Please keep the Bluetooth transmitter charged by a 5V external charger such as Android power charger (instead of the USB jack of TV) via Micro USB Power Cord for 2~3 hours. We recommend charging the unit for 4 hours before using it for the first time.

Model Working Time Per Full Charge
TT-BA01 Approximately 7 hours
TT-BA10 15 hours (AUX mode) / 12 hours (SPDIF mode)
TT-BA07 Approximately 10 hours
TT-BA08 Approximately 20 hours
TT-BA09 15 hours (AUX mode) / 12 hours (SPDIF mode)
TT-BA11 Approximately 8 hours
TT-BA12 Approximately 8 hours