I'm not sure how the disconnection works, and i know it disconnects you for even the slightly connection lag, or a sudden drop and back *even if it's for 1 second*. I think you should be able to jump back into your battle if you get back on within the 5 minute timer, and click on a button to get back into it. I hate losing a nice Winning streak (was up to 5 before i got disconnected in battle) because i got dropped from the connection for a second.
