 | |  | | | 2nd Gen eneloop AAA battery x 4 BLISTER PACK-1500 cycle | | | | | | | |
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| | Features | New 2nd Gen AAA eneloop Recharge up to 1500 times4 AAA Size eneloop rechargeable Pre Charged ready to go out of the box!Low Self Discharge: Batteries maintain 75% charge after 3 years of non-use800 mAH power - 1500 cyclesNo memory effect
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| | Description | The new SEC-HR4U4BPN 4-AAA eneloop battery pack utilizes SANYO's advanced rechargeable battery technology allowing them to last longer than ever before! They provide excellent performance-to-cost advantages over both conventional alkaline and other rechargeable batteries. Unlike disposable batteries which can only be used only once and are wasteful to the environment, the new eneloop batteries can be recharged up to 1,500 times. They come pre-charged, can be used immediately out of the pack and maintain 75% of their charge for up to 3 years when not in use. Eneloop batteries deliver reliable battery performance when you need it the most! | |
| | Product Details | | Product Length: | 0.58 inches | | Product Width: | 3.75 inches | | Product Height: | 4.5 inches | | Product Weight: | 0.14 pounds | | Package Length: | 3.2 inches | | Package Width: | 2.7 inches | | Package Height: | 0.3 inches | | Package Weight: | 0.05 pounds | | Average Customer Rating: |  based on 134 reviews |
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| | Customer Reviews | Average Customer Review: ( 134 customer reviews )
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Most Helpful Customer Reviews
246 of 255 found the following review helpful:
 Second-gen eneloop better than the first - by a hair May 01, 2011
By NLee the Engineer
This package (Sanyo SEC-HR4U4BPN) contains four second-generation eneloop AAA rechargeable batteries. I have tested those cells using my old La Crosse BC-900 Advanced Battery Charger. Here are my findings:
- Right out of the package, the average remaining charge is 640mAh, or 80% of the rated capacity (800mAh)
- After the first recharge cycle, the average capacity increased to 839mAh.
- After two more recharge/discharge cycles, the average capacity leveled off at 843mAh, or 5% higher than rated capacity.
The above is very consistent with the results I obtained last year, while testing 2nd-gen eneloop AAA cells from the Costco package. Therefore I have no doubt that those batteries are genuine. Date code embossed on them says "10-12", which means Dec 2010 (see my upload in the "Customer Images" section, if you need to know where to find the date code).
According to Sanyo press releases, those 2nd-generation eneloop cells offer several benefits over the original eneloop:
- Can be recharged "up to 1500 cycles" (vs. "1000 cycles" for the original)
- Can hold "75% charge after 3 years" (vs. "80% after 2 years")
- Works down to -20 degree C (vs. -10 degree C)
In real life, however, it is nearly impossible for the average user to experience those benefits. Note the even if you recharge your cells twice every week, it will take nearly ten years to reach 1000 cycles. Furthermore, the advertised self-discharge rates for new and old eneloop cells are actually the same during first two years.
As to the capacity: original eneloop AAA cells have "Typ. 800mAh, Min. 750mAh" printed on them. The new eneloop AAA cells only say "Min. 750mAh". This has created confusions for some people, who thought the new version has lower capacity. But according to Sanyo web site, capacity of the new AAA is also 800mAh typical. My own test results, however, have shown that measured capacity of the original eneloop is around 4% higher than rated, whereas capacity of the new eneloop is about 5% higher than rated. Again, the difference is so small that most users will never notice it.
BOTTOM LINE:
Second-generation eneloop cells do offer some improvements over the original, but the actual benefit is very hard to verify in real life. In my case, the price I paid for this new eneloop AAA package is only 10% higher than that of the old one, so I consider it a good deal. If the price difference is much greater, then you have to decide whether it is worthwhile to pay extra for those perceived benefits.
[Update on May 31, 2011]
Prices for the new eneloop AAA have came down further during the past month, so now it is an even better deal. But just in case you are looking for greater bargains, you may want to consider the GP ReCkyo Pre-Charged AAA cells. They are priced lower than Sanyo eneloop, and have slightly higher capacity (rated 850mAh, measured 880mAh).
[Update on July 31, 2011]
Long term self-discharge data: I have tested a pair of new eneloop AAA cells after 92 days sitting on the shelf (the batteries, not me). The average remaining charge is 89.4%. This charge-retention rate is slightly better than that of the original eneloop, but the difference is within margin of error for my experiment.
[Update on May 8, 2012]
Just in case you are looking for my "Sanyo eneloop FAQ", it can now be found under product page for Sanyo eneloop 4 Pack AA.
4 of 4 found the following review helpful:
Long lasting and stable supply voltage Dec 12, 2011
By Lee Chor Win
Like Sanyo Eneloop rechargeable battery, the voltage storage is great, where after 1 month, it still store like "just full charge" power, no need to charge battery night before use.
Put the AAA eneloop to my cordless phone, found it last longer, as the voltage more stable and remain on high side, compare to other brand rechargeable battery, where it degrade fast. The recharge count also higher compare to "other" famous brand.
4 of 4 found the following review helpful:
Saved me from having to purchase new Panasonic cordless phones! Oct 30, 2011
By Lonely Tourist
I wanted to thank the reviewer who pointed out these batteries work great on the Panasonic cordless phones, but forgot where I saw his review on Amazon. Anyway, I had so many issues with my Panasonic phones 2-3 years after I got them. If you read the reviews on the Panasonic cordless phones, people were talking about how they did not work shortly after getting them and list of what was wrong was wrong. I experienced all those issues with my phone and thought, "Jeesh! I love my phone and do not want to have to purchase one every couple of years!" I tried all other rechargeables in my phones to no avail - they were demon possessed or something because I could not get them to work. I was down to one cordless phone that I could use for 1 1/2 hours, so out of pure desperation, driven by cheapness (didn't want to fork out $75 for a new phone system), I purchased these batteries and lo and behold! All three of my cordless phones are working like new again! Hallelujah!! The batteries are amazing and they last for such a long time. I am a believer!!
6 of 7 found the following review helpful:
great batteries May 17, 2011
By Aera
They came fully charged, I used them 5 days in wireless headphones before they needed to be charged. Very impressed with life of these. I will definitely buy this brand again.
3 of 3 found the following review helpful:
Sanyo NEW 1500 eneloop 4 Pack AAA Ni-MH Pre- Jan 15, 2012
By W. Christian
"wchris"
Long lasting (holds charger well). Haven't had any that lost juice after sitting for months on end. Definitely recommend opposed to the generic (tenegy) batteries which sometimes can lose charge rather quickly.
See all 134 customer reviews on Amazon.com
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