Not exactly. After moving the books over I unmounted the reader but didn't unplug it. It was connected to power the whole time. After it was unmounted and it came back to the home screen, that's when the battery was half drained. This all happened while it was plugged in.
Are you suggesting one of the books currently on the reader has some kind of issue that is causing this? I've added books plenty of times, including a HUGE batch when I initially loaded it, and never seen any impact on the battery. When it's plugged in, it's plugged into a power source, so I wouldn't expect any drain whatsoever from adding books.
I could do a complete epub to epub conversion and then reload the reader again from fresh, maybe even a total restore, but hate to go that route if there's a simpler way to identify the culprit.
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