PowerexPRO High Capacity Rechargeable AA NiMH Batteries (1.2V, 2700mAh) - 8-Pack, (MH-8AAPRO-BH)

I have purchased about 50 of these batteries over the years and although they seem expensive- they are the best you can buy for peak performance and longevity. I use them my speedlites and on-camera trigger in weddings, portraits and editorial news work and I have still yet to figure out how many flashes I can get before they require a recharge! Seriously, no matter how long you use them- the recycle times on my flash remains constant regardless if its my 1st flash or the 200th, the power output is even throughout. I can't tell you how many times I have finished a shoot and then tried to drain them by manually popping my flashes at full-power just to see how many flashes I had remaining in the batteries! I don't ever know, because I get bored, lose count and give up. Seriously. They last for years before they finally go bad (won't recharge) and THAT is why they are inexpensive in comparison to anything else. available

The tests of this, and other NiMh, on the market - indicate easily that these are best-in-class; So, I have been using the Powerex and the Imedion battery with MaHa charger for ten years now; I have discarded a few that fail to test and charge properly after a few years - and that makes the MaHa charger extremely important (it will indicate when a battery can no longer be used reliably);Cycling NiMh such as these regularly is important;And, charge them immediately before you plan to use them;Use the Imedion battery in applications where it may sit un-used for up to twelve months;Use the POWEREX in a daily or weekly-use items such as a camera flash; these are great in a camera flash such as SB600 (fairly large flash);And, the MaHa product line has many other choices; and the MaHa charger can be used on Panasonic Eneloop and any other NiMh battery.Powerex is simply the very best in mAh and long-term reliabiliy (from a ten-year user).These batteries are a very good investment, be sure to get a MaHa charger with them.The first thing you will do with your MaHa is to weed out all of your bad / weak NiMh batteries from you battery drawer and properly re-cycle them; getting rid of the 'weak link' batteries is half the battle; if you have four NiMh ina camera flash, and one of them is weak, it is the same as if all four are bad / weak, because the batteries are wired in series. If you have a suspect battery: discard it (recycle)!Also, MaHa charger can be used to sort and group batteries by their capacity; so you can choose your four very best batteries, for example, for your most critical application; I will sometimes group batteries for my camera flash or for my flashlight, as one example. MaHa also sells a D battery with an insane mAhr rating say for a Maglite or similar critical use;

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!

Powerex is my favorite rechargeable battery. I began using them with a camera and attachable flash for family events like weddings. The batteries could be charged in my car as well in the house chargers. Some of my 10+ years-old batteries are still useable in my remotes. These new batteries are stronger and will last longer in flashlights and automatic motion lights. I like to use rechargeable batteries to cut down on landfill use.

I like this brand of battery, but I have noticed that these higher output batteries do not have as long a life as the standard output versions, so that being said it comes down to do you need high output or is longer battery life what one is looking for. In this case I have some devices that are really greedy on power and these last longer in them, but again you will only get about 500 charge cycles out of them before they go bad. If you need higher output then these are very good for that type of use and then the only draw back is having to replace them more often. I still get about two to three years out of them, but the standard Panasonic I have 10 years out of them, but they also don't last as long between charge cycles, so you will need to charge them more often. I would recommend these batteries.

Great rechargeable batteries, long shelf life and long run time