I said “service” not necessarily under warranty.
IF I used a battery block, I’d connect it with the supplied cable. Can’t imagine any way they could tell that from any other 5V source.
No plans to use that aux power unless the battery dies, and if it craps I’ll send it back for service and pay if I have to.
Meanwhile, I’ll borrow gnoahhh’s ballistic pendulum to tide me over.
