A pair of R-CR-V3's worked very well but, freshly charged, they could
deliver 7.4V which apparently fried the camera electronics in some
cases. This led to the Pentax warning. Nevertheless, many 1stD & K100D
owners still used them successfully without incident. A workaround was a
single R-CR-V3 with a pair of R-AA's which gave a "safe" max. starting
voltage of about 6.5. I did this successfully for some years with my
K110D - still do occasionally. I had one set in the camera & another on
charge. The problem with 4 R-AA's is that the starting voltage is only
5.6 and it doesn't take long to get to the cut-off of 4.8V. Not too long
ago, KENTLI introduced Li-ion's in AA format with circuitry to limit
them to 1.5V. I have no experience of those but if the underlying
starting voltage of each is 3.7V (limited to 1.5V) they should last for
ages.
Alan C
On 13-May-19 09:34 PM, Mark Roberts wrote:
John wrote:
On 5/13/2019 12:15:59, Igor PDML-StR wrote:
I think using new, _non-standard_ format of batteries for [almost] every new
model is a crime against humanity.
I am glad that almost all DSLRs (except the first 2 or 3?) from Pentax are at
least using the same battery format.
Those 2CR5's were a pain. I was glad that *istDS could take AA's as well.
I had 2CR5 as an emergency spare in the bag, but I was using AA's most of the
time.
The *ist-D used a CR-V3 battery OR standard AA batteries (including
rechargeables), although my experience was you got more endurance from the CR-V3
than from the AA batteries.
I don't remember being able to find any rechargeable CR-V3 batteries while I was
using the *ist-D, and lithium AA batteries didn't become widely available until
later.
Pentax didn't recommend rechargeable CR-V3 batteries for use in the
ist-D for some reason. But Don Nelson, Pentax rep and friend of the
PDML always used the rechargeable CR-V3's in his ist-D and never had a
problem.
--
PDML Pentax-Discuss Mail List
[email protected]
http://pdml.net/mailman/listinfo/pdml_pdml.net
to UNSUBSCRIBE from the PDML, please visit the link directly above and follow
the directions.
