I noticed the uneven charge right out of the box. I didn't pay it much mind and plugged them in over night. All good the next day with limited use, music mostly. Then I went for a run and while listening to music from my phone, the left would go in and out. I switched to playing music from my watch and it wasn't much better. Reset everything and next day all was right again audio wise, but i noticed the battery draining unevenly. I was busy, so did not use them again until the following day. Back on the road again for a run and the left flat out died within 30 minutes. I didn't not check the charge, but they were plugged in all night. Next day, I returned them. I would have taken an exchange, but the store was so busy, they didn't even ask, they just processed the refund. It was black Friday. I will keep an eye out on this thread and would consider them again if the issues are resolved.