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krw

In article ,
says...
Keith Williams wrote in
T:

In article .com,
says...
1) Pulse charge and it will return to full energy if it is
still in infancy .

Never deep cycle any battery . Batterys die for being NOT fully
charged . Leave them discharged is to shorten life .

Nonsense. NiCDs and NiMH batteries love to be discharged.

Agreed.

That's
the only way to store them for long periods.

That's wrong.
They should be stored CHARGED.
Do you have any cites for your claim?

Yes, Gates' secondary battery manual. The chemical reaction stops
with zero terminal voltage. They store quite nicely that way. In
any case, they *will* self discharge and the worse thing possible
for a NiCd or NiMH is to float charge it. THis is exactly the
opposite as is the situation for Lead-acid cells.

Don't "reverse
charge" cell(s) in a multi-cell battery by discharging it below
about 1V/cell though. They can be left to self discharge without
damage. A single cell battery can be discharged to zero.

OTOH, lead-acid batteries must never be fully discharged and must
be stored with a float charge. Lead-acid batteries are thus better
for things like flashlights, UPSs, safety lighting, and such.

----------------
2) NimH and Nicad lose 10% in 1 day , Li-Ion lose 1% .

Not any more. NiCds may be 20% per month, usually less.

NiCd Figures I've seen are ~5% self-discharge/day.
Storage temperature greatly affects this.

Nonsense. They do *not* self discharge totally in a month.
....more like 20% a month. Classically NiMH self-discharges at
about twice the rate of NiCD, but AIUI they've gotten much closer.

--
Keith