Sony F---- up their NEX but good!!

On 6/21/2011 9:18 PM, RichA wrote:
http://forums.dpreview.com/forums/re...ssage=38707416

I updated my NEX and haven't seen this issue. It seems to disappear when
the user recharges the battery, but I think what's happening is that
some users skipped the last step, which called for the user to remove
the batter to reset the camera. Once they remove it to charge, the
camera resets, and the issue is solved.

Stay tuned.

On Wed, 22 Jun 2011 07:19:07 -0700 (PDT), RichA wrote:
: On Jun 22, 9:29*am, Bowser wrote:
: On 6/21/2011 9:18 PM, RichA wrote:
:
: http://forums.dpreview.com/forums/re...ssage=38707416
:
: I updated my NEX and haven't seen this issue. It seems to disappear when
: the user recharges the battery, but I think what's happening is that
: some users skipped the last step, which called for the user to remove
: the batter to reset the camera. Once they remove it to charge, the
: camera resets, and the issue is solved.
:
: Stay tuned.
:
: Be interesting to know exacly what happens to heat up the camera that
: way. Reminds me of Sony rechargeables I had that used to heat up to
: 60 deg. C when charging.

Perhaps the camera has to refill its heat sink after the upgrade, and doing so
causes the battery to temporarily revert to burst mode. I think I'd worry
about it only if I owned a NEX.

Bob

On Wed, 22 Jun 2011 20:07:55 -0400, John A. wrote:
: On Wed, 22 Jun 2011 07:19:07 -0700 (PDT), RichA
: wrote:
:
: On Jun 22, 9:29*am, Bowser wrote:
: On 6/21/2011 9:18 PM, RichA wrote:
:
: http://forums.dpreview.com/forums/re...ssage=38707416
:
: I updated my NEX and haven't seen this issue. It seems to disappear when
: the user recharges the battery, but I think what's happening is that
: some users skipped the last step, which called for the user to remove
: the batter to reset the camera. Once they remove it to charge, the
: camera resets, and the issue is solved.
:
: Stay tuned.
:
: Be interesting to know exacly what happens to heat up the camera that
: way. Reminds me of Sony rechargeables I had that used to heat up to
: 60 deg. C when charging.
:
: Some time ago I read of research that had discovered a way to make
: rechargeable batteries (lithium ion, I think) that can charge, IIRC,
: about 100x faster. I wonder what heat might result from that. More?
: Less?
:
: (Search... search... search...)
:
: Here's an article on it. Not the one I originally read, but I think it
: covers it.
: http://www.gizmag.com/lithium-ion-ba...ugh-mit/11244/

Batteries come out of Radio Shack's latest AA charger too hot to touch. But
it's faster than any other charger I've ever used.

Bob

On 2011-06-30 22:36 , Robert Coe wrote:

Batteries come out of Radio Shack's latest AA charger too hot to touch. But
it's faster than any other charger I've ever used.

That will most likely short life the batteries.

--
gmail originated posts filtered due to spam.

On Fri, 01 Jul 2011 09:36:08 -0400, Alan Browne
wrote:
: On 2011-06-30 22:36 , Robert Coe wrote:
:
: Batteries come out of Radio Shack's latest AA charger too hot
: to touch. But it's faster than any other charger I've ever used.
:
: That will most likely short life the batteries.

Why? I.e., what's the chemistry and/or physics behind the assertion?

Bob

On 2011-07-01 18:17 , Robert Coe wrote:
On Fri, 01 Jul 2011 09:36:08 -0400, Alan Browne
wrote:
: On 2011-06-30 22:36 , Robert Coe wrote:
:
: Batteries come out of Radio Shack's latest AA charger too hot
: to touch. But it's faster than any other charger I've ever used.
:
: That will most likely short life the batteries.

Why? I.e., what's the chemistry and/or physics behind the assertion?

In the case of almost all batteries, heat is not good for both the
charge at hand and for battery life. You can search around for the reasons.

In the case of Li-ion it increases the chance of thermal runaway leading
to rupture/explosion and fire.

Ni-MH can go to a one time safety failure (pop the end) from
overcharging. As Ni-MH get quite warm in normal charging, I'd imagine
that excessively hot Ni-MH is an indication of possible imminent
hydrogen outgassing - in some cases with enough pressure to pop the
safety off if the internal safety fails.

I've never had trouble with Ni-MH but they do get pretty warm - but not
too warm to handle.
--
gmail originated posts filtered due to spam.

On Fri, 01 Jul 2011 18:37:51 -0400, Alan Browne
wrote:
: On 2011-07-01 18:17 , Robert Coe wrote:
: On Fri, 01 Jul 2011 09:36:08 -0400, Alan Browne
: wrote:
: : On 2011-06-30 22:36 , Robert Coe wrote:
: :
: : Batteries come out of Radio Shack's latest AA charger too hot
: : to touch. But it's faster than any other charger I've ever used.
: :
: : That will most likely short life the batteries.
:
: Why? I.e., what's the chemistry and/or physics behind the assertion?
:
: In the case of almost all batteries, heat is not good for both the
: charge at hand and for battery life. You can search around for the reasons.
:
: In the case of Li-ion it increases the chance of thermal runaway leading
: to rupture/explosion and fire.
:
: Ni-MH can go to a one time safety failure (pop the end) from
: overcharging. As Ni-MH get quite warm in normal charging, I'd imagine
: that excessively hot Ni-MH is an indication of possible imminent
: hydrogen outgassing - in some cases with enough pressure to pop the
: safety off if the internal safety fails.
:
: I've never had trouble with Ni-MH but they do get pretty warm - but not
: too warm to handle.

My charger is an "Enercell". A rather gabby salesman at our local Radio Shack
assured me that it's not a RS house brand, but it's apparently what they sell
(batteries and chargers) these days.

I don't think it overcharges the batteries. If you leave them in the charger
after the "charging" light turns green, they'll cool down. But if you take
them out right away, you'll want to set them down in a hurry.

Interestingly (and annoyingly), that charger won't charge my "Impact"
batteries, which were a B&H house brand when I bought them (and may still be
for all I know). I guess they can't handle the high charging rate. I have an
older, slower Radio Shack brand charger that does charge them.

Bob