Contemplating on returning the Kx due to battery issues.
Search Ricehigh's Blog he's done some testing on batteries and chargers.
The problem could be your charger.
Half Man... Half Pentax ... Half Cucumber
Pentax K-1 + K-5 and some other stuff
Algi
http://www.pentax.co.uk/en/Photo_Downloads.html
Someone from your attached blog had mentioned about the firmaware as well. Good luck!
Leon
K-x, K100D, DAL 18-55, DAL 50-200mm, Tamron 70-300Di, SMC M28/2.8
The Ansmann unit charges each cell according to it's needs. Many 'timed' chargers charge in pairs, both at the same rate, which doesn't make much sense if you happened to put in one partially depleted, and one totally depleted battery.
Peter E Smith
My flickr Photostream
The Lithium AAs (disposable) that came with my Kx lasted over 800 shots.
My current Eneloops will do 400.
Anything less than that will likely be due to your charger (unless you use your onboard flash a lot).
http://www.pbase.com/iberg
ElRazur
Member
A few number of people complaining about battery issues. . .
http://nedbunnell.blogspot.com/2009/10/k-x-battery-notes.html