Wireless Beats x Keep Disconnecting

Every time I try to connect my wireless beats x they keep disconnecting. I have tried resetting the beats and have forgotten them from my devices and they are still disconnecting. I haven't had this problem before and they are only around 9 months old and are well looked after. Does anyone know how to fix this? or have they just died? Bit of a pain since they where quite expensive paid $199.00 for them and haven't even been used or lasted a year...