A:Answer Here’s what I know... initially these headphones are pretty awesome they seem to hold the charge for the full eight hours. However, one year later, with a full charge as indicated by the blue light and the full icon on your device, the battery life, for me at least was around two as I was at mile 12 at the rock n roll Las Vegas marathon. With more than 13 Miles to go. Heres the love I got from JBL: