Why does the right speaker disconnect on my Volkano brand wireless earbuds?

  I have a pair of Volkano brand wireless bluetooth earbuds. They connect to my phone just fine. After about 5min the right speaker beeps, saying the battery is low, and then turns off leaving the left one on and playing while the right side is off. The same thing happens with every device it is connected to, old or new . 

  It doesn't matter if the earbuds are fully charged or not, it keeps happening every single time. I have tried repairing them to my device, turning bluetooth off and on, and turning off bluetooth then restarting my phone, still the same thing happens. Does anyone know of a way I can fix this issue?