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Sanyo Eneloop XX AA NiMH 2500mAh Rechargeable Battery, 4 Pack

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About Sanyo AA

The 4HR-3UWX 4-AA rechargeable battery pack utilizes SANYO's Double X (XX) battery Powered by eneloop which provides 2500mAh of performance for long lasting, high power capacity, extreme applications. XX battery is a perfect choice for powering high current consuming devices such as photo strobe flash lights; providing more than twice the number of flashes per recharge in less than half the time as compared to conventional alkaline batteries! Wireless keyboards, mice, game controllers, radio controlled toys and a range of household devices can all realize extended performance when powered by XX batteries.

SANYO's engineers developed the XX batteries to excel in extreme conditions where high power performance in very low temperature environments (down to -4 degrees Fahrenheit) is needed. The new XX Nickel Metal Hydride batteries retain up to 75% of their capacity even after one year of storage. Unlike regular alkaline batteries which can only be used once and are wasteful to the environment, the XX batteries can be recharged up to 500 times. They come pre-charged and can be used immediately out of the pack. XX Powered by eneloop batteries deliver reliable, high power battery performance when and where you need it most!

The Sanyo AA is commonly used for Everyday, Home, Macro photography, Portraits, Studio, Travel and more.The Sanyo AA is most used by customers who consider themselves to be a Professional among others.The Sanyo AA is popular because customers like the following qualities of the Sanyo AA: Durable, Easy to use and Reliable

Sanyo AA Features

  • Pre-charged and ready for immediate use
  • Can be recharged up to 500 times
  • Batteries maintain 75% of charge after 1 year of non-use
  • Provide high performance in sub-zero temperatures to -4 degrees Fahrenheit
  • No memory effect; a full charge every time
  • Combines the best features of AA alkaline (ready for use) and rechargeable (reusable) batteries
  • Perfect for use in powering high current devices such as photo strobe flash lights

Sanyo AA Specifications

Battery Type
Nickel-Metal Hydride Battery
Battery Size
AA consumer Type
Capacity Typical
Capacity Minimum
Nominal voltage
Charge current x Time
(Fast charge) 2500mA x approx. 1.1h
Medium-to-high power consumption device
Ambient Temperature Charge
(Fast charge) 0 Deg. - 40 Deg. C
Ambient Temperature Discharge
0 Deg. - 50 Deg. C
Ambient Temperature within 90 days
-20 Deg. - 40 Deg. C
Ambient Temperature within 1 year
-20 Deg. - 30 Deg. C
Internal Impedance
25m Ohm (at 1KHz) (after discharge to E.V. = 1.0V)
Size (Diameter x Height)
14.50 x 50.4 mm / 0.57 x 1.98 inches
30 g / 1.05 oz
Mfr #

Sanyo AA Reviews Powered by TurnTo®

Review Snapshot®


(based on 120 reviews)


of respondents would recommend this to a friend.

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Most Liked Positive Review


WoW It's Purple With Two X's!!!

I don't see how much better we can get than Purple Cells. Remember, it isn't a battery until it's permanently configured with two or more cells in series or parallel. So anyway these "Cells" as I mentioned are purple, Heavy and Packed with Juice (doping allegations unfounded pending further testing) I've been able to throw out a good burst before slowing down. And even then a bit rest in between leaves it roaring for more. I used them on an SB-600 Flash Unit at full power 90% of the time.

Reviewed by 120 customers


It is as advertised


I can't really tell if these have more peak power than the standard Sanyos, but they haven't disappointed yet.




I have tried many otrher battery brands and eneloop are the best


Great value!


Great recycling time


Excellent batteries


have used Eneloops for quite some time with no issues at all. Great batteries that hold their charge better than some other brands.


So Far So Good


These were charged out of the box and ready to use. I'm using them in my Canon 580EX II's and I've only had them out twice so far, but they seem to work just fine. Recycle time seems to be just as good if not better than regular Alkyne AA batteries.




They keep charged long time


Great alkaline replacement


At first I was skeptical that a rechargeable battery could replace the alkalines I use in my equipment, especially with manufacturers warning that rechargeable will perform so badly. However, these batteries work. My primary use for these is with my Tascam DR-40. I could easily burn through three dozen alkalines in a weekend. I've run some simple tests using my DR-40 and the rechargeables last as long or longer than the equivalent alkalines. I also recommend the Maha PowerEx MH-C801D for recharging these batteries.


Might out last me


Haven't had these that long and so I'm still breaking them in. They seem to be doing all that they should be doing.. Have placed these in some night lights in the house and then charging in the morning. If they live up to the 1500 recycles that had been said they may outlive me. I would buy them again and may do so in the future


Great batteies


These are the best rechargeable batteries I have ever used. Hold a charge for a long time and seem to discharge at a longer rate.




Very fast cylce times SB800


Questions & Answers Powered by TurnTo®

Questions about this item:

Shopper  Where do I get the charger?
ROBERT C  I don't know about the charger. I used these batteries to replace some older rechargeable batteries in my Logitech Harmony Universal Remote. It charges the batteries using a USB cable.
Tammie J  Can I use a regular rechargeable battery charger? or do I need a spaecial one?
BRYAN H  I use the regular sanyo eneloop charger (4 AA battery capacity white charger) and it works fine.
Tammie J  Can I use a regular rechargeable battery charger? or do I need a spaecial one?
BRYAN H  I use the regular sanyo eneloop charger (4 AA battery capacity white charger) and it works fine.
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