No transfer to the charger

Actually, the Bluetooth transmitter works after initial pairing problems well. But ... Even though reviewers had indicated that the device is working, when it is operated on the battery charger, which is not the case. I wanted to connect the transmitter to the TV and supply from there via USB. Unfortunately, the transmitter will turn off once the charging function is activated. For my purposes, therefore not usable. As I now know, there is a (higher-priced) successor, which also works, if it is loaded. I'm going to order me now.