Eneloop
Japanese rechargeable batteries brand / From Wikipedia, the free encyclopedia
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Eneloop (Japanese: エネループ, Hepburn: Enerūpu) (stylized as eneloop) is a brand of 1.2-volt low self-discharge nickel–metal hydride (NiMH) rechargeable batteries and accessories developed by Sanyo[1] and introduced in 2005. Panasonic acquired a majority stake in Sanyo in 2009, and Eneloop batteries were thereafter branded, but not manufactured, by Panasonic.
Product type | Rechargable battery |
---|---|
Owner | Panasonic |
Produced by | Panasonic |
Country | Japan |
Introduced | November 2005 |
Markets | Worldwide |
Previous owners | Sanyo |
Website | eneloop |
Eneloop cells lose their charge much more slowly than the 0.5–4% per day loss of previously available NiMH batteries, retaining about 85% of their charge for a year after charging;[2] This allows them to be sold precharged. Since then many other makes of NiMH batteries are supplied precharged, with long charge retention.[3]
Since Sanyo introduced the Eneloop, many other brands of low-self-discharge batteries became available, described as "low self-discharge","LSD", "pre-charged", or similar. By 2020 most NiMH batteries available were of this type, with varying capacity, self-discharge rate, and lifespan. Those made in Japan are all made in the same factory, but not necessarily to the same specification as the Eneloop brand.[4] There are also counterfeits of Eneloop and other well-regarded brands.
Because they can replace a large number of alkaline batteries over their life cycle, Eneloops are marketed as being eco-friendly.