I will caution you that cheap-o inverters have, and
probably any inverter with an undervoltage cutout
function will, damage electronics. I had a laptop with
tuner cable running on a vehicle with a weak alternator,
the inverter began flickering in and out of operation,
and I was minus one serial port.
Be sure your system voltage stays well above the
low voltage cutoff.
I will caution you that cheap-o inverters have, and
probably any inverter with an undervoltage cutout
function will, damage electronics. I had a laptop with
tuner cable running on a vehicle with a weak alternator,
the inverter began flickering in and out of operation,
and I was minus one serial port.
Be sure your system voltage stays well above the
low voltage cutoff.