If you disconnect the Antara battery for a long period you run the risk
of problems with the electronics when you reconnect it eg
immobiliser, ECU, BCM and Radio codes, especially if there's a voltage
spike. You'd be much safer to leave the battery connected and get one of
those solar battery chargers to keep it charged up. I believe you can
still lock the car with the kry even with the battery connected but save
the alarm drain.
2015 Antara Exclusiv 2.2 163ps Manual 2WD