Powerex PRO High Capacity Rechargeable AA NiMH Batteries (1.2V, 2700mAh) - 8-Pack

Theses are the best batteries when buying the complete setup with charger must try!! Fresh batteries, would buy again definitely!!..

They've been re-charged more times than I remember without an issue. They do not noticeably lose their charge or leak while not in use for extended periods of time. I'm very pleased with them.

These AA rechargeable batteries are worth the extra cost. I’ve had 8 of these in constant use for over 5 years before they would no longer hold a full charge. As hard as I used them, they owed me nothing. These Powerex batteries are premium performance, made in Japan, a quality product. I would suggest you use a good Powerex or other quality programmable charger for maximum life and performance.

The TL;DR is that I'm happy enough with the batteries that, as the rest of my other batteries come due for replacement I'm planning to switch all 30 of them to these. I've been using rechargeable AAs pretty consistently since the early 2000s. It started off mostly being for my camera flashes, but I've been using them in a lot more stuff over the years as the battery tech has improved and as I started using more battery powered stuff. But, in all that time, buying this 8 pack of Powerex Pro batteries several months ago is my first experience with the brand. For the past 15-ish years, I've predominantly stuck with using Eneloop batteries (the regular ones, not the Pro) and they've been OK for me, but now that I'm using the batteries in more devices with motors, they're just not cutting it. The Eneloops will barely spin up some of the motors when they're under load, even when they're fresh off the charger, while these Powerex batteries keep the motors working as hard as they're supposed to. And, for things like my camera flashes, while the Eneloop batteries have been OK, they've never been great because they take longer to charge the capacitors. These Powerex batteries do better there too. Battery runtime is good. As long as stuff runs long enough, which I recognize is a subjective thing, I don't really care about the specific time, so I haven't done a real comparison test. These definitely run long enough compared with all my other batteries that I'd say they're at least as good as anything I've had previously, probably better. Service life will probably be fine, but I haven't had them long enough to comment on that. But, I will say that, if you're concerned about service life, use a high-quality, slower charger. I've been using an Ansmann Energy 16 charger for about 18 years as I'm writing this and when I switched to that charger my batteries began lasting several years longer before needing replacement compared with using a rapid charger. The quality of the batteries is only one part of what determines the service life. I also pull my batteries early if I'm using them in a high-drain situation so that the heat doesn't get a change to affect their longevity as much. I don't think they're being completely honest with setting expectations for the self-discharge rate, which is to say that I don't think that, if I left the batteries sit unused for a year after being taken off the charger, they'd still be at 75%. I haven't done any formal testing to prove the numbers, but I haven't been using the batteries as much as normal this spring and after some were sitting unused for probably about 3 months, my Xbox controller indicated much lower state of charge compared with a set taken straight off the charger and my charger indicated they were below 80%. Normally, I don't let batteries sit without being used for more than a couple of weeks after taking them off the charger, often no more than a couple of days, so it's a metric that doesn't really matter to me, but it's still worth mentioning.

They look great but is seems that their juice exhausts rather quickly compared to other brands I have had

Work fantastic and remain high capacity charge after charge

We are using these with wireless microphones. The Powerex batteries have proven themselves reliable over several years. I especially like the 2700 mAh capacity, and that they are made in Japan. They also arrive with a convenient reusable plastic storage case, and are packaged very simply (frustration free) in a cardboard sleeve. The packaging is very professional, allowing rapid deployment. We use a Titanium 16-bay charger for everyday charging, and an Opus charger to test the batteries condition. Using the Opus “quick test” feature, it is possible to match the batteries in pairs as well as weed out batteries that are performing poorly - before they can ruin your day. Because the batteries tend to go bad gradually, the only way to find them early is to use the Opus. Sometimes the bad batteries can be restored using the Opus “refresh” feature, but more often we just relegate out of spec batteries to less critical jobs. Long story short, I highly recommend these batteries!

The Powerex 8 pack of AA with the Powerex MH-C800S 8-Cell Smart Charger were purchased on April 10th 2022 (according to Amazon purchase record) to power wireless microphones for our live streamed church services. Five of the 8, in the last month died, unable to hold a charge, even with the recommended reconditioning cycles from the Powerex MH-C8005 Smart Charger. The old Powerex batteries with the red/silver/gold-X label are "mostly" still going strong with one battery requiring a slight charge after ~ 1 hour of church service and these older batteries were purchased long before COVID-19 at COSTCO or SAM Club. These batteries were used each Sunday and about a couple dozen or more extra services each year for Easter, Christmas, weddings and burial services... far below the specification of a maximum of 500 recharge cycles, not involving extreme hot or cold use conditions. Maha batteries, manufactured by Maha Energy Corporation, were considered the gold standard back when digital cameras were out selling film cameras. The reliability of Powerex batteries is now questionable for critical applications, such as live streaming a simple church service.

Best rechargeable batteries on the market bar none. I bought some of these in 2016 and they have been consistently great but recently they were showing sign of aging so I bought these as they are the Pro version. 9 years is amazing for batteries that have been recharged hundreds of times. I recommend these without a doubt.

Several years ago, I tried other brand name rechargeable AA batteries because I wanted to reduce recycling waste. The performance of these products was disappointing to mediocre. However, I have found the Powerex brand to have very good capacity and very capable of supplying high drain loads. I have used these batteries for several years now and just recently purchased enough to power all of the battery-powered devices that my family owns. I look forward to years of use before I will need to purchase another battery. I recommend this product.

Reliable. Have used some that are high-drain use and are repeatedly charged but last a good time. Have used others that are constantly trickle-charged and they last also. Have used some in slow-drain uses such as clocks etc and they also last well!

Excelente produto. Recomendo!

Utilizo baterías recargables para flashes de mano de distintas marcas, soy usuario de baterías eneloop por todas sus características y es la 2da vez compro estas baterías powermax. He de decir el rendimiento se acerca y parece similar a las eneloop cubro tanto eventos sociales como foto para e-commerce en ambos uso flashes y funcionan muy bien. Habrá que ver con el tiempo si su vida útil es como eneloop con las cuales llevo 5 años y con estas powermax mi 1er kit año y medio trabajando bien.