Energizer NH15BP-4 Rechargeable AA Battery 4 Pack
by Energizer Batteries
|
List Price: Our Price: $7.72 You Save: $10.15 (57%) Availability: Usually ships in 1-2 business days Buy Used: from $4.25 (click here) Category: CE See more product details |
|---|
Customers in the UK,
Buy this product at amazon.co.uk
for British Pounds
Digital Cameras Photo Reviews of Energizer NH15BP-4 Rechargeable AA Battery 4 Pack
Customer Review: Great batteries
Summary: 5 Stars
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.
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: Not worth it! Self-discharge rate is too high!
Summary: 2 Stars
As many other reviewers have pointed out, these batteries have a very high self-discharge rate. This means that within a short period of time (for me about 7-10 days) they will be completely dead even if you completely charged them and never used them. The only reason I didn't give these batteries 1 star is because they do work well right out of the charger. But you pretty much have to use them within 2-3 days of charging. Wait any longer and it will already be significantly discharged. I know I didn't just get a bad batch either because I have a couple dozen of these Energizers which I purchased over the course of 2+ years. I didn't notice the discharge rate at first because I used to charge my batteries pretty frequently to make sure I always had a fresh set in whatever device I was using. But eventually I started noticing that even my "freshly charged" batteries weren't lasting very long. So I started paying closer attention to how frequently I charged my batteries and realized that even after a week they would be mostly or completely dead.
I've switched over to Rayovac Hybrids and Sanyo Eneloops which both have a much lower self-discharge. I've very happy with both of them and would definitely recommend either of them over these Energizers. I hope that Energizer eventually comes out with some low self-discharge batteries because I really like their other batteries. But avoid the rechargeables. They're just not worth it.
Customer Review: Unreliable Energizer 2500 mAH AA experience
Summary: 1 Stars
I've been using NIMH batteries from SANYO, NEXCELL, POWEREX and AccuPower for over 6 years. Use them for everything from high current drain digital cameras and high-end digital audio recorders to CD players, bathroom scales and flashlights.
I rely on two of the excellent MAHA MH-C401FSB smart 2-rate chargers. These charge and monitor each battery independently, not in pairs. Energizer 2500 mAH units were fine for about three months. Then I noticed that devices would be calling for new batteries with little to no use. This has never happened with other AAs NIMH, including those with less than half the advertised capacity. The MAHA charger also started reporting that some of the Energizer AAs were not taking a charge at all.
Kept finding that typically one out of four were the problem. Many of the 32 AA Energizers I bought have had problems. Repeatedly have had one battery run out of charge while others still test very strong. Felt pen dots put on discharged batteries showed it was the same batteries time and time again. Have reverted in some cases to 1600 mAH SANYO OEM batteries put in service in Feb 2001 and those provide longer and more reliable performance!
In my considerable experience with these 2500 mAH AA Energizers they have been a very big disappointment and, regardless of warranty, cannot be relied upon.
Customer Review: NOT 2500Mah
Summary: 4 Stars
I've been using these kind of batteries for about 4-5 years. I love energizer rechargeable. I bought these because i needed new ones due to lost old ones. I've always used the 2500 Mah in the past, their discharge rate makes anything motor driven haul ass, for example in an RC car that will not run on carpet, put these in at full charge it will be doing laps around your living room faster than ever. The package of batteries i got where of the 2350mah category, was a little dissapointed they were not 2500's but according to their packaging they have better longevity with the number of times you can charge them. Although i have always lost the batteries before that happens.
I am currently using them with Emergency Battery Charger w/Flashlight For iPhone 3G 3GS and any devices that are charged through a USB cable! and they charge up my phone/speaker/mp3 player quickly and with plenty of left over juice. I have a iHome iHM7 Rechargeable Mini Speaker for iPod (Black) and an iPod in a setup for travel. with these batteries and that charging unit i can keep my speaker and ipod charged up all day long of playing.