The battery does not engage in the charger and can be somewhat back and forth and thus there is a risk of contact failure in Pentax charger so that the battery is not charging properly. The next day the battery could not be charged, therefore, when you need him, although it is thought that the battery is charging overnight. One might perhaps with a folded piece of paper will help to fix the battery, but actually I do not want that. I already have a third-party battery that fits perfectly and does not wobble in the charger. Therefore, the battery goes back. I have not used the battery pack, so I can not rate it too.
