My first impressions - and some info...

Started Jul 28, 2001 | Discussions thread
talon New Member • Posts: 11
Re: About batteries...

url of 1800 mah batteries

I found out that if you set the D7 to auto switch between the EVF and the LCD, the battery life was drastically reduced. I did not try just the LCD only. Plus the autoswitching is a little annoying. I will either use the LCD or the EVF, exculsivly. My two sets 1800 mah batteries were new and have always been fully charged.


Jim Popenoe wrote:


Any sleuthing your technician can do would help, and many on the
forum would be grateful if you let us know what you discover.
Battery performance is something I want answers about before I
purchase a Dimage 7.

Some D7 owners on the forum say they are doing just fine with NiMH
and getting over 100 photos per set. Others are running out of
juice in 5 minutes or less. I assume everyone (or most everyone)
is being honest. So why the different results?

Some possibilities are 1) different usage patterns, 2) bad
batteries and 3) bad cameras. These are TESTABLE hypotheses (but
not mutually exclusive). Let's hope owners get busy sleuthing and
find their problems. Many people need to be more conservative with
the LCD. A few may have bad batteries and/or bad cameras.

NiMH are supposed to maintain a nearly constant voltage, but if
they have not been properly conditioned and the current load is
high, the voltage may fall below a threshold that the camera cannot
accept. I find that my NiMH batteries are functional much longer
after conditioning in my Maha C204F charger. A voltmeter can be
used during operation to determine voltage output vs. time and
camera load, and to discover the threshold voltage at which the
camera shuts down.

It may be the the heavy load of the D7 brings down the voltage more
than with other cameras, but no one has yet posted data by which to
judge this idea. Specifically, we need to know the current demand
of the D7 by the LCD, by the EVF, by the flash charger, and by the
D7's other electronics before and after power save goes on. Armed
with all of this information, owners can better judge the likely
cause(s) of the power problems they are posting on the forum, and
potential buyers such as me can better decide if the D7 is
inherently flawed or just, so far, poorly understood.


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