BiXPower LF1220-DM90S10-UPS –
256Wh LiFePO4 Rechargeable
CPAP Backup Battery for
ResMed AirSense 10,
AirStart 10 and AirCurve 10
The BiXPower
LF1220-DM90S10-UPS
is a high-capacity, long-life
rechargeable CPAP battery
system designed for compatible
ResMed AirSense 10, AirStart 10,
and AirCurve 10 machines.
This complete portable
power package combines a
256Wh lithium iron phosphate
(LiFePO4) rechargeable battery
with a compact, high-efficiency
90W regulated 24V
DC power converter.
It provides an alternative
power source for home
power outages, emergency
backup, camping, RV use,
and off-grid CPAP operation.
The system also supports
a UPS-style backup
configuration, allowing
the battery to provide
stored energy when
external power is unavailable.
Under favorable low-power
conditions with heated
humidification turned off,
the battery may provide
approximately 3–4 nights
of CPAP operation.
Actual runtime depends
on machine settings and
power consumption.
LF1220 battery and regulated
24V DC power converter.
256Wh Battery Capacity
12.8V 20Ah rechargeable
LiFePO4 battery.
Long Battery Life
Rated for approximately
2,000 charge-discharge cycles.
Regulated 24V Output
90W DC converter for
compatible ResMed machines.
UPS-Style Backup
Provides stored battery
energy for power interruptions.
Compact and Portable
Approximately 5.6 lb
battery with carrying bag.
High-Efficiency Converter
Up to 96% efficiency
with fanless operation.
Compatible ResMed CPAP
and BiLevel Machines
This battery power system
is designed for the
following compatible
ResMed 10-series machines.
ResMed AirStart 10 Series
- AirStart 10 CPAP
- AirStart 10 Auto CPAP
ResMed AirSense 10 Series
- AirSense 10 CPAP
- AirSense 10 Elite
- AirSense 10 AutoSet
- AirSense 10 AutoSet for Her
ResMed AirCurve 10 Series
- AirCurve 10 S BiLevel
- AirCurve 10 VAuto BiLevel
The included power converter
delivers regulated 24V DC
through a special connector
for compatible ResMed
10-series machines.
Complete battery power
connection for AirSense 10.
CPAP machine not included.
Compatibility Notice:
This package is designed
for compatible ResMed
10-series machines.
ResMed AirSense 11 uses
a different power connector
and requires a different
battery power package.
Long-Life 256Wh
LiFePO4 Rechargeable Battery
The included BiXPower LF1220
battery uses lithium iron
phosphate technology,
also known as LiFePO4
or LFP.
It provides
12.8V nominal voltage,
20Ah capacity, and 256Wh
of stored energy.
LiFePO4 chemistry is valued
for long cycle life,
good thermal stability,
and reliable rechargeable
energy storage.
BiXPower LF1220
256Wh rechargeable battery.
Why Choose LiFePO4?
-
Long cycle life:
Approximately 2,000 cycles
under specified conditions.
-
Rechargeable design:
Suitable for repeated
charging and discharging.
-
Thermal stability:
LiFePO4 generally provides
favorable thermal stability
compared with many other
lithium-ion chemistries.
-
Portable capacity:
256Wh of nominal energy
in a battery weighing
approximately 5.6 lb.
-
Built-in protection:
Electronic circuitry helps
protect against abnormal
charging and discharging.
Battery Output Connections
The LF1220 battery has
two power connectors
that can be used for
compatible charging
or discharging applications.
LF1220 battery input
and output connections.
-
DC Barrel Connector:
5.5 × 2.5mm female,
center positive.
-
Anderson Powerpole Connectors:
Red positive and black
negative.
Electrical Safety:
Always confirm voltage,
polarity, and current
ratings before connecting
other equipment.
Never short-circuit
battery outputs.
Portable Battery Carrying Bag
The included carrying bag
helps make the LF1220
battery easier to
transport and store.
LF1220 battery carrying bag.
Special High-Efficiency
24V DC Converter for
ResMed AirSense 10
The included compact
DC-to-DC converter changes
the LF1220 battery's
variable 12V-class output
into regulated 24V DC power
for compatible ResMed
AirSense 10, AirStart 10,
and AirCurve 10 machines.
Compact and Lightweight
The converter features
a very small design
measuring approximately
2.5 × 1.9 × 0.7 inches
(63.5 × 48.9 × 16.9mm)
and weighing approximately
2.54 oz (72g)
for the converter body.
It provides efficiency
of up to 96% under
suitable operating
conditions and uses
a quiet, fanless design.
Compact, lightweight
90W DC converter.
Converter with special
ResMed 10-series connector.
DC converter connection details.
DC Converter Specifications
| Converter Type |
Regulated DC-to-DC
power converter |
| Input Voltage |
10–21V DC |
| Input Connector |
5.5 × 2.5mm barrel |
| Input Polarity |
Center positive |
| Output Voltage |
Regulated 24V DC |
| Maximum Output Power |
90W (24V, 3.75A) |
| Output Connector |
Special connector for
compatible ResMed
10-series machines |
| Output Cord Length |
Approximately 70 inches,
with ferrite |
| Converter Body Dimensions |
Approximately
63.5 × 48.9 × 16.9mm |
| Converter Body Weight |
Approximately 72g
(2.54 oz) |
| Efficiency |
Up to 96% |
| Cooling |
Fanless design |
Power Rating:
The converter supports
a maximum output of 90W.
Confirm that the complete
CPAP configuration remains
within this rating.
How Long Can the LF1220
Power an AirSense 10?
The LF1220 battery provides
256Wh of nominal capacity.
Actual operating time
depends on average CPAP
power consumption.
The following estimates use
an illustrative 85%
usable-energy factor
to account for potential
battery and converter losses.
These figures are estimates,
not guaranteed runtimes.
| Average CPAP Power |
Estimated Runtime |
| 5W | 43.5 hours |
| 8W | 27.2 hours |
| 10W | 21.8 hours |
| 12W | 18.1 hours |
| 15W | 14.5 hours |
| 20W | 10.9 hours |
| 25W | 8.7 hours |
| 30W | 7.3 hours |
| 40W | 5.4 hours |
| 50W | 4.4 hours |
| 60W | 3.6 hours |
Under favorable low-power
conditions with heated
humidification turned off,
the battery may provide
approximately 3–4 nights
of CPAP operation.
Higher pressure settings,
heated humidification,
and heated tubing may
substantially reduce runtime.
Tips to Extend Runtime
-
Turn off heated humidification
when appropriate for your therapy.
-
Disable heated tubing
when practical.
-
Use prescribed CPAP
pressure settings.
-
Fully charge the battery
before overnight use.
-
Test the complete power
setup before relying on it.
UPS-Style Backup Power
for Home Power Outages
The LF1220 battery package
is designed for UPS-style
backup applications.
When connected in a
compatible charging and
power configuration,
the battery can provide
stored energy if external
power becomes unavailable.
This makes the system
useful for emergency
preparedness and
overnight CPAP backup.
UPS Performance Notice:
The published specifications
do not state an automatic
transfer time or guarantee
uninterrupted CPAP therapy.
Test the complete system
before depending on it
during an overnight outage.
Charging the LF1220 Battery
The package includes a
dedicated AC battery charger
compatible with
100–240V AC,
50/60Hz power sources.
Under the specified charging
conditions, the battery
typically takes approximately
three hours
to charge fully.
Charging the LF1220 battery.
Charging Instructions
-
Use the supplied
LiFePO4-compatible charger.
-
Connect the charger to
the designated compatible
battery charging connector.
-
Connect the charger
to a suitable AC outlet.
-
Monitor the charger
according to its instructions.
-
Disconnect the charger
when appropriate.
Charging Safety:
Charge the battery only
within the specified
0–45°C temperature range.
Use only a compatible
LiFePO4 battery charger.
How to Connect the Battery
to Your ResMed AirSense 10
-
Fully charge the LF1220 battery.
-
Connect the supplied
DC converter input
to the battery's
compatible output.
-
Connect the converter's
special ResMed connector
to the CPAP power input.
-
Verify all connections
are properly seated.
-
Start the CPAP machine
and confirm normal operation.
Battery and converter connection.
Complete ResMed AirSense 10
battery connection.
Important:
Do not connect the LF1220
battery's 12V-class output
directly to a ResMed
AirSense 10 machine.
Use the supplied regulated
24V converter.
LF1220 Battery
Technical Specifications
| Package Model |
LF1220-DM90S10-UPS |
| Battery Model |
LF1220 |
| Battery Chemistry |
Lithium iron phosphate
(LiFePO4 / LFP) |
| Nominal Voltage |
12.8V DC |
| Nominal Capacity |
20Ah |
| Energy Capacity |
256Wh |
| Minimum Battery Voltage |
10V |
| Maximum Battery Voltage |
14.6V |
| Continuous Discharge Current |
20A |
| Maximum Discharge Current |
25A |
| Battery Dimensions |
178 × 165 × 75mm
(7.1 × 6.5 × 3 inches) |
| Battery Weight |
Approximately 5.6 lb |
| DC Barrel Connector |
5.5 × 2.5mm female,
center positive |
| Additional Connector |
Anderson Powerpole,
red positive / black negative |
| Charging Temperature |
0–45°C |
| Discharging Temperature |
-20–60°C |
| Storage Temperature |
-20–40°C |
| Rated Cycle Life |
Approximately 2,000 cycles |
| Warranty |
One-year limited warranty |
Built-In Battery Protection
The LF1220 includes electronic
protection circuitry designed
to help protect against:
- Overcharging
- Over-discharging
- Over-current conditions
- Abnormal temperatures
- Cell imbalance
Secondary protection circuitry
is also included in the
battery specifications.
Complete Package Contents
Complete LF1220-DM90S10-UPS
package contents.
-
1 × LF1220 Battery:
12.8V 20Ah / 256Wh
LiFePO4 rechargeable battery
-
1 × Battery Carrying Bag:
Portable carry bag
-
1 × Regulated 24V Converter:
90W maximum output
with ResMed 10-series
power connection cable
-
1 × AC Battery Charger:
100–240V AC input,
with power cord
ResMed CPAP machine
is not included.
Important Airline
Travel Information
256Wh Battery –
Exceeds Standard Passenger
Airline Battery Limits
The LF1220 rechargeable
battery has a nominal
capacity of 256Wh.
This exceeds the standard
160Wh upper limit applicable
to certain larger spare
lithium batteries permitted
with airline approval
under U.S. FAA passenger rules.
Do not pack this battery
as ordinary passenger
carry-on or checked baggage.
For current airline
battery regulations, visit
FAA Airline Passengers and Batteries
.
Frequently Asked Questions
Does this battery work
with ResMed AirSense 10?
Yes. This package is designed
for compatible AirSense 10
machines using the included
regulated 24V converter.
Does it also support
AirCurve 10?
The package supports
selected AirCurve 10
S and VAuto machines.
Confirm your exact model
before ordering.
Can the battery power
my CPAP directly?
The LF1220 battery must
be used with the included
regulated 24V converter
for compatible ResMed
10-series machines.
How long will it
power my CPAP?
Runtime depends on average
power consumption and
machine settings.
The battery may provide
approximately 3–4 nights
under favorable low-power
conditions with heated
humidification turned off.
Can I use the heated
humidifier?
The complete CPAP configuration
must remain within the
converter's 90W rating.
Heated humidification
may significantly reduce
battery runtime.
Does it support
UPS-style backup power?
The package is designed
for UPS-style backup
applications. Actual
transfer behavior should
be tested with your
complete CPAP setup.
How many charging cycles
is the battery rated for?
The LF1220 battery is rated
for approximately 2,000 cycles
under specified conditions.
Actual service life
depends on usage and storage.
How long does charging take?
Approximately three hours
with the included charger,
depending on charging conditions.
Is the carrying bag included?
Yes. The package includes
a carrying bag for the battery.
Is the AC charger included?
Yes. The package includes
an AC battery charger
and power cord.
Does it work with
ResMed AirSense 11?
This package uses a
ResMed 10-series power
connector. AirSense 11
requires a different
converter and connector.
Warranty and Product Support
The BiXPower LF1220-DM90S10-UPS
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 LF1220-DM90S10-UPS –
256Wh LiFePO4 rechargeable
CPAP battery with high-efficiency
90W regulated 24V converter
for compatible ResMed
AirSense 10, AirStart 10,
and AirCurve 10 machines.
