On Jun 20, 7:44*pm, wrote:
On Mon, 20 Jun 2011 14:07:19 -0700 (PDT), "


Best practice is not always possible - which is why I say better
charged than flat and open circuit - and better flat and open circuit
than flat and shorted for a battery - better flat and shorted for a
single cell.

You don't have to agree with me, but that's what I've always been
taught - and from *what I gather from the very limited information on
the net, nothing has changed my mind.

Long term CELL storage - drained and shorted
Long term BATTERY storage - DO NOT SHORT.
If you cannot store drained and shorted (which is not practical for a
BATTERY of cells,) store charged - and recharge every few months.

As usual, you are free to store YOURS however you want.
And it's a free world - you can agree with me, or you can dissagree
with me.
So far nothing YOU can cite proves me wrong.

At least I've cited multiple credible sources that disagree with
Panasonic. You've cited exactly one source, Panasonic and
choose to rely on that to establish what you call best practice.
And even that one source does not say that not keeping
them charged in storage will lead to damage, shorter life,
etc. It's quite possible it only leads to what some of the
other sources say, which is that if left discharged it will
take several charge/discharge cycles to get them back
to full capacity. That could be behind the Panasonic
recommendation, but we don't know because Panasonic
does not explain what the issue is.

Relying on one source and then claiming that establishes
best practices is a big leap.