9V rechargeable battery with a 1 year charged shelf life?

** The new Sanyo "Eneloop" ( modified NiMH) cells have a very long shelf life - so much so they are sold in fully charged condition !!

No sign of a 9 volt version yet.

Normal NiMH cells have good charge retention, but not comparable with (non rechargeable) alanines like the Energiser ones.

....... Phil

Do rechargable alkaline ones exist? Do you mean a PP3, or some other size?

Yes , PP3.

Do other sizes exist in 9 Volt?

PP9

What voltage do you need in a 9 volt battery. 7.2, 8.4, or 9.6 ?

greg

8.4 and 9.6

Is there _any_ rechargeable battery that will retain a majority of its charge after one year?

Thanks, Rich

Li-ion. NiCd, at lower temperatures. Sodium/sulphur, ...

- Sanyo's "Eneloop," low self-discharge NiMH (already mentioned) - RayOVac's "Hybrid," also a low self-discharge NiMH.

Both advertise ~80% charge retention after 12 months storage at room temp. AFAIK the Eneloops are only available in Ritz Camera; the RayOVacs are at Walmart.

- Lithium ion cells, of all descriptions.

Cheers, James Arthur

9 Volt?

None that I know of. All the neat new NiMH above are strictly AAA- and AA-size. Sorry.

James Arthur

I suggest the 9V lithium blocks if the capacity is enough to avoid rechargable function.

- Henry

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schrieb im Newsbeitrag news: snipped-for-privacy@l39g2000cwd.googlegroups.com...

Thanks for the news, it is better than i expected of NiMH.

--
 JosephKK
 Gegen dummheit kampfen die Gotter Selbst, vergebens.  
  --Schiller

Not per cell, you may want / have to make your own battery pack.

--
 JosephKK
 Gegen dummheit kampfen die Gotter Selbst, vergebens.  
  --Schiller

1=2EModel: 9V Lithium battery 2.Specification 1) Nominal voltage: 10.8V 2) Nom> snipped-for-privacy@aar>

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