I have had this problem with every bluetooth beats product I've had for the past couple of years. It ***** cause there are few headphones that match the powerbeats for working out. After going through the warranty process a couple of times and paying fees due to expired warranties, I recently decided to move to Bose. I was still ****** that I had a few unusable pairs of beats lying around due to the dead batteries. I did some research and apparently lithium batteries can benefit or be "boosted" by cold temperatures. I put 2 sets of dead beats (power beats wireless 3 + solo wireless 2) in the freezer for a couple of days and when I took them out they both started to blink. I plugged them in to charge them and they both charged to 100%. As I write this, I'm using the pair of power beats 3 that I didn't feel like paying the $115 repair fee to have replaced while only receiving a 90 day warranty. Now that the beats are working I kinda feel like I wasted my money on the Bose. I can't say that this is a true solution to this issue as its only been a few days, so I won't be returning the new ones. I know how frustrating this issue can be, hope this helps!