Sirius F9P does not charge batteries & does not find satellites

Hi. I just bought a Sirius RTK GNSS Base F9P. I left the module charging for a number of hours but batteries do not charge. It just shows the power on red led but nothing more. At one point after charging, this red led starts blinking but there is no charge in the batteries because it refuses to power on unless connected via a USB to laptop.
Furthermore, even after manual calibration via u-center software, the module does not find satellites. I left it for half an hour searching, but nothing :frowning: