Originally posted by patrick9 The retainer broke 2 years ago 1 month befpre the warranty ran out.
I had the battery retainer on my K30 snap over a year ago I think. For a while, I just lived with it. Then I lost the battery in the field when the door popped open somehow. Miraculously, the battery was eventually found.
My fix: I found a piece of thin, semi-rigid plastic, and cut out a "plate" approximately the size of the bottom of my camera, drilled a hole aligned with the tripod mount, and I hold it in place using my tripod quick release plate. It covers the bottom of the camera, and ensures the battery door will not inadvertently pop open. I can easily rotate the plate out of the way if needed to replace the battery. ( ie. no need to remove the quick release plate to get at the battery )
If you don't like the look of plastic, you can use a piece of thin aluminium.
If you don't have a quick release plate, or don't want it on your camera long term, you can sub a plastic or metal machine screw that will fit the tripod mount hole.