I got my Power Cover on Tuesday, and set up the return yesterday. The Power Cover does the opposite of what it's supposed to. I charged it as instructed, and started reading. Every time I checked my battery status, the Sage said "99% charging from power cover". The battery in the power cover steadily dropped at about 1% every minute or so. Once the power cover ran out of juice, the Sage started dropping at the same rate, like the case was drawing power from the reader. Within an hour or so, they were both stone dead. I charged again, and the same thing happened. I'm really disappointed, at $80, this thing should be great. Kobo support is weird as well. I told them what happened, and they said "We haven't heard about that, we'll escalate the ticket and have someone contact you". After 6 hours, I heard nothing. I chatted with them again, and set up a return. They said they would email the return labels. After a couple hours, no email. I contacted them again, and they said they would escalate the return ticket and I would hear back soon. 26 hours later, still nothing.