9 reasons why you should consider using eneloop batteries
Reason 1: Save money
You don`t have to keep buying new batteries
Eneloop standard model batteries were introduced in 2005 with a claimed 1000 cycle life. The latest standard models can be charged up to 2100 times. Imagine that you have to buy 2100 Alkaline batteries.
In comparison with cheaper quality rechargeable batteries
One negative aspect that people sometimes bring up is the higher price for eneloops. This is partly true, but you really have to see this as a micro investment. You are better off having good quality batteries that can be charged over and over again.
When you compare them to lower quality, and usually cheaper batteries, you will notice the following: Low quality cells lose their capacity faster. They don`t track very well, so mismatched capacity often occurs when batteries are used in series. Eneloop track very well. And often cheap batteries just die.
This means you`ll have to replace them at some time while eneloop batteries would live a much longer life, and therefore are definitely worth the money.
Leaking Alkaline battery?
Probably everybody on this planet that reads this website has most likely come across a leaking Alkaline battery. And very often this results in devices being ruined for good.
How much does it cost to replace that device?
And how much time would you spend on replacing it?
Save yourself this headache by staying away from Alkaline batteries in most devices.
My advice is to not use Alkaline cells in:
- Expensive devices
- Anything inside your emergency kit/ survival kit
- Anything that stays in a car, truck or other vehicle
- Anything that stays in rooms or places with great variety of temperatures
- Anything that mentions in its manual to not use Alkaline /primary cells
- Anything that will be stored away for a longer period of time
That will all Save you money in the long run by using eneloop batteries.
Reason 2: Green energy and Environmental friendly
Charged by Solar Energy
Since 2010 Eneloop batteries are being charged by Solar Energy, before being shipped worldwide.
Unfortunately many people still throw away non-rechargeable batteries in the wrong recycle bin, not even mentioning the times that they don`t throw them in a bin at all.
This is useless waste. Every Alkaline battery needs to be recycled after being used only once. And by not buying Alkaline batteries you are also saving on natural resources.
According to the EPBA about 10 billion batteries had been placed on the EU market in 2015. See page 4 of this PDF. With a collection rate of 40%. Imagine the amount of waste this produces every year, and how much YOU can help by using eneloop batteries.
Reason 3: Extensively tested by many
In case of using batteries in high powered flashlights as well as low powered flashlights these loops have stand the test!
Eneloop have a very slow discharge rate, which means that people who don`t use their flashlight that often have a huge advantage over regular NiMH batteries because even after a couple of years the batteries will still have enough charge left to use the flashlight instantly without having to recharge the batteries first.
If you google for "Leaked battery inside flashlight" you will get about 400,000 hits. So many people have ruined their flashlights by leaking alkalines.
Digital camera Strobe users
Flashes used on digital DSLRs need a lot of power to recycle between the burst of their flash. How lower power how longer it takes to "charge" the flash before it can fire again. Eneloops have proven to withstand this very well. Another great thing is that so many digital camera users have gotten to know about eneloops that many swear by them. You can use them right of their package, and you don`t have to charge them up before using. There have been many tests that involved eneloop batteries.
Reason 4: Powerful and long lasting
Things like flashlights (or torches in B.E.) with high lumens and high Amps will give (rechargeable) batteries a really tough time.
Alkaline batteries normally drop significantly in power till they are at a certain voltage and shut off the light. In some flashlights Alkaline can do very well at very low current, but never at high current.
Eneloops on the other hands can keep a high current for a long time. Much, much longer than Alkalines.
See the Test Page for more comparisons.
Especially from 2006-2013 there were not many batteries sold by other brands (but sanyo) that could come close to the performance both on the LSD side as well as the performance side. Why I say 2013... well, you will be able to find an answer to that question somewhere on my website!
There are many examples on the internet of people that use eneloop standard model batteries for more than 5 years that still work well. While only having lost a small % of their initial capacity in some cases. In other cases they are still doing as well as on day 1.
Me, for example, had received a dozen of rechargeable batteries (a few weeks ago) that I got from a friend to revive them, but to no avail. I only got 4 batteries back to life. The others were impossible to give another chance in life 🙁
And the ones that were revived had a large difference of capacity among them.
Reason 5: Ready to use
NiCad cells have been around for a very long time. They can be very robust, that`s why you see them a lot in Power Tools. But they need a special treatment to keep them strong.
The regular AA size NiCD batteries bought in a store need to be charged right out of the package before their first use. They are usually empty.
Eneloops on the other hand can be used right out of their package. They are being shipped with a 70% charge. So, Yes, you can use them straight out of their package if you want.
Reason 6: Low Self Discharge (LSD)
Every battery on the planet has a problem. This is called Self Discharge. Batteries can not keep a 100% capacity, even when they are fully charged and not being used!
Things get even worse when a battery has been discharged and charged numerous times. Their self discharge only gets worse and worse.
Another factor is temperature. A high temperature would cause a faster decrease of capacity.
And an ice-cold environment would damage some cells and have the same effect, a faster discharge.
Of course some types of batteries have a slower discharge than others. So it is never a good idea to keep a pile of Alkaline batteries in stock for more than 5 years for example. By that time some probably would have died anyhow.
In 2005 Sanyo announced the eneloop battery. This battery has a very slow self discharge. It would lose only about 30% capacity in 1 year.
That means when a battery is fully charged with a total capacity of 1,900 mAh, after 1 year the battery would have lost 30% of their initial capacity, and still provide more than 1,300 mAh.
Now more than 10 years later they have improved it continuously. Their latest AA standard model has now a Self Discharge of only 30% in 10 years. That is incredible!
That`s why they are called Low Self Discharge batteries.
Reason 7: Unique design
White and Blue
The first ever produced eneloops were simply white with blue letters.
Once you had seen them, you wouldn`t easily forget them.
Other brands tried to stand out with bright colored packages, with large text: High Power, Extreme, Long Lasting, Super ,Power, Ultra and other so to call exaggerations.
Eneloop on the other hand kept it simplistic, which is a very common Japanese principal. In Japan they like to keep things in balance.
In 2009 Sanyo produced their first of a kind limited edition batteries. They used a unique colored wrapper for each battery. This really set them apart from other brands on the market.
These are all standard models, except their outside changed a bit.
Since 2009 Sanyo and Panasonic produced about 20+ different kinds of special editions. Most of them being made in Japan, and some made in China. See my page with the different kinds of special battery wrappers.
When you buy multiple packs of the same limited editions you can put the same color batteries together to always stay together when used in certain applications.
This is a GREAT way to distinguish which battery belongs to which device.
3 model types with each their own unique color
Continuing this simplistic design that set them apart from the rest of the bunch, in 2010 they designed the Lite and Pro models. Both of them having again unique colors. Lite models received a virgin blue color, while the PRO version (named eneloop XX in the western world) were black.
Reason 8: different models for different applications
Standard eneloop batteries have a capacity of 1,900 mAh for AA and 750mAh for AAA respectively. Both can be used in many different applications, from low current to high current.
The lite AA models batteries have a capacity of 950mAh and 500mAh for AAA. They are great for lower current devices like remote controls, clocks, and DECT phones. And I use them in my kids toys as well because they can take a beating.
The Pro AA models have a capacity of about 2550 mAh and 930mAh for AAA. Mainly used in high drain applications like Camera strobes and Flashlights, but I can also imagine them being used in radios and such. They do not fare well in applications with a constant charge current or high temperature.
So every application requires a different model. Each with its pros and cons, while you almost never can go wrong with the Standard model if you can`t decide which is best for you.
Reason 9: No headaches!
This is one of the most important reasons for me to stick with eneloops!
On the forums I visit I often see people asking the question: Are .... batteries any good? They saw some cheap batteries at Harbor Freight, Wallmart, BestBuy, Lidl, Aldi or whatever shop and are drawn to them for whatever reason.
If you are a hobbyist, and like to test batteries for fun go ahead and buy the cheaper cells and do your testing.
For people who DON`T want to go through all these tests, just buy eneloops and STOP worrying if you have good batteries and if they keep their charge and if they can handle low temperatures etc.
Eneloop batteries are around for more than 10 years and have proven over and over again that they are well worth the extra little investment! They will pay you back, both in time, money and less stress!