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| Brand: Sanyo
List Price: $19.95
Buy New: $4.14
You Save: $15.81 (79%)
New (42)
Rating:  455 reviews
Color: white
Media: Electronics
Battery Type: NiMh
Shipping Weight (lbs): 0.3
Dimensions (in): 2.3 x 0.5 x 2
Legal Disclaimer: Warranty does not cover misuse of product.
MPN: SEC-HR3UTG-4BP
Model: SEC-HR3UTG-4BP
UPC: 043712119035
EAN: 0043712119035
ASIN: B000IV2WAW
Availability: Usually ships in 1-2 business days
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| Customer Reviews:
Showing reviews 6-10 of 455
 A SACRIFICE of capacity and performance for charge holding time November 12, 2007
HMMWV (santa clara, CA USA)
41 out of 66 found this review helpful
This is a well designed and well intended concept, unfortunately it's an in-between product and not an exact replacement for modern (2700 mAh) NiMH cells due to design limitations of the long term storage hybrid batteries.
First, most rechargable users have already become accustomed to charging their batteries RIGHT before use (and not letting them sit for months - that's the role for lithium cells) Most advanced chargers keep cells fresh using a trickle charge so they can be kept at their peak by leaving them in the charger.
Second, at 90% of 2000 mAh, we're now sitting at 1800 mAh. State of the art Sanyo "normal" Ni-MH cells fresh from the charger are 2700 mAh. So these batteries at one month are almost a full amp hour behind a freshly charged set of regular NiMH cells.
Finally, the eneloop cell's internal impedance is higher than the conventional NiMH cell. The result is poorer performance in the product - be that a dimmer flashlight, slower focus in the camera, or longer flash cycle times compared to NiMH typical performance.
As an in-between product, they have a few practical uses. I might consider using them in my image stabilized binoculars because they sit for a long time between usage, however I've learned to keep a set of AA lithium cells in the case should my NiMH die. I would NOT use these in a camera flash as I want maximum current, maximum voltage, and maximum capacity in that application, where NiMH outperform alkaline cells.
Purchase the state of the art in normal NiMH cells at 2700 mAh and you're nearly 1 amp hour ahead after charging them. The next generation of state of the art NiMH cells is expected to debut at 3000 mAh on the market very soon (a few months from now).
So it all boils down to a trade off. Long term storage or maximum performance. Maybe a mix of both is needed sometimes, but realize you are sacrificing one for the other.
 Buying my 4th set April 2, 2007
C. Stoneham (Texas)
38 out of 40 found this review helpful
I was initially skeptical when I bought these but figured it couldn't hurt. I needed a set for my Nikon SB-600 flash. The 2700 mAh Energizers I had performed just fine until they sat in the flash for a month, at which point I had to carry a spare set "just in case". I charged the Eneloops, placed them in the flash and had my first call a month later. They worked wonderfully. I went the whole evening without needed spares. I used them again two months later and got a solid hour or two before they were exhausted. They easily lasted 2-3x as long as the Energizers and where in the flash for 2x as long. All-in-all, they've performaed very well. They may not maintain 85% of their charge after one year at room temp (as one reviewer suggested) but they certainly "sit in the bag" far better than my others. I am slowly phasing out all my non-Eneloops as a result...
 Simple little charger that gets the job done - eventually February 10, 2007
NLee the Engineer (Nashua, NH)
35 out of 37 found this review helpful
This compact charger, MDR02, is best suited for traveling, because it is tiny (measures only 3"x3"x1"), very light (weights about the same as two AA cells), and accept universal input voltage (100-240V AC). It is also a "smart" charger in the sense that it charges each cell individually, and stops whenever each cell is full.
The main drawback of this charger is that it is rather slow. The charging current is 550mA for AA , and 380mA for AAA. That means it takes about four hours to charge up a pair of 2000mA eneloop cells. What if you need to charge up a set of four 2700mAh cells? That will take close to 12 hours! So you really should keep another faster charger for home use. Just remember that the eneloop cells do NOT require special chargers. Any good quality "smart" NiMH charger will do the job.
The reverse is also true - You can use this eneloop charger to charge other brands' AA or AAA NiMH cells. I keep one in my office just to charge up batteries for my MP3 players, headphones, wireless mouse, etc.
So much better than regular rechargeables June 8, 2007
B. Roy (Sunnyvale, CA, USA)
30 out of 32 found this review helpful
These 2100 mAh rechargeables are better than 2700 ones - Why - because the regular but higher capacity ones lose charge so quickly, within 10 days they have less charge left in them than the "eneloop" type.
I had some doubts how they would perform in the real world - in particular, their peak current capability (which will determine how well they actually work in a digital camera). Turns out - they do better than the regular ones. While my 1600 mAh panasonics gave approx 40 - 50 shots consistently, the same digital camera now gives me approx 100 shots with these eneloops. Suddenly my mom's camera which "ate up battery very quickly" - has become a "great camera" from the battery change. If she's happy, so am I. Incidentally - the amazon price is also very good - you can also try getting the ones with a charger - this eneloop charger charges batteries INDIVIDUALLY. This is critical - no matter which charger you buy - get ones that charge batteries individually and not in pairs. Also remember to always mark your batteries, so you don't mix up charged and discharged batteries when charging them. I've found this to be a common problem with many users.
Best batteries/charger January 9, 2007
A. Wong (CA USA)
25 out of 27 found this review helpful
11/2006:
I was going to buy the LaCrosse or Maha MH-504FS after reading tons of reviews. I'm glad that I didn't and bought this instead. First, this charger (not sure about the 2 batteries version) is a smart charger which monitors and charges batteries individually just like the LaCrosse. It is not a dumb timer charger you get for $10 or less. You don't need to worry about quick/slow charges (like 504FS) because it uses pulse charge to charge at a speed that's not too fast to hurt your batteries. Second, this charger costs so much less compared to Maha and LaCrosse. Third, I used these eneloop batteries fresh from the package without charging and took over 200 pictures (about 50 with flash and a few movie chip) with my Cannon A540. I believe it can take more pics because NIMH batteries take few cycles of discharge/recharge to reach full capacity. Last but not least, these eneloop battaries are able to hold the charge when sitting idle for months. Unless you charge the normal nimh batteries the night before, they are no good even if they are 2600 high power ones. By the time you use them, they are only partially charged.
I would recommand you to buy a LaCrosse if you still decide to use the ordinary NiMH batteries because you will need to use the refresh function to get rid of memory issue and the LED to tell you how much charge is left after letting the batteries sit for days. (Oh, I forgot to mention that eneloop claims that it can recharge 1000 times without memory issue.) However, if you decide to use the eneloop, forget about paying extra for Maha or LaCrosse and the normal Nimh batteries and just use this amazing charger and awesome batteries instead.
6/2007 update:
I bought a new set of Rayovac Hybrid Batteries to see how these compare to Eneloop because they are cheaper. I put the fresh new Rayovac in my digital camera, it works. But when I put it in a LED flashlight, the LED has no light output at all. Later, I put my used Eneloop (after 200 pictures) in it. Guess what? The LED works! Well, you get what you pay.
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