Hello, i've just bought a Chromebook Go. It works fine -since a month-, but this evening it was turned off (not in stand-by mode) and with the cover opened (the camera was covered) it has made three beeps. i've thought it could be a low battery advice, so I've turned it on for checking and i've found it was still at 22/24%. The three beeps wasn't high pitched but in a medium tone (i say this because PC's buzzers has are high pitched and signal something wrong).
I can't find any documentation about this online, nor in the manual, so i'd like to understand what is happening.