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| Powerex AA 2700mAh NiMH Rechargeable Batteries w/holder- 4 Batteries Per Pack | 
 enlarge | Brand: Powerex
Category: CE
List Price: $16.95
Buy New: $11.99
You Save: $4.96 (29%)
Buy New from $11.99
Avg. Customer Rating:  (18 reviews)
Media: Electronics
Autographed: No
Memorabilia: No
MPN: MH-4AA270-BH
Model: MH-4AA270-BH
UPC: 802366141539
EAN: 0802366141539
ASIN: B0009H5VVM
Availability: Usually ships in 1-2 business days
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| Features:
| • | PowerEx Ultra high capacity AA batteries offer a super long run time! That's atleast 30-40% more than most competitors! Plus our batteries can be charged up to 1000 times. | | • | PowerEx batteries are manufactured to Industrial standards for the consumer market and last up to twice as long as ordinary rechargeable batteries. | | • | Includes a free battery carrying case. | | • | Memory free operation means you can charge PowerEX batteries anytime you like and don't worry you can charge 2500mah PowerEx batteries using any AA compatible Maha Charger. | | • | Excellent for power intensive devices like digital cameras, MP3 Players, Game Boy, CD Players, Global Position System, etc. |
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| Editorial Reviews:
Product Description
Maha Energy is a global leader specializing in the design, manufacturing, and distribution of battery and charging technology for various industrial and consumer sectors. With state-of-the-art research labs and production facilities, Maha creates a global service network for both standard and custom-designed applications.PRODUCT FEATURES:PowerEx Ultra high capacity AA batteries offer a super long run time! That's up to 30-40% more than some competitors! Recharge hundreds of times;PowerEx batteries are manufactured to industrial standards for the consumer market;Comes with a PowerEx battery carrying case that can hold up to four AA or AAA batteries;Memory free operation means you can charge PowerEX batteries anytime;Excellent for power intensive devices like digital cameras, MP3 Players, Game Boy, CD Players, Global Position System, etc.
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| Customer Reviews: Read 13 more reviews...
 These die after months of use August 24, 2008
Powerex AA rechargeable batteries
Although touted as having the power necessary to run digital cameras, these 2700 mAh batteries will last you less than a year. Unlike the current crop of batteries designed to hold charges for extended periods, these batteries won't stay charged in an unused digital camera for more than a day after a few months of use.
I checked to make sure it wasn't my camera draining the batteries- using Eneloops, it was clear there was not a power drain problem. Using the batteries in an electric toothbrush, I again found the power falling off rapidly after a couple of days of non-use.
Testing conditions for these were meant to be ideal- the batteries were kept in a Powerex AA battery charger specifically designed to maintain charge and condition the batteries. Despite this, after several months of very light use, batteries taken fully charged out of the charger and put into a camera would hold a charge for about 2 days before burning out. Under the exact same conditions, my Eneloop batteries would hold a charge for many days, maybe weeks. Initially the Powerex batteries could hold a charge for several weeks, but this capacity was quickly lost after about 9 months.
Therefore if you're looking for long-term savings on AA batteries by using NiMH rechargeables, stay away from Powerex.
Rating: 2 stars
Recommended: No
 Great batteries August 16, 2008
This is the first time I have purchased rechargeable AA NiMH batteries. I purchased them specifically for a Canon 580EX II flash. Flashes eat up batteries. I have also used them in my MineLab metal detector. The batteries have worked great and I am very pleased with this brand.
Buying more PowerX batteries July 19, 2008
I currently own 8 2300 mAh batteries, purchased 2 years ago. Not one problem with them and they are still going strong, maybe not like new, but I can't measure the difference.
12 of some off-brand name AA's I have went to the great beyond and need to be replaced and am purchasing 8 2700 mAh PowerX batteries today.
I use them in my Canon580EX II and Metz 54 flash units. A portable power pack costs more, weighs more and is a PIA to carry around. These hi-mAh batteries give a big bang for the buck and the plastic carry-case's can be carried comfortably in your pockets.
Plus I use them in my Oly C-5050 and as stand-by for my Canon 5D should I run out of juice from the Lithium Canon Batteries. They are also used for my portable TV, AM/FM radio, aircraft headsets and race track radio gear.
I also have 2 Maha MH-C401FS 1 hour chargers and I can't praise them enough. You can actually tell when one cell is failing because it takes longer to charge (red light stays on) since each battery is charged independently from the others. That is also a very good buy.
I don't know anyone who uses the Sanyo brand so I can't comment. I am a pro-photographer.
The Gold Standard in Rechargables.. July 1, 2008
This is the #1 rated and #1 selling ni-mh battery in Japan for a reason. These are infallible, even after a year of use, they keep on ticking. The charger is great too. It regulates and even has a setting to empty the batteries before you charge them. Just a higher class of rechargeable.
Worth the money! June 10, 2008
I am a wedding and portrait photographer, so I am always on the lookout for long-lasting, quick recycling rechargeable batteries. I have tried Lenmar, Wewin, Calumet and Energizer batteries for my strobes and the Powerex have outperformed them all. In particular, when charged in a Maha charger, these puppies will last! You can't go wrong with Powerex.
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