I had the same problem with my keychain receiver. Unfortunately, batteries plus didn't have a replacement battery for it. I thought I had solved the problem by charging it off the AC supply rather than the USB port. I found out while waiting for the bus that I was wrong. No charge beyond five minutes. That got me to wondering, can you power the receiver off of one of the apex USB ports in a pinch? I didn't have a cord with me to check. When I got home I threw the receiver in the trash, because I was so disgusted with it. I haven't thrown out the trash, and all that is in there is paper, so rescue is possible.
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