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Powerex MHRAA4 AA 2700mAh 4-Pack Rechargeable Batteries

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4.4 1,008 ratings

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Number of Batteries	4 AA batteries required. (included)
Brand	Powerex
Battery Cell Composition	NiMH
Recommended Uses For Product	GPS
Unit Count	4.0 Count

About this item

Nickel-Metal Hydride (NiMH) Chemistry
Voltage of 1.2V and a capacity of 2700mAh
Batteries can be recharged hundreds of times, and because they have memory-free operation, the will not develop memory effect, which can cause batteries to hold less charge
These batteries will retain a charge at or near full capacities even after hundreds of charges
A battery carrying case is included

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Customer reviews

4.4 out of 5

1,008 global ratings

How customer reviews and ratings work

Customers say

Customers like the quality, performance, value, and capacity of the battery. For example, they mention that it holds a charge well, works perfectly, and is well worth the price. Some appreciate the versatility. That said, opinions are mixed on consistency, charging, and fit.

AI-generated from the text of customer reviews

427 customers mention344 positive83 negative

Customers like the quality of the battery. They say it holds a charge well, and lasts through lots of charges. Customers also say the shelf life of this set is very good, and the batteries are solid rechargeable batteries with superior charge holding capabilities. They are the best most reliable AA's, and have no signs of deterioration.

"...Yes eneloops are great batteries, and HOLD a charge like nothing else..." Read more

"It is good quality battery and work good on Nikon strobe. Nice to have rechargeable batteries." Read more

"...I recorded entire shows/parades etc. No failures experienced.Shot all that video, and still had plenty of juice to take flash pictures...." Read more

"...removing them from the charger, these are for you, with superior charge holding capabilities...." Read more

155 customers mention133 positive22 negative

Customers like the performance of the battery. They mention that it works perfectly with their MFLB, and is reputed to offer the best performance and longevity for the price. Some say that the batteries are very powerful and recharge fast.

"...to re-juvinate and cycle (discharge and recharge) batteries: it works very well...." Read more

"It is good quality battery and work good on Nikon strobe. Nice to have rechargeable batteries." Read more

"...They do work well it's just for how long.After a few weeks of use it seems that I couldn't get many "hits" before they were dead...." Read more

"...They have performed well above average compared to Energizer 2100 & 2300mAh batteries and Energizer & Duracell alkaline batteries I've tried in a..." Read more

108 customers mention92 positive16 negative

Customers like the value of the battery. They say it's well worth the price, the savings is amazing, and it'll last a long time. They also say it’s an inexpensive solution for professional photographers using multiple small off-camera flashes. Customers also love the convenience and cost effectiveness of rechargeable batteries.

"...the specific capacity of your batteries, the MH-C800S is a good choice at the right price. It too will tell you if your battery is shot...." Read more

"...These hi-mAh batteries give a big bang for the buck and the plastic carry-case's can be carried comfortably in your pockets...." Read more

"...These are worth the money and there is a clear difference in performance between these and the rechargeable batteries by Energizer or Duracell." Read more

"...They are substantially less expensive per unit, and have close to the total mAh rating as the Basics Black...." Read more

27 customers mention24 positive3 negative

Customers like the capacity of the battery. They say it holds a lot of power, is reliable, and is good in cold temperatures. Some customers mention that the battery has a high power capacity, but it has rapid self-discharge.

"...bit of space is devoted to storing charge, which gives them a very high capacity...." Read more

"...These batteries are high capacity in comparison to what's out there, last as long or longer compared to the competition (like industry leader Sanyo)..." Read more

"...They have more than twice the capacity of the one that came with the light...." Read more

"...And amazing capacity that I got hundreds of flashes ( typically at 16th, 1/8th, 1/4 power) flashes from- it they still fully charged my flash at 3-..." Read more

23 customers mention23 positive0 negative

Customers like the versatility of the battery. They say it's great for DSLR flash units, MFLB, digital cameras, and camera strobes. Some mention that it'll be useful for a professional photographer with high battery demands.

"Yes, these batteries are very strong and long lasting.Perfect for using in the MFLB (Magic flight launch box) But that would require you to..." Read more

"...Great idea for MFLB users." Read more

"...Long lasting. Perfect for MFB. DON'T FORGET TO PEEL THEM!" Read more

"Great for use in my small wooden flight machine. Just peel back the label and use iso alcohol to clean up the outside." Read more

25 customers mention10 positive15 negative

Customers are mixed about the consistency of the battery. Some mention that it's the best of the best, while others say that it gets weak and dissatisfied with the quality.

"...UPDATE: These Batteries only lasted about a month in the mflb. Kept getting weaker & weaker. Didn't like the high self discharge either...." Read more

"...Highly recommend this battery so far. No bad cells found out of the 120+ tested (purchased in several batches)." Read more

"...All in all, good buy for the money, but not perfect." Read more

"...When testing these batteries for full charge that are very consistent from one batter to the next." Read more

24 customers mention12 positive12 negative

Customers have mixed opinions about the charging of the battery. Some say that it charges quickly when plugged in, while others say that two of them wouldn't charge or cycle anymore.

"...They charged fine in its charger but when I tried to place it in, it seemed like a tight fit and did not work at all...." Read more

"...they have no power and I can't get them to hold enough of a charge to even turn on the GPS...." Read more

"...They came fully charged, which is always a plus. They hold their charge fantastically, provide, solid power, and last long...." Read more

"...I tried what I knew, but I couldn't get it to recharge, or even to read that a battery was there...." Read more

16 customers mention7 positive9 negative

Customers are mixed about the fit of the battery. Some mention that it fits right into their MFLB charger and even comes with their own nifty plastic carrying. However, others say that while they work, they're not a perfect fit and won't fit into all devices due to a slightly larger circumference.

"...'re using them in the MFLB, know that while they work, they're not a perfect fit...." Read more

"...rubbing alcohol and a rubber eraser, these batteries fit almost perfectly into the battery hole...." Read more

"...in its charger but when I tried to place it in, it seemed like a tight fit and did not work at all...." Read more

"...They fit right into my MFLB charger and even come with their own nifty plastic carrying case so you can keep them safe from shorting...." Read more

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M. Ormandy

Longest Lasting AA Batteries, Period

Reviewed in the United States on December 22, 2011

Verified Purchase

I've owned and tested everything out there, and this is the best in terms of mAh yield. I own a half dozen sets of these, and they all test at about 2600 mAh after refreshing. For reference, the duracell "2650 mAh" batteries test at around 2500 typically. Yes eneloops are great batteries, and HOLD a charge like nothing else (unbeatable for photographers who leave them sitting in the camera bag for long periods), but they can't match the raw output these batteries give. These batteries are designed for people like myself (regular scanner user)who go through a set of batteries every few days to a week, so that self-discharge isn't really an issue. You can't go wrong with these batteries if you rotate batteries at least every 1-2 weeks. If you want batteries that sit for long periods and hold a charge, buy eneloops, but realize they don't have the endurance these have. *****TIP: If you are serious about battery performance, you need a good charger that can refresh batteries, and can test them, display actual capacity, and charge at various rates. Remember that a set of batteries is no better than the weakest in the set, and unless you test, you might never notice that one is weaker than the others. A good refresh charger can often bring this weaker battery up to snuff with the others, and you can see the test to prove it. If it remains weaker, you can match it with weaker batteries for matched sets. Keep in mind, even great batteries like the Powerex batteries, sometimes need to be run through refresh cycles when new to get them to full capacity. Batteries that sit for a while also benefit from a refresh. Check out the AccuPower IQ328 charger that runs about $35 if you look around. It does all of this, and helps you get the full value out of top of the line batteries. Also, if possible keep charged sets in your refrigerator to slow self-discharge. Good luck.

7 people found this helpful

Helpful

Luke

Powerex Battery and Charger Overview

Reviewed in the United States on July 2, 2011

Verified Purchase

BACKGROUND:

I wanted a NiMH AA/AAA charging system that would remove the "mystery-of-the-charge" and provide more confidence in the rechargeable batteries I purchase. So, I did a little research like everyone does (or should do) before buying an item that's intended to last for years (find "The Best (aa/aaa)Charger Guide by John Dziadecki on Amazon - excellent read). I decided to buy two 4-packs of Powerex AA 2700's and two of Powerex AAA 950's to supplement some Duracell 2650's, Kodak 2550's, Energizer 2500's and an assortment of generic 2300's. I also bought two chargers: the MH-C9000 and the MH-C800S.

For years I've used an assortment of chargers with idiot lights. I had no idea HOW MUCH of a charge those batteries were getting or whether they really held the advertised capacity. But, it was very clear (and frustrating), that some of these batteries and/or chargers were very limited (junk?). I'm not sure how many times I installed newly charged NiMH batteries into a digital camera only to have the low battery icon show up after a couple shots: "Hmmmm...how many of these batteries are duds?" And, generic battery testers really don't tell you much, i.e., how 'good' is "Good"; How 'low' is "Low"? .....So, it took me a while to get fed up.

MH-C9000 Charger:

This thing definitely took most of the guess-work out of my rechargeable AA/AAA energy supply. I was able to get rid of six old NiMH AA's in the first week and "rescue" seven others with this charger. The directions with the charger are a little sketchy but, if you know the advertised capacity of your battery and its age, you'll be able to figure out how to best charge it and how many mAh's are available to you afterwards. You'll also be able to determine if the battery is shot. This isn't something you get to do with idiot-light chargers (which work just fine for lots of people). I remain very impressed with this charger.

MH-C800S Charger:

I bought the MH-C800S to supplement the -C9000 because of its 8-battery capacity. This charger does not provide battery capacity values at the completion of a charge cycle. It does however, have a 16-hour 'conditioning mode' designed to re-juvinate and cycle (discharge and recharge) batteries: it works very well. If you don't care about actually 'seeing' the specific capacity of your batteries, the MH-C800S is a good choice at the right price. It too will tell you if your battery is shot. This charger is all that most people will need or want for AA and AAA re-chargeables.

CAPACITIES:

I have not used Powerex re-chargable batteries long enough to comment on their discharge rate. But, thus far I haven't seen a difference between my older 2300 and 2700 mAh re-chargeables and the Powerex batteries. It's also too early to determine if the Powerex batteries will last through 1000's of charges.

The Powerex AAA batteries have an advertised capacity of 950mAh. They charged out between 956-967 in the MH-C9000's "Break-In" mode. Allowing for heat attenuation, full capacity is about 920. I'll know more when I recharge them.

The Powerex AA batteries have an advertised capacity of 2700mAh. They charged out between 2556-2650 in the MH-C9000's "Break-In" mode. Allowing for heat attenuation, full capacity might be about 2300. I'll know more when I recharge them.

Some of my older batteries charged out at significantly higher rates than advertised after putting them through the MH-C9000's "Refresh and Analyze" mode: these older batteries are holding charges longer and they discharge more consistently. I can tell that those instances of partially-charged batteries screwing up the camera's current requirement will be fewer. At least now, I'll be able to sort out the weak, lame and starving in the herd.

SUMMARY:

Of course, there are other ways to do what I did. The Powerex battery purchase was based on the charger purchase: I figured it best to stay with a certain brand and keep the system homogenous. Not necessary at all. The price was right for the batteries and they came with convenient storage cases. In time, if Powerex batteries don't perform well, I'll probably start replacing all my batteries with an assortment of Sanyo Eneloops. I'm in the process of learning what a good rechargeable AA/AAA battery really is.

There are several other chargers that perform similar to the MH-C9000 and -C800S: LaCrosse, Sony, and/or Sanyo. Reviews for the Powerex MH- products appealed to my technical comfort level and budget. Good stuff!

15 people found this helpful

Helpful

Jon5793

Quality

Reviewed in the United States on May 24, 2024

Verified Purchase

It is good quality battery and work good on Nikon strobe. Nice to have rechargeable batteries.

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John F May

Great batteries

Reviewed in Canada on November 9, 2022

Size: 4-PackVerified Purchase

Have ordered before, good price & fast delivery

nathan Gaucher

Bon produit, bonne alternative

Reviewed in France on April 1, 2020

Size: 4-PackVerified Purchase

Les piles ont une bonne qualité de vie, je m'en sert pour une mflb et je dois dire que je suis aux anges.

One person found this helpful

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gebäude.1 Fotografie

Nicht für diesen Preis

Reviewed in Germany on April 3, 2019

Size: 4-PackVerified Purchase

Wir haben diese Akkus wegen des angeblich "viel geringeren Innenwiderstandes" gegenüber den Eneloop-Akkus gekauft, für den Betrieb im Rotolight Neo2. Unter hoher Beanspruchung werden die MAha-Powerex-Akkus nahezu genauso warm wie die deutlich günstigeren Eneloop-Akkus. Die 200mAH Mehrkapazität gehen locker in den Toleranzen in der Akkufertigung und im Einsatzprodukt unter. Die Akkus kosten mehr als doppelt so viel wie die Eneloops. Lohnt sich absolut nicht!

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Gkw94js

Las mejores pilas recargables y de alto rendimiento

Reviewed in Spain on June 27, 2017

Size: 4-PackVerified Purchase

Las mejores pilas que hay. Las uso para un flash externo Canon 430 II EX speed. No fallan nunca y siempre a la máxima potencia. Su precio caro realmente merece la pena si quieres algo bueno.

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Terry

Great Batteries!

Reviewed in Canada on December 7, 2016

Verified Purchase

I have about 40 of these rechargeable batteries now. I use them for my off camera flash units for wedding photography. They work great, recharge fast and last a long time!

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Powerex MHRAA4 AA 2700mAh 4-Pack Rechargeable Batteries

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