When using a multi-port charger to charge the batteries within the charging case, adding or removing other devices connected to the same charger may result in a disconnection. This occurs because the protocol handshake between the multi-port charger and the charging case may fail during this process, leading to charging anomalies. Therefore, we recommend that you avoid using a multi-port charger to charge the batteries; alternatively, if you do add or remove devices, please unplug and then re-plug the charging cable connected to the case to allow the charger to re-initiate the protocol handshake.