This larger battery for the Petzl Ultra headlamp will be available again towards the end of the year. You may remember that the Petzl Ultra Belt was due to be released with this larger battery but it never happened because the battery failed the drop test and Uniross went bust, now Petzl have solved both problems and the new larger battery will soon be available. We will let you know as soon as we have them and when we know which battery the Ultra Belt will then come with.