is made of Manganese Dioxide, known as the cathode (the positive terminal). The electrodes are surrounded by an alkaline electrolyte, the chemical from which alkaline batteries get their name.

Battery chemistry of an alkaline battery generates 1.5V. As the chemical reaction fades, so does the power of the alkaline battery cell. This is why the voltage from alkaline batteries drops off shortly after the battery is put into use and the power continues to fade over time.


 NI-MH rechargeable battery

Ni-MH rechargeable batteries have two electrodes inside the cell: Nickel and Mercury Hydride. Battery chemistry of an Ni-MH rechargeable battery generates 1.2V. While alkaline batteries experience rapid drops in voltage Ni-MH rechargeable batteries maintain the same voltage throughout most of the entire charge.

The chemical makeup of Ni-MH batteries eliminates the “memory effect”, which means the cells can be recharged at any time without having to be fully discharged.

eneloop batteries have continued to raise the performance bar in Ni-MH rechargeable technology. eneloop has increased “low self discharge” performance on Ni- MH rechargeable batteries which allows eneloop cells to store power for longer periods of time.


What makes eneloop the best rechargeable battery?

The new SANYO eneloop battery incorporates a highly-durable super-lattice alloy which lessens the deterioration of this important alloy material. This super-lattice alloy increases the electrical capacity of the battery chemistry through lower internal resistance and delivers a long lasting, stable voltage output.

A new strong, thin outer case has also been added to the eneloop battery design in order to improve the internal cell space efficiency. The new case optimizes the balance of the components and when combined with other improvements have led to an increase in the number of times that eneloop batteries can be recharged.


Wireless game controllers incorporate power-hungry features such as built-in speakers, gyroscopes and motion sensors. Consider the hidden cost of ownership in operating two wireless game controllers.

Let뭩 make the following assumptions:
  1. You play video games one hour per day or 365 hours per year, using two remote/wireless controllers.
  2. A pair of batteries (either alkaline or eneloop) will provide you with roughly 20 hours of game-play usage time.
  3. In the first year, you will need 18.25 pairs of batteries per controller (either new alkaline or recharged eneloops).
  4. You will consume 73 alkaline battery cells in one year (for two controllers) compared to only 4 eneloop cells which can be recharged 1500 times ($0.04 per cell).
  5. Four AA Alkaline batteries will cost roughly $5.49 MSRP.
  6. Four AA eneloop batteries with an AC charger will cost $21.99 MSRP.

Now let’s look at the annual cost of ownership in only the first few years and then extend it out to ten years (at that point, you probably won’t be playing on the same game system). It is quite obvious that eneloop more than pays for itself in just the first year of ownership!

Year 1
Year 2
Year 3
Year 4
Year 5
Year 10
10 Year Total
eneloop 1500 cycle
$24.75 Includes Charger
Alkaline Batteries
*Usage assumptions & cost calculations listed below.
Dependable for many devices


eneloop batteries deliver dependable power allowing you to maximize your music, gaming, computer, photography and other experiences. eneloop batteries can be used to power these and many more devices.


The new 1500 cycle eneloop delivers four important new features
  1. 500 extra charging cycles - The new eneloop is rechargeable up to 1500 times
  2. 33% improved low self-discharge - The new 1500 cycle battery maintains 75% of its charge for up to 3 years when not in use. The original version maintained 75% of its charge for up to 2 years when not in use.
  3. Improved low temperature performance - The new 1500 cycle battery can be used in environments down to -4 degrees F. The original eneloop can be used in temperatures as low as 14 degrees F.
  4. Each battery cell is pre-charged using solar energy when it leaves the factory in Japan.
Genuine SANYO eneloop Batteries

SANYO has three authentic 뱒tyles?of packaging: 1. The 1500 cycle batteries which are in a blue/green cardboard blister design with a earth image screened on the package. 2. The 1000 cycle batteries are in a blue and orange cardboard blister pack. 3. The eneloop XX batteries are in a black cardboard blister package. Products sold in plastic bags or flexible foil style packages are not authorized for sale by SANYO in the U.S. and may not contain authentic SANYO batteries.

How to tell the difference between the 뱊ew 1500" and the 뱋riginal 1000?eneloop batteries
Genuine eneloop 1500 and 1000 packages

It is easy to distinguish between the 1500 and 1000 cycle eneloop batteries. The 1500 battery has a gray top (in the Green/Blue package pictured) and the 1000 (in the Blue/Orange package pictured) has a white top.

eneloop Battery Specifications
Product Name
eneloop 1000 cycle rechargeable battery
"1500 Cycle"
eneloop 1500 cycle rechargeable battery
"1000 Cycle"
XX rechargeable battery powered by eneloop
eneloop XX
Ni-MH rechargeable battery
Ni-MH rechargeable battery
Ni-MH rechargeable battery
high power consumption devices
Recharges / Discharging Cycles
up to 1500
up to 1000
up to 500
Low self-discharge / Storage Capacity
Maintains 75% of its charge after 3 years of non-use
Maintains 75% of its charge after 2 years of non-use
Maintains 75% of its charge after 1 year of non-use
Low Temperature Capacity
-4 degrees F
+14 degrees F
-4 degrees F
Model number
(4 Pack)
(4 Pack)
(4 Pack)
(4 Pack)
(8 Pack)
(8 Pack)
(16 Pack)
1.2 V
1.2 V
1.2 V
1.2 V
1.2 V
Typ. Capacity
2000 mAh
800 mAh
2000 mAh
800 mAh
2500 mAh
Min. Capacity
1900 mAh
750 mAh
1900 mAh
750 mAh
2400 mAh


For more than 35 years, SANYO has been a leading manufacturer of battery technology. In 2005 SANYO set out to develop a new type of rechargeable battery that would literally change the way people live, work and play. The result was eneloop, a rechargeable battery created with a very simple idea in mind: provide a common energy source that can be reused over and over again. This 뱇ooping energy?became eneloop. Today, eneloop battery cells are recognized by millions of consumers worldwide as the industry뭩 premier rechargeable battery.

The Birth of eneloop technology

eneloop’s “signature features” include ready to use rechargeable power with the ability to maintain 75% of their charge for up to 3 years (when not in use), can be recharged up to 1500 times, they have no “memory effect” and outstanding performance even in extremely low temperatures (down to -4 degrees F).

Americans deposit 8 billion disposable batteries into landfills each year! eneloop batteries can be recharged up to 1,500 times, which means that the purchase and use of a single eneloop cell can keep many hundreds of batteries from entering landfills! They can also be recycled free of charge at any of the 50,000+ Rechargeable Battery Recycling Corporation (RBRC) recycling centers near you.

*Usage Assumptions

Two Wii® remote controls
1 hour usage per remote, per day, per year
*20 hour avg. battery life per remote
$5.49 MSRP - 4 pack AA akaline
$21.99 MSRP - eneloop 4 pack AA + charger
©Wii® is a registered trademark of Nintendo

eneloop Recharge Cost Assumptions and Calculations
0.144 Kilowatts @ 8 hours per 4 batteries
4 AA --- 1,500 recharges each
1,500 cycles x 8 hours each = 12,000 hours of AC power
0.144 KW x 12,000 hours = 1,728 KWH
1,728 KWH x $0.12 = $207.36
Initial product cost = $21.99 (4AA eneloop + 4 position charger)
Total cost of product and recharging = ($207.36 + $21.99) = $229.35
Total number of recharge cycles = (4 batteries x 1,500 each) = 6,000 recharges
Cost of recharge = ($229.35/6,000) = $0.038 (3.8?PER RECHARGE)
NOTE: Cost of electricity is based on 2010 national US average energy costs @ $0.12 per KWH

Product information

Size:4 pack AA


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