ResMed Compact Bilevel Device VPAP Auto - Manual (Page 8)

ResMed Corp Poway, CA, USA +1 858 746 2400 or 1 800 424 0737 (toll free), ResMed Ltd Bella
Vista, NSW, Australia, +61 (2) 8884 1000 or 1 800 658 189 (toll free). Offices in Austria, Brazil,
China, Finland, France, Germany, Hong Kong, India, Japan, Malaysia, Netherlands, New Zealand,
Norway, Singapore, Spain, Sweden, Switzerland, United Kingdom (see website for details).
AutoSet, HumidAire and VPAP Auto are trademarks of ResMed Ltd and AutoSet, HumidAire and
VPAP are registered in the US Patent and Trademark Office. Specifications may change without
notice. ©2008 ResMed Ltd. 268159/1 08 01
Global leaders in sleep and respiratory medicine www.resmed.com
Calculate your battery requirements
1. Inverter or converter?
Using a HumidAire 3i with VPAP Auto:
Yes
Inverter only
No Converter or inverter
2. What is my VPAP Auto’s current draw?
Table B shows the current draw with a 12V battery.
The current draw is halved with a 24V battery.
(VAuto) AutoSet Pressure: ...... cm H
2
O
(VAuto) Pressure Support: ...... cm H
2
O
Current draw: ...... amps
3. VPAP Auto used for .... ...... hours
4. Battery capacity
Use your values from (2) and (3) to calculate:
...... amps x ........ hours x 1.5 = ...... amp-hours
(Current x usage hours x safety margin)
This ‘amp-hours’ value is the battery capacity we
recommend to run your VPAP Auto.
Need further information?
If you would like more information about
powering your VPAP Auto with a battery,
please contact your ResMed representative.
268159 VPAP Auto battery guide.qxp 7/12/2007 6:29 PM Page 2