Please refer to the VPAP III Series Battery Power Guide for the recommended battery type and capacity, or contact ResMed's Technical Services division for your specific application.
ResMed DC-24/30 Converter
ResMed supplies the DC-24/30 Converter (product code: 22015) which is compatible with the DC input of the VPAP III ST-A. This is an accessory that may be purchased separately through your ResMed distributor.
The DC-24/30 Converter can be connected to a 12V or 24V battery, or a cigarette lighter socket (in a vehicle). When using a DC power supply, the power is turned on and off via the switch on the converter, and not the power switch at the back of the VPAP III ST-A. No power will be supplied to the HumidAire 2i integrated humidifier when connected to a VPAP III ST-A using a converter.
Please refer to the DC-24/30 Converter instructions for further details.
Inverter or UPS
The power specifications for an inverter or a UPS are listed in the following table.
Configuration
VPAP III ST-A (without HumidAire 2i humidifier)
Continuous Output | Peak Output |
Power Rating | Power Rating |
60W | 225W |
VPAP III ST-A with HumidAire 2i | 150W | 300W (110V inverter) |
humidifier | | 600W (240V inverter) |
Note: Use only a pure sine wave inverter when a HumidAire 2i is attached.
The case temperature should be less than 50°C at an ambient temperature of 35°C. (For VPAP III ST-A temperature specifications, see “System Specifications” on page 37.)
