I charged it for over 24 hours only to find that one day it ran out of battery life. It worked fine when plugged into a power source, but died as soon as it was unplugged. That's how I noticed that when plugged into a power source, the icon quickly alternated between charging and charging. I decided to open up the controller to "investigate" the issue further, but found that the 2-pin battery connector on the controller was not fully engaged. As soon as I pressed it and heard a click, the battery icon disappeared. from blinking between loading and loading to a solid loading bar. My only regret is that I did not open the controller before contacting Revain support as I was advised to send it in for a defect that turned out to be just a missed quality check. Overall the controller is excellent, feels good in hand and now that I've fixed it it seems to be working as intended. 3/5 stars only because I had to fix it before I could use it. 5/5 stars if it works that way from the start