I have checked the DC-DC Converter and it is outputting 14.3V when the Ready light is on. If the car isn't driven for a few days the battery is drawn down to about 5V. The battery is brand new about 3 weeks ago and I have recharged it with an AGM charger when this happens. According to my DC Clamp meter on the negative cable, the car is completely off, there is about a 2amp draw on the battery. I have pulled the cable from the fuse box for the DC-DC converter and it drops to about 0.4amps. Plugg it back in and it goes right back up. This is with a fully charged battery. Both by an external battery charger and the DC-DC converter with the engine running and monitoring the current draw of about 0.6amps. I need to fix this as the car is driven to work during the week. Is the DC-DC converter a part of the inverter? Can it be replaced by it's self? TIA for all comments and help.