Energizer NH15BP-4 ACCU 2450mAh Rechargeable AA Batteries, 4-Count Package
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Customer Reviews of Energizer NH15BP-4 ACCU 2450mAh Rechargeable AA Batteries, 4-Count Package
Customer Review: horrible self discharge
Summary: 1 Stars
i have 8 of these and all of them self discharge to 0.9 v in less than a month.
Additionally, after maybe 10 cycles 4 of them are now flat 3 days xafter charging. 1 does not hold any charge at all
Customer Review: They can't hold a charge. Try Duracell instead?
Summary: 2 Stars
I have about two dozen NiMH rechargeables I use for various electronics devices, including three Nikon flash heads and a GPS. My Energizer 2300mAh and 2500mAh (marked NH-15AA) are much less reliable than my Duracell 2050 mAh. They discharge soon after recharging, and at least 20% are markedly worse than the others; almost one quarter of them are duds and I eventually discard them.
Note that I last bought these a year ago, and they are marked NH-15AA. Maybe Energizer has improved them, or they might simply be rebranded. However, the packaging looks identical.
I'd recommend Duracell instead.
I keep a battery meter next to my MAHA charger, and often find that one of the four batteries I remove from my device is significantly weaker than the other three. When this happens, I write a note on the side of the battery. After three strikes, I throw that battery away. I have discarded and recycled at least five Energizers, and can't recall throwing away a single Duracell.
Customer Review: Terrible self-discharge
Summary: 1 Stars
Several years ago when these came out I bought a whole bunch of them because I had previously been using the Rayovac rechargeable NiMh and they just didn't seem to hold a charge for very long. The Energizer ones seemed to be the best thing since sliced bread because they hold 2500 mA, meaning they should last longer, in theory. Well, the great performance in my digital camera only lasted so long. After a few months, I started noticing that my camera would flash the low-battery icon after only taking a handful of photos but couldn't figure out what the deal was. I tried buying new ones which started doing the same thing. As it turns out, it was that dirty term called "self-discharge rate" that was the culprit. Most tests now show that the Energizer rechargeable NiMh batteries have an absurdly high self-discharge rate. If you charge the batteries and keep them on hand for a month or so until you need them, there will be hardly any charge left in them! If I charge the batteries and pop them into the camera right from the charger, they last a long time. Otherwise, it stinks.
I much prefer the new Sanyo Eneloop batteries. They were engineered specifically to reduce the self-discharge rate. They are MUCH better. And it appears they cost less than the Energizer batteries. Don't worry about the mA rating being lower. The charge that your Energizer will have after sitting around for a few weeks will be lower than the 2000 mA in the Eneloop after the same amount of standby time.
Customer Review: Long lasting
Summary: 5 Stars
I had an older version of these batteries and they lasted 5 years. Saved a lot of money. They worked great with our digital camera.Customer Review: 2500 mAH AA Don't last a day!
Summary: 1 Stars
From the very first use of the Energizer 2500 mAH AA batteries, I was very disappointed. They didn't last but a few hours in my digital camera. They are only good for small flashlights and such and even then don't last as long as a regular disposable AA.
I also tried them in my small gps, fully charged, I took a 3 hour motorcycle ride and when I went to use the gps, the batteries were dead. They take a full 8 hours to re-charge and then don't even last that long in use. They discharge even without use in less than a week.
Poor product - not recommended for digital cameras, GPS or anything but a very small flashlight and even then, you can only count on them for about a day's use.