is battery dead?

On Sun, 29 Mar 2015 16:54:27 -0700, "Gene E. Bloch"
wrote:

On Sun, 29 Mar 2015 18:10:50 +0100, Scott wrote:

Batteries are a bit of a mystery. The electric shaver runs for ages
but the electric toothbrush needs charging every few days.

Just for fun: I got my two electric shavers out to let a cut that didn't
like safety razors heal.

The Panasonic was dead and the Norelco (Philips) worked fine. There was
no significant difference between the dates of last charge, just a
difference in retention.

Mine is indeed Philips.

On Mon, 30 Mar 2015 18:36:55 +0100, Scott wrote:

On Sun, 29 Mar 2015 16:54:27 -0700, "Gene E. Bloch"
wrote:

On Sun, 29 Mar 2015 18:10:50 +0100, Scott wrote:

Batteries are a bit of a mystery. The electric shaver runs for ages
but the electric toothbrush needs charging every few days.

Just for fun: I got my two electric shavers out to let a cut that didn't
like safety razors heal.

The Panasonic was dead and the Norelco (Philips) worked fine. There was
no significant difference between the dates of last charge, just a
difference in retention.

Mine is indeed Philips.

But I neglected to add that the Philips did take a charge with no
problem, so I gave an unfair impression.

I just meant that it had no charge when I first took it out to use it.

--
Gene E. Bloch (Stumbling Bloch)

On Sun, 29 Mar 2015 18:10:50 +0100, Scott wrote:

Batteries are a bit of a mystery.

Is it true that a Li-ion battery should never be allowed to run the
charge down to 5% ? And so a battery received from a seller showing
zero charge is likely damaged?