I've just tried changing battery brands, from Energizer to Duracell. The Duracells lasted two weeks before showing half-full, and are going on charge now. The Energizers I replaced then with had been fully charged two weeks ago, and immediately showed only half-full! I come to the conclusion that, whereas John reckoned two weeks, my experience is one week is about as long as I can rely on them to hold a charge. It could be my charger's crap, so I may have to get a more powerful/reliable unit. I recall mention of a LaCie charger being well thought of: I'll have to see if they are available in Oz.
John Coyle Brisbane, Australia ----- Original Message ----- From: "John Francis" <[EMAIL PROTECTED]> To: "Pentax List" <[email protected]> Sent: Sunday, June 25, 2006 12:05 PM Subject: Further research on NiMH batteries in the *ist-D > > A few weeks ago I encountered some of the odd *ist-D behaviour > others have reported - batteries suddenly reporting 'no charge', > but working just fine after switching the camera off & back on. > Since then I've been doing a little more research, and this is > what I've found out to date. > > First, as has been mentioned before, it pretty much only seems > to be a problem if you have batteries in both the camera and > the grip; removing either set of batteries seems to eliminate > the problem. > > Secondly, it appears to depend very much on the variation in > state of charge of the batteries. If, as is my usual custom, > I charge up all the batteries the night before I'm unlikely > to have problems. Admittedly now I'm using 2500 mAh cells, > and have switched from microdrives to solid state CF cards, > it takes a lot of exposures before I put a noticeable drain > on a set of batteries, although auto-focus can take a toll. > But I do see the problem a lot more now than I used to; I'm > forced to the conclusion that the 2500 mAh Energizers that > I'm using now have a much faster internal discharge rate > than the 1600 or 1800 mAh RayOVacs I was using last year. > And that seems to be the big difference - with the RayOVacs > I could pick up the camera after not using it for a month > and expect there to be a usable amount of charge in the > batteries. With the Energizers, though, going much beyond > a couple of weeks seems to be inviting trouble. > > > > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
