You need to wake them up via whatever that process is, described in the user manual. Battery devices will not respond to commands unless they wake up on their own, dictated by the configured wake up interval, or manually woken up. The wake up interval can vary from an hour to a week, depending on the default or how it's been configured.
Perhaps too late for you, but I'll take the opportunity to plug my community guide for switching add-ons which doesn't require any re-interviewing.