AA Holder for K-r Available
Make your pick: AA's or Li-Ion for your DSLR
By PF Staff in Product Updates on Feb 2, 2011
The Pentax Battery Holder BH-109 for the K-r looks like it's started becoming available from trusted retailers.
This genuine adapter allows you to also use AA batteries in your K-r camera, which natively uses a rechargeable Li-ion battery out of the box.
See this thread for details on where the adapter is available. Its MSRP is $39.95.