BiXPower CPAP330-AS11B – 322Wh
Rechargeable Backup Battery for
ResMed AirSense 11 CPAP Machines
The BiXPower CPAP330-AS11B
is a high-capacity rechargeable
CPAP battery package designed
for compatible ResMed AirSense 11
CPAP machines.
This complete portable power
system combines a
322Wh BiXPower BX2499
rechargeable battery
with a compact, high-efficiency
regulated 24V DC power
converter specifically
configured for AirSense 11.
It provides a convenient
alternative power source
for home power outages,
camping, emergency backup,
and off-grid CPAP operation.
With heated humidification
turned off, the system may
provide approximately
3–4 nights of operation
under favorable low-power
conditions. Actual runtime
depends on the CPAP machine
and operating settings.
BiXPower CPAP330-AS11B
complete battery power package.
322Wh High Capacity
Extended rechargeable power
for compatible AirSense 11
CPAP machines.
Regulated 24V DC Output
Special power converter
designed for AirSense 11.
Portable Design
Rechargeable battery with
convenient carrying handle.
Emergency Backup Power
Useful during home power
outages and camping trips.
Wide AC Charging Range
Included charger supports
100–240V AC input.
Complete Power Package
Battery, dedicated converter,
and charging accessories.
Designed for ResMed
AirSense 11 CPAP Machines
The CPAP330-AS11B package
provides portable DC power
for compatible ResMed
AirSense 11 machines.
The BX2499 battery has
a variable DC output.
The included DC-to-DC
converter changes that
output into stable,
regulated 24V DC power
for the AirSense 11.
Battery and regulated
24V DC converter.
Connection example with
ResMed AirSense 11.
CPAP machine not included.
Compatibility Notice:
This product is configured
for compatible ResMed
AirSense 11 machines.
Other CPAP models may
require different cables,
converters, or battery packages.
High-Capacity 322Wh
Rechargeable Battery
The included BiXPower BX2499
battery provides
322 watt-hours of
nominal stored energy.
The battery is equipped
with an integrated carrying
handle, LED power indicator,
charging input, and DC
output connection.
BiXPower BX2499
rechargeable battery.
Battery Dimensions and Portability
Battery dimensions
and carrying handle.
The battery weighs approximately
2kg (4.3 pounds), making it
a portable power option
for use at home, in an RV,
or while camping.
How Long Can the CPAP330
Power an AirSense 11?
Battery runtime depends on
the CPAP machine's average
power consumption.
AirSense 11 power requirements
can vary considerably depending
on pressure, humidification,
heated tubing, mask leakage,
and operating conditions.
The following estimates use
322Wh nominal battery capacity
and an illustrative 85%
usable-energy factor to account
for potential losses.
They are calculations,
not guaranteed operating times.
Tips to Extend Battery Runtime
-
Turn off heated humidification
when appropriate for your therapy.
-
Disable heated tubing when
practical and medically appropriate.
-
Use your prescribed CPAP
pressure settings.
-
Fully charge the battery
before overnight operation.
-
Test your battery setup
before relying on it overnight.
Important:
Heated humidification and
heated tubing may significantly
increase power consumption.
Do not change prescribed
therapy settings simply
to increase runtime.
Battery Technical Specifications
Built-In Battery Protection
The BX2499 battery incorporates
electronic protection circuitry
designed to provide:
- Cell balancing
- Overcharge protection
- Over-discharge protection
- Over-current protection
- Temperature protection
- Secondary protection circuitry
Understanding the Battery's
Variable DC Output
The BX2499 battery output
voltage changes according
to its charge level.
When fully charged, the
output may be approximately
29.5V DC.
During discharge, the voltage
gradually decreases and
eventually reaches the
battery cutoff level near
20V DC.
The nominal battery voltage
is approximately 25V DC.
Illustrative battery
discharge voltage curve.
Important:
Do not connect the BX2499
variable-voltage output
directly to your AirSense 11.
Use the supplied regulated
24V DC converter.
Compact Regulated 24V
DC Converter for AirSense 11
The included DC-to-DC converter
transforms the battery's
variable DC voltage into
a regulated 24V output
for compatible AirSense 11
CPAP machines.
Its compact construction,
wide input voltage range,
and special CPAP connector
make it suitable for
portable battery operation.
Special 24V DC converter
for AirSense 11.
Converter input and output
connections.
DC Converter Specifications
Compact DC converter dimensions.
Compact converter size comparison.
Power Compatibility:
The supplied converter has
a maximum output rating
of 65W. Confirm that your
complete CPAP configuration
does not exceed this rating.
How to Charge the Battery
The package includes a
dedicated AC charger that
supports 100–240V AC input.
-
Connect the charger output
to the battery charging port.
-
Connect the charger to a
compatible AC wall outlet.
-
Allow the battery to charge
according to its charging
instructions and indicators.
-
Disconnect the charger when
charging is complete if
directed by the manual.
Charging the BX2499 battery.
Charging Note:
Use the supplied or
manufacturer-approved charger.
The battery charging input
and CPAP converter output
serve different purposes.
How to Connect the Battery
to Your AirSense 11
-
Fully charge the BX2499 battery.
-
Connect the battery's DC
output cable to the input
of the 24V converter.
-
Connect the converter's
special output plug to the
AirSense 11 power input.
-
Turn on the battery output.
-
Start the CPAP machine
and verify normal operation.
Battery-to-converter connection.
Complete AirSense 11
battery connection.
Alternative AC Power Option
When a suitable AC outlet
is available, the included
battery AC charger and
CPAP power converter may
also be used together
to supply regulated
24V DC power to a compatible
AirSense 11 machine,
as described in the
original product configuration.
This can be useful when
the original AirSense 11
AC power adapter is
temporarily unavailable.
AC charger connected to
the AirSense 11 converter.
Alternative AC-powered
AirSense 11 setup.
Important:
Only use this arrangement
with the approved charger
and converter combination.
Confirm voltage, polarity,
connector compatibility,
and power ratings.
Package Contents
Standard CPAP330-AS11B
package contents.
-
1 × BX2499 Battery:
322Wh high-capacity
rechargeable battery
-
1 × 24V DC Converter:
Regulated output with
special AirSense 11 connector
-
1 × AC Battery Charger:
Compatible with 100–240V
AC power input
-
Battery Output Connection:
For connecting the battery
to the converter
ResMed AirSense 11 CPAP
machine is not included.
Important Airline Travel
Information
322Wh Battery – Exceeds
Standard Passenger Airline Limits
The BX2499 rechargeable battery
has a nominal capacity of 322Wh.
This exceeds the standard
160Wh upper limit for
spare lithium-ion batteries
permitted in passenger baggage
under the usual FAA exceptions.
Therefore, this battery
is not suitable for ordinary
passenger airline baggage.
For current regulations, visit
FAA Airline Passengers and Batteries
.
Need a Smaller Battery
for Airline Travel?
Frequently Asked Questions
Does CPAP330-AS11B work
with ResMed AirSense 11?
Yes. It is configured for
compatible AirSense 11
machines using the included
regulated 24V DC converter
and special connector.
Can the battery power
AirSense 11 directly?
No. The battery has a
variable DC output.
Use the included regulated
24V converter.
How many nights can
the battery last?
Under favorable low-power
conditions with heated
humidification off, the
battery may provide
approximately 3–4 nights.
Actual runtime depends on
the CPAP machine and settings.
Can I use heated
humidification?
The complete machine setup
must remain within the
converter's 65W output rating.
Heating functions can
substantially reduce runtime.
Can I take the battery
on an airplane?
The 322Wh battery exceeds
the usual passenger airline
limits for spare lithium-ion
batteries and should not
be packed as ordinary
passenger baggage.
Does the package include
an AC charger?
Yes. The package includes
a compatible AC battery
charger supporting
100–240V AC input.
Does the package include
the AirSense 11 converter?
Yes. The package includes
a regulated 24V DC converter
with the special AirSense 11
power connector.
Can the battery be used
during a power outage?
Yes. When charged and properly
connected, it can provide
portable backup power for
a compatible AirSense 11
machine within the system's
electrical ratings.
Is the CPAP machine included?
No. The ResMed AirSense 11
machine is sold separately.
Warranty and Product Support
The BiXPower CPAP330-AS11B
includes a
one-year limited warranty
covering qualifying
manufacturing and quality defects.
Rechargeable batteries naturally
lose capacity with age and use.
Normal battery wear is not
considered a manufacturing defect.
For product compatibility,
technical support, and
additional accessories, visit
BiXPower.com
.
BiXPower CPAP330-AS11B –
High-capacity 322Wh rechargeable
CPAP backup power with
regulated 24V DC output
for compatible ResMed
AirSense 11 machines.
