I am technical superitendebt of Tsakos Columbia ShipManagemet of vessel MT World Harmony. We face a big problem with the Battery charger unit which is equipped by your Conpany. How can I come in communicate by email with your good company, for remote troubleshooting and spares in case is needed. Your prompt reply is highly required. Already we came in contact with Hyundai without any reply. Our system is:model: SU-BC-2005BS