[niftyprose]

Hello guys, my first post here. I'm resurrecting this thread after 15 years in case anyone else out there is dealing with the novel PRS505/powerbank issue.

Amazon and other channels are presently shifting a lot of powerbanks, pocket-sized lithium batteries that can recharge mobile phones and other small electronics via USB. I got a Klarus K5, a particularly nice example of the type, for Xmas. I've spent part of the New Year learning how to get the Klarus working harmoniously with solar chargers and a variety of USB-charged electronics in preparation for an upcoming sea trip. My PRS505 was one of the last devices lined up for testing. My first attempt, using the same USB-A-to-Mini cable that I use for loading epubs, went disastrously.

The Sony wouldn't settle properly into charging mode, and alternated between the "USB connected" screen and a main menu display. After disconnecting the Klarus, I saw that the Sony's battery had been nearly drained by the experience. And the reader locked onto its menu screen, so that I had to do a soft reset with a pin to get it to respond properly to the buttons. It looked like the Sony wouldn't be on the trip.

I turned up this page on Google and paid close attention, especially to MSJim's "round plug!" post. Fortunately, I have a round pin adapter set, a cable with a USB-A on one end and a choice of six barrel adapters at the other. I chose the appropriate barrel, plugged the Klarus back into the Sony via the adapter port this time, and crossed my fingers.

Bingo! The Sony charged quickly and efficiently from the Klarus. One less thing to worry about on holiday. "Round plug", indeed. Thanks, guys.