I wired in a dc connection and plugged it into a battery. Works properly.
Connected in the wired AC adapted dc connection (with the 4 ports), while the battery was active. no issue.
disconnected the AC adapted connection, and the battery persisted with the current.
reconnected AC and disconnected the battery. no issue.
Was I just lucky i didnt cause a problem or were these designed this way?
Fantastic feature if so.