Energizer Rechargeable AA NiMH Batteries, 8-Count
by Energizer Batteries
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Digital Cameras Photo Reviews of Energizer Rechargeable AA NiMH Batteries, 8-Count
Customer Review: Long Lasting - Great with the 15 Min Recharger
Summary: 5 Stars
I have purchased a total of 16 of these rechargeables. These are the best 2500 mAh rated batteries I've ever used. I've also tried the Sony 2500 mAh and the Duracell ACCU 2500 mAh and returned those since they did not work as well.
I use these batteries primarily in my sister's Roboraptor toy. The Roboraptor is a high drain device (walks and bites) and eats up regular alkalines very quickly (Energizer Max, Duracell Coppertops, and even the Ultra and e2 series). These 2500 mAh not only last longer, but they also seem to deliver more power to the toy resulting in improved walking performance and quicker snaps and lunges at your hands (to my sister's fright). Don't worry about the 1.2V rating which is lower than a regular alkaline rating of 1.5V.
These batteries also work well in my wireless keyboard and in various remote controls although these are low drain devices. In the past 5 months, I have not had to recharge those once. They are probably better suited where batteries would normally have to be replaced more often.
You can buy these 2500 mAh cells in either 4 pack or 8 pack individually. They can also come paired with a compact 8 hour charger (comes with 4 2500 mAh cells). I have used this charger before and it is very slow. It charges 4 cells at a time on an 8 hour cycle and does not feature any sort of detection ability to stop charging when the cells are full. Energizer also makes another charger - a 15 min quick charger. It is more bulky but it charges these 2500 mAh batteries in 20 min or less. However, the charger itself doesn't come with any 2500 mAh...instead it comes with 2250 cells. This charger will stop though once the batteries are fully charged. With this technology comes a higher price though.
Customer Review: Great Longevity in High Current Drain Applications
Summary: 5 Stars
These batteries are do a great job of providing long life in high curent drain applicaions. I recently bought my wife an iGolf GPS unit that measures the distance to the middle of the green using GPS technology. The unit works great but only lasts ~ 10 hours on a set of alkaline AA batteries. After looking into some alternatives I found that these Energizer AA NiMH batteries have the highest capacity (mAh) of the brand name batteries available. The result is that after a full charge she can get upwards of 12-14 hours of iGolf usage before the batteries run out. You can access the technical specification sheets on the enegizer web site and detemine if they would work well in your particular application. I suspect that some of the other reviewers which are having problems may be using them in devices where 1.2V (NiMH chemistry) do not work well and require a conventional battery (zinc carbon or alkaline) that delivers a full 1.5V. If your application can use the slightly lower voltages that these deliver then they are a great buy and should save you some money in the long run.Customer Review: powerful!!
Summary: 5 Stars
2500 mAh Energizer AA : These batteries are POWERFUL. You will need to use an overnight charger & let them charge for the whole time listed to get the complete & fullest charge for these batteries. The quick chargers are good for keeping the teary eyed toddler from throwing a fit, then after he goes to bed, put them in the overnight charger. These batteries have been in our son's Leapfrog Clickstart keyboard for over a month & they are STILL going strong, longer than the regular AA's, and he uses it everyday. We have the C size in the console & same there, over a month now - almost 2 - lasting longer than the regular batteries did (only a month) I am completely amazed at how long they hold a charge. I am getting more because we seem to have quite a few things that need AAs. The price may seem steep at first, but we will save quite a lot in just a year by using these rechargeables.
Customer Review: Cut cost and waste - Great!
Summary: 5 Stars
I have used the energizer rechargeable for years. I love to go camping. Flash lights, mp3 players and other battery hungry devices can become very expensive to power. Not to mention the everyday items around the house like my wireless mouse and keyboard and tv remotes. I have used the same rechargables at least 100x. I never purached new batteries for tv remotes, mp3 players or flash lights. I use a Mag light which takes 3D battery. I use the slow charger. I have never had a problem.
Two tips for using rechargeables:
Use slow charge for longer life of battery in terms of number of recharges, and long life as for as maintining a charge.
Use the fast charger (15 min quick charge) when you tv remote dies on you and you need batteries fast.
If you have not made the switch to rechargable, do yourself a favor and switch.
Customer Review: The best NiMH AA batteries
Summary: 5 Stars
I use these batteries with the Energizer Quick (15-min) charger. It's important to note that these are the 2500 mAH batteries. Energizer also makes 2100 and 2200 versions that are sometimes erroneously listed as 2500 on others' websites. These are the real deal.
They charge within 15 minutes in the charger and keep their charge as indicated. I keep extras with me when I am photographing, as my flash is power hungry. I often get more flashes out than the manufacturer claims is possible with its own proprietary battery.
I have charged, discharged, and recharged them many times with no noticeable loss. They do get very hot in the charger and need to cool before using. Also--and this is probably obvious--they do not work once wet, even if allowed to dry. (I had an unfortunate experience with a canoe and a lake.)