Sanyo Eneloop AAA NiMH Pre-Charged Rechargeable Batteries (4 Pack)
by SANYO
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Digital Cameras Photo Reviews of Sanyo Eneloop AAA NiMH Pre-Charged Rechargeable Batteries (4 Pack)
Customer Review: Recycle the alkaline batteries and go Sanyo Eneloop!
Summary: 5 Stars
Plain and simple, Sanyo Eneloop batteries hold their charge longer AND hold their voltage higher under discharge / load than almost all other NiMh rechargeable batteries on the market today, including other low self discharge competitors. Couple the Eneloop's with a Maha MH-C9000 charger and you're set with, what's arguably, the best combo available.
There have been a battery of tests done at (Google: candlepowerforums), and by an R/C enthusiast at (Google: stevanv). Relevant links below.
Eneloop - Performance details for Experts: candlepowerforums
Review: Testing Sanyo's Eneloop Low Self-Discharge Rechargeable Battery: stefanv
Facts:
- Eneloop is charged 75% before leaving the factory.
- Eneloop is excellent for high drain devices because of its ability to hold over 1 Volt under load. (Camera flashes, flashlights, etc...)
- Eneloop is excellent for low drain, such as clocks, remotes, etc... because of the excellent low self-discharge characteristics.
In AA's, rebranded Eneloop's are available from the following:
- Duracell Pre-Charged (white top at positive end, made in Japan)
- Sony CycleEnergy (Made in Japan)
- President's Choice (Made in Japan)
AAA's:
Stick with Eneloop. There just isn't good information available for rebranded Eneloop's.
** Non Eneloop review material **
I feel it should be mentioned, since there is some mis-information being spread regarding the Maha MH-C9000 charger in another review that touts the LaCrosse BC-900 over the Maha. The C9000 is EXCELLENT, and should be at the top of your list for chargers, period! The C9000 beats the LaCrosse BC-900 in every category except two; price and the BC-900's "REFRESH" mode. "REFRESH" will cycle (charge and discharge), in an attempt to "awaken" the cell, and will do this until there is no further capacity increase. Very nice feature, but is countered with the C9000's "Break-in" mode. For further explanation, read information at the link below.
Here is a direct comparison of the two chargers, feature for feature: (candlepowerforums - showpost.php?p=1891028&postcount=9
Comparison of many chargers, showing the C9000 to be #2 under an expensive hobby charger: (candlepowerforums, search "Charger Comparison". The BC-900 is a good charger, but the C9000 is all-around better; no goofy key sequences, more flexible, large and legible display, very reliable.
Customer Review: Beats Duracell Pre-Charged and Rayovac Hybrid
Summary: 5 Stars
I recently bought Duracell Pre-Charged and Rayovac Hybrid batteries from Wal-Mart. I fell in love with these batteries because they do not lose their charge quickly like other rechargeable batteries, but when I went back to Wal-Mart to buy more, they apparently decided to discontinue offering them. So I searched the internet and found that Eneloop was apparently the original "hybrid" or "Pre-Charged" battery, so I decided to give them a try. I fully charged the Duracells, Rayovacs, and Eneloops and I put them in the same same exact flashlight model and I tested them. The Eneloops lasted much longer than either the Duracell or the Rayovacs, so I have decided to replace all my old rechargeable batteries with Eneloops. I feel that Wal-Mart has missed the mark by apparently discontinuing to offer this new class of batteries. Oh well, their loss. I actually found a better battery at Amazon . . . the Eneloop. You had better watch out Wal-Mart! With the high price of gas, maybe everyone will be buying these batteries from Amazon because of the free shipping. Exxon and Texaco had better watch out too. Not only will we be driving less, but if we can find a way to run our cars on these batteries, they will be losing even more business. Don't laugh. It costs only $3.00 to charge a Tesla Roadster. It goes 0 to 60 mph in about 4 seconds and it runs on battery power without a drop of gas. It is time for companies like Amazon and Google to take charge of America's future! The old way of doing business in this country is over! If traditional companies will not embrace new technologies like the eneloop, then it is time for other companies to take over. Perhaps in the next few years, these batteries will be re-charged by power generated from the sun, wind, and water. Plug-in hybrids like the Chevy Volt could make the gasoline powered Toyota Prius obsolete. I guess you get the point. I really like these batteries and what they could possibly do for our future. Buy them from Amazon. You won't regret it.Customer Review: The perfect battery for remote controls
Summary: 5 Stars
The eneloop batteries offer longterm charge retention but lack the high current operation of conventional nimh cells (which is why the conventional nimh cells are still made). I looked for something that I seldom change out the batteries on (my remote controls) and bought eneloop AAA size batteries for them. The result was exceptional - no longer did I have to change batteries in the remote because the battery self-discharge drained it - but rather because I got the value of the power stored in the battery by the remote controls' low power draw and intermittant duty cycle. My programmable remote has a backlit screen which I no longer feel guilty about using since the eneloop cells are in it. Previously with conventional nimh cells it had to be recharged monthly - now it is on a 3 month recharge cycle, a big improvement.
Eneloops are not for everything (power tools, for example, perform poorly on this technology) but matching the load to the battery gives excellent results and cuts down on the time between recharges. I'm very happy using eneloops in this particular application, but would not use them in high current applications (e.g. SLR flash which draws 2-4 C rates runs best off conventional nimh Sanyo 2,700 mAh AA NiMH Rechargeable Batteries (4-Pack)). Best news is both types of cell can be charged in the same charger, although I charge the eneloops at a low [200 ma] rate while the 2700 can safely be charged at [500-1000 ma] rates and still get a full charge. I've purchased the eneloop in both AA and AAA sizes for any product that needs to have a long term charge stored in it and does not drain the battery at high rates.
Customer Review: Savor Energy with this energy saver
Summary: 5 Stars
Rechargeable batteries are so cheap to recharge that your first cost is virtually your last cost. The problem, historically, has been that self-discharge results in the charge energy dissipating while the battery sits on the shelf or in an unused flashlight, GPS, camera or other device. Woe, the poor user, reaching for the flashlight on a dark evening or intent on a priceless photo opportunity, when discovering that there was little or no charge in the essential energy supply.
Enter the Sanyo Eneloop!! (Shining "armor" to bathe your night!)
I've suffered the NiCd batteries' woes (self-discharge and "memory").
I've suffered previous NiMh batteries' woes (self-discharge).
For a number of years, the Sanyo Eneloop has been my energy saver; The charge energy put in is still there, even months later. The previous argument for not using rechargeables (they are dead when you need them) evaporates with the Eneloop performance.
And, sure, there are NiMh batteries with higher spec'ed capacities but, in my book, 85% of a 750 mA-Hr (AAA's) capacity is worth a lot more than 5-10% of 1000 mA-Hr when you go to use a battery 6-8 months after it has been charged.
I slow-charge (200 mA) my Eneloops (although I am sure that faster charges are not overly harmful) and have been using the AAA and AA sizes with great satisfaction, success, and great economy. There is now little reason to use any other. Considering that first cost is last cost (virtually "free" charges), even "economy" dictates no other choice.
Be kind to the environment and to your wallet by using these rechargeable batteries.
Customer Review: GREAT batteries for slow-drain devices.
Summary: 5 Stars
I'm not an expert or battery afficionado like NLee the Engineer (whose reviews on batteries and charging accessories have been surprisingly useful to me!), but even the layperson can appreciate Sanyo Eneloop batteries. In short -- great purchase for use with slow-drain devices. Details below:
I've used the Energizer NiMH rechargeables for several years now -- in my Xbox controllers, remote control, mouse, keyboard, some flashlights... and so on.
I noticed that in some devices they were great, but that in low-drain ones like my remote control or mouse I was recharging way too frequently -- once every month or two. Some research revealed that typical NiMH batteries have great capacity, but lose a lot of their charge after they sit around for a while (1-3 months will kill a lot of the charge in the battery, even if it's not being used).
This wouldn't be too much of a problem except for the fact that NiMH cells only have a native voltage of 1.2v -- already low for some devices. Combine the lower voltage with charge that dips over time and you have a shorter than reasonable lifespan.
Enter eneloop batteries!
I started off with I think 8 AA cells and have now expanded to 16 AA and 8 AAA eneloop cells. I use them in my mouse, remote control, keyboard, and Xbox 360 controllers. They're great and last just as long as normal alkaline cells! Definitely a worthy purchase for those frustrated by frequently switching out their normal NiMH cells in low-drain devices. Now, I use my normal NiMH cells in high-drain devices like flashlights and let me eneloops do the long-life work in my low-drain devices.