Eneloop101.com is an ENELOOP encyclopedia ~by ChibiM

Eneloop: simply the best!

What do you want to know about eneloops?

Before you are heading to any of the 20 pages I would like to give a short and basic introduction to eneloops.

The Eneloop AA battery was first introduced in November 2005 by Sanyo Japan with nothing less than breathtaking specifications. They were able to be charged 1000 times, (something very unique in those days) and were keeping their charge much longer than any other rechargeable NiMH battery on the market (called Low Self Discharge). Another specification that stood out was that you were able to use them right out of the box. While the traditional rechargeable batteries had to be charged before using, the eneloops were Ready-to-use. They were packed pre-charged at 70% of their max capacity. These are just a few reasons for using eneloops. Their full capacity is min. 1900mAh, and sometimes packages show Typ. 2000 mAh.

Expanded line-up with Lite, Pro and more
In 2007 Sanyo also started producing C and D size batteries. In 2009 their first Eneloop Tones edition came to the market. In 2010 their first Low capacity version, (for low-drain devices) saw the light, and was called Eneloop Lite. It`s capacity was 950 mAh for their AA-size batteries.
In the same year a High capacity model (for high-drain devices) was also produced and was called Eneloop XX/PRO, with a min. capacity of 2400 mAh for their AA`s. In the same year Sanyo officially became a Panasonic company.

For detailed info, product sheets, pdf files go to the

complete overview eneloop batteries 2005-2017

Special editions batteries

Some handsome batteries you got there!

In 2009 Sanyo released their first limited edition eneloops, called Eneloop tones.

In 2010 Sanyo eneloop celebrated their 5th year anniversary with a special edition eneloop, called Eneloop Tones Glitter.  Since then they regularly updated their special edition line-up with many kinds of  wrappers  including Chocolate tones, Forest tones, with the latest additon being the eneloop tones expedition.

For the complete line-up of all 21 special editions go to:

All limited edition eneloop batteries

All chargers 2005-today

Do you know how to charge your eneloop batteries?

Fortunately Sanyo and Panasonic also produced chargers alongside their batteries so that you don`t have to worry about all this charging stuff.
Both, Sanyo and Panasonic made some interesting chargers. The sad thing is that not all of their chargers are good

Some of them charge a pair of batteries for X amount of hours, and then stop. These are sometimes called Dumb chargers...... They are time-based chargers.

Better chargers use more sophisticated technology to measure whether a battery is fully charged or not, and these are referred to as Smart chargers or battery analyzers.
Continue reading about Charging or jump to the overview with all Sanyo and Panasonic battery chargers ever produced.


Eneloop Products

More than just batteries

Sanyo introduced in 2006 the eneloop Universe.
This expanded the concept of eneloop.  It received the 2007 Good Design Award with their intuitive lineup of products.

This included a lamp, portable solar charger, neck warmer, even bicycles and more.

With the official closing of the Sanyo trademark in Japan in March 2012, "eneloop universe" stopped as well. Some products like the mobile boosters were being improved and sold under the Panasonic brand.

Eneloop products (eneloop Universe)


Prototype products

Have you ever seen a eneloop telephone?

Sanyo also designed products that never made it into production. Eneloop collectors should keep an eye out on these products.

Continue reading on my

Sanyo Eneloop prototype products page