Energizer NH15BP-4 ACCU 2500mAh Rechargeable AA Batteries (Four-pack)

The bicycle light seems as bright as it ever was with alkaline batteries, affording good visibility during night time cycling. And stopping play---er, experimentation---with the LEGO robots for recharging has yet to be a problem.

However, I do have to issue this warning: these batteries are slightly fatter than standard AA batteries. I tried using them in a Mini Mag Light. After I got one battery in the light's barrel, I realized---too late---that I'd never get the batteries back out. I ended up destroying the Mini Mag Light in order to retrieve the batteries.

If your application is cramped for space, beware! If they do fit, expect good energy for a good long time.


Great batteries   February 24, 2006
Vlad G (Boston, USA)
66 out of 71 found this review helpful

I used to buy excellent Maha rechargable batteries, but finally Energizer attracted my attention. Great price, great capacity. After about 20 recharges batteries are strong and do not show any signs of problems.
I use them in old, power hungry and very demanding Olympus E-10 camera. It is known to draw up to one amper of current and to declare batteries empty as far as their voltage goes slightly below 1.2 volts. Considering number of pictures I can take comparing to Maha 2100 MAh batteries, I can say Energizer is very strong performer and 2500MAh is not just a number.

Some users complained about very bad performance for Energizer.
There could be couple things to consider:
- make sure you have decent charger: many high capacity NiMh batteries can be destroyed easily with cheap (<$20) charger - overheat and overcharge are usual suspects
- some devices expect 1.5 volts, not 1.2 that all NiMh normally deliver; in general freshly charged good set of NiMh has voltage around 1.4 volts - but it goes down very fast to 1.2 v and stays there until batteries are nearly empty. Most modern cameras have "cut off" voltage set to 1.1 v

Update on Feb 7, 2007
I should mention that 4 out of my 12 Energizer batteries suddenly stopped to work. Surprisingly these are four spares I have not used much. I suspect that these batteries may develop a problem if left uncharged for prolonged period of time. For now I have bought Sanyo slow discharge Eneloop batteries (available at Amazon) as a replacement.


Okay Product - There Are Better Batteries Out There...   September 25, 2000
Nom de Plume (Pacific Northwest)
48 out of 61 found this review helpful

These AA rechargeable batteries work well and will save you money over the long term - however, if you click on the picture of the product, you'll notice that these batteries are rated at 1200 mAh. The Kodak rechargeable batteries (also available on this site) are rated at 1450 mAh and are THE SAME PRICE!!! If you aren't into the technical explanation of what the numbers mean, I'll help you; you get more juice for your buck with the Kodak product.


Essential If You Have High Drain Devices!   September 9, 2001
Brendan Munoz (Cypress, TX USA)
20 out of 25 found this review helpful

These batteries are a amazing purchase. I use my digital camera for my business that takes 4 AA batteries. The camera would use regular batteries in about an hour. So I was buying 4.99 packs of batteries EVERY day (to get ONE hour of use out of them)before purchasing the Rechargeables and a charger.

Sure, it seems like a lot of money at first but think about it this way. In A month of using my camera I would have spent well over $150 on old style batteries. Or I could spend the 25-30 for the charger and use these batteries.

The batteries have lasted over a year now and still charging and going. I have read that some people have issues with how long they stay charged. I however don't have this problem. I have only purchased one set, although two sets might be a valid investment so you can have one set charging while you use the other.

Either way spending the few extra dollars now on rechargeables will in the end be worth it. In this hi-tech, hi-dollar world, more things should be THIS reliable.