I had looked everywhere for this and finally found it here. Thanks!
Posted by Kessenwt
This battery was claimed to be compatible with the Pentax X-90. But there is a reason why the Pentax batteries are much more expensive. With this Lenmar battery, the camera software frequently locks up -- the battery does not deliver sufficient power. The lifetime per charge is much shorter than with the original Pentax battery. I guess it is clearly a case of "you get what you pay for". Maybe it would work better on other models of camera, but my suggestion is "Buyer beware".
Posted by snappyphoto
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.