On Sun, 20 Jan 2019 14:57:16 -0500, nospam
wrote:

In article ,
newshound wrote:

Before getting the X-T3 plus grip I used to number my batteries so that
I used them in order, discharging them fully before changing and then
recharging. In a relatively modest session today I took one of the grip
batteries into the red, and took a bit out of the camera battery which I
recharged via USB after downloading. I've got the grip on charge with
its dedicated charger now. Am I likely to shorten the life of batteries
by doing this?

discharging them fully is a very bad idea, although they're cheap
enough to where it's not worth worrying about.

I was probably not very clear. I meant removing them when the camera
stops working, I'd hope modern cameras stop at an appropriate point.

i didn't mean discharge to zero, and they do stop ahead of that.

the point is that lion batteries will last longer with many partial
discharges than fewer deep discharges.

I have recently read, in conjunction with suspected battery problems
on a third generation iPad, that it is desirable to discharge to zero
once a month or so. The explanation is that it allows battery
management system in the iPad to recalibrate itself. The explanatikon
was minimal and I didn't understand it. Does it make sense, even if
only in terms of iPads?

I
didn't mean discharging totally against a resistance, as we used to do
for NiCad batteries to avoid memory effect.

that is also a bad idea and there is no memory effect, at least the way
people think of it. the problem was mainly overcharging due to ****ty
chargers that didn't detect eoc.

I agree they are not a major item of expenditure, it's just the engineer
in me that wants to be efficient.

don't try to outguess the engineers who designed the camera's power
management.

use the batteries normally and don't worry about it.
--

Regards,

Eric Stevens