Two Separate 99.6Wh Batteries — 199.2Wh Total Capacity

This kit includes two high-capacity BP90 rechargeable batteries. Each battery stores 99.6 watt-hours of energy, providing a combined nominal capacity of 199.2Wh.

• Battery 1: 99.6Wh rechargeable lithium-ion battery.
• Battery 2: 99.6Wh rechargeable lithium-ion battery.
• Combined capacity: 199.2Wh.
• Flexible operation: Use either battery separately or connect both using the included Y25 output splitter.
• Compact design: Each battery is approximately 0.9 inch thick and weighs about 1.4 lb.

Using two separate batteries offers greater flexibility for charging, carrying, and powering your CPAP machine. The batteries can be used individually or together with the supplied compatible accessories.

Airline Travel — Each Battery Is Below 100Wh

When traveling by air:

• Carry both BP90 batteries in your carry-on baggage, not checked baggage.
• Disconnect the batteries from each other and remove all splitter cables before packing.
• Protect exposed battery terminals and connectors from accidental short circuits.
• Keep the battery capacity labels visible and readable.
• Confirm your airline's current rules, particularly for international flights.
• Do not transport damaged, swollen, or recalled batteries.

Important: The combined 199.2Wh capacity represents two separate 99.6Wh batteries, not one 199.2Wh battery. Airline acceptance is subject to carrier policies and applicable regulations. Do not assume that connecting the batteries together creates an airline-approved 199.2Wh battery.

For current regulations, visit the FAA Airline Passengers and Batteries guidance.

Designed for ResMed AirSense 10 CPAP Machines

This battery kit includes a special DC power cable designed for compatible ResMed AirSense 10 series CPAP machines.

The BP90 battery provides a selectable constant 24V DC output through Output Port III. The included ResMed S10 DC power cable allows the battery system to power compatible machines without using a separate DC-to-AC inverter.

Direct DC operation avoids the additional power conversion losses associated with using an AC inverter and the CPAP machine's standard AC power adapter.

Compatible ResMed CPAP Machines

• ResMed AirStart 10 CPAP with HumidAir Heated Humidifier
• ResMed AirStart 10 Auto CPAP with HumidAir Heated Humidifier
• ResMed AirSense 10 CPAP with HumidAir Heated Humidifier
• ResMed AirSense 10 Elite
• ResMed AirSense 10 AutoSet
• ResMed AirSense 10 AutoSet for Her
• ResMed AirCurve 10 S BiLevel
• ResMed AirCurve 10 VAuto BiLevel

Note: Compatibility is limited to the specified machine models and appropriate DC power cable. Do not assume compatibility with ResMed AirSense 11 or other unlisted machines.

How to Connect the BP90 Batteries to Your CPAP Machine

Option 1 — Use One BP90 Battery Separately

Each BP90 battery can independently power a compatible ResMed AirSense 10 machine using the included special S10 DC power cable.

Set the battery's Output Port III to 24V before connecting the CPAP power cable.

Option 2 — Connect Two BP90 Batteries Using the Y25 Splitter

The included Y25 split dongle allows two BP90 batteries to be connected to a single compatible ResMed S10 DC power cable.

Both batteries must be set to the same 24V output before connection.

Step-by-Step Dual Battery Connection

1. Fully charge both BP90 batteries.
2. Disconnect any output cables from Output Port III.
3. Set Output Port III of each battery to 24V DC.
4. Connect the two male plugs of the Y25 splitter to Output Port III on the two BP90 batteries.
5. Connect the ResMed S10 DC power cable to the female connector of the Y25 splitter.
6. Connect the ResMed S10 DC power cable to the compatible CPAP machine.
7. Turn on the CPAP machine and verify normal operation.

Extended CPAP Runtime — Approximately 2 to 3 Nights

Two fully charged BP90 batteries may power a compatible ResMed AirSense 10 CPAP machine for approximately 2 to 3 nights with the heated humidifier turned off, depending on operating conditions.

Actual runtime varies with therapy pressure, machine settings, mask leakage, operating temperature, battery age, and heated accessories.

Tips to Maximize CPAP Battery Runtime

• Turn off the heated humidifier when appropriate.
• Disable heated tubing to reduce electricity consumption.
• Fully charge both BP90 batteries before overnight use.
• Use the compatible direct DC power cable instead of an AC inverter.
• Test the complete battery and CPAP setup before traveling or relying on it during an outage.

Do not change prescribed therapy pressure settings solely to extend battery runtime without consulting your healthcare professional.

BP90 Battery Features and Output Ports

Each BP90 rechargeable battery includes three output ports, providing flexible power options for compatible portable electronics.

Output I — 5V USB Output

Output I provides 5V USB power with a maximum output current of 2.1A.

This port can power or charge compatible USB devices such as smartphones, music players, and other small electronics.

A USB charging cable is not included unless separately specified.

Output II — 9V to 12.6V DC Output

Output II provides direct battery-cell voltage with a nominal output of approximately 11.1V.

• Fully charged voltage: approximately 12.6V
• Nominal voltage: 11.1V
• Output voltage range: 9V to 12.6V
• Maximum output current: 5A
• Connector size: 3.5 × 1.35mm

This output is not constant voltage. Its voltage gradually decreases as the battery discharges. The output shuts off when the battery reaches its low-voltage cutoff.

Use this port only with devices that can safely accept its full output voltage range.

Output III — Selectable Constant 16V, 19V, or 24V DC

Output III provides selectable constant-voltage DC power for compatible electronic equipment.

• 16V DC output
• 19V DC output
• 24V DC output
• Maximum output current: 4A, subject to the battery's output power limits
• Output connector: 5.5 × 2.5mm

For compatible ResMed AirSense 10 and AirCurve 10 machines, select 24V DC.

How to Select or Change the Output Voltage

1. Disconnect the output cable from Output Port III.
2. Press and hold the CHECK button for approximately 3 seconds.
3. One of the voltage indicator LEDs will begin flashing.
4. Press and release the CHECK button to move between the available voltage settings.
5. Continue pressing until the 24V indicator is selected.
6. Connect the power cable to Output Port III.

Once the cable is connected, the selected output voltage is locked to help prevent accidental changes during operation.

To change the voltage again, disconnect the output cable and repeat the procedure.

Important: Always verify the correct voltage before connecting your CPAP machine or other electronic equipment.

Compact and Portable Rechargeable Battery

The BP90 battery combines high energy capacity with a compact design, making it convenient for travel and portable backup power applications.

Each battery measures approximately 186 × 114 × 22.5mm (7.5 × 4.5 × 0.9 inches) and weighs approximately 621g (1.4 lb).

Flexible Battery Charging Options

Each BP90 battery accepts a DC charging input from 12V to 24V through its 5.5 × 2.1mm charging connector.

The included AC battery charger supports 100–240V AC, 50/60Hz power sources, making it convenient for use in many countries with an appropriate wall plug adapter.

Option 1 — Charge Each Battery Separately

Connect the supplied AC charger to one BP90 battery at a time.

Typical charging time is approximately 4–6 hours per battery, depending on charging conditions and the battery's remaining capacity.

Option 2 — Charge Two Batteries with One Charger

The kit includes a 5.5 × 2.1mm charging split dongle that allows two compatible BP90 batteries to be connected to the supplied charger.

This charging splitter is different from the Y25 output splitter used to power the CPAP machine.

When charging two batteries together, use the supplied compatible charger and charging splitter. Charging time may be longer than charging a single battery.

Optional Vehicle Charging

For additional flexibility, the BP90 battery can also be charged from a compatible vehicle cigarette lighter socket using the optional BiXPower CH160 Car Charging Cable.

Verify the vehicle power source voltage, connector polarity, and compatibility before charging.

BP90 Battery Technical Specifications

Built-In Battery Protection

Each BP90 battery includes an internal protection circuit designed to help protect the rechargeable battery during normal use.

• Over-charge protection
• Over-discharge protection
• Over-current protection
• Over-temperature protection
• Short-circuit protection

Always follow proper charging, storage, transportation, and equipment connection procedures.

Package Contents — Complete Dual Battery Kit

This package includes the following components:

• 2 × BiXPower BP90 rechargeable batteries — 99.6Wh each
• 1 × Special ResMed S10 DC power cable — for compatible AirSense 10 series machines
• 1 × Y25 output split dongle — for connecting two BP90 batteries to the CPAP power cable
• 1 × AC battery charger with power cord
• 1 × 5.5 × 2.1mm charging split dongle — for charging two batteries using one compatible charger

Frequently Asked Questions

Can I take two BP90 batteries on an airplane?

Under general FAA rules, two separate BP90 lithium-ion batteries rated at 99.6Wh each are generally permitted in carry-on baggage for personal use. Both batteries must be disconnected and protected against short circuits. Airline policies and international restrictions may vary.

Is the total battery capacity 199.2Wh?

Yes. This kit contains two separate 99.6Wh rechargeable batteries, providing 199.2Wh of combined nominal stored energy. Actual usable energy delivered to a connected device will be lower because of conversion losses and operating conditions.

Can I use only one BP90 battery?

Yes. Each BP90 battery can independently power compatible ResMed AirSense 10 series machines using the correct DC power cable and 24V output setting.

How do I connect both batteries?

Use the included Y25 output splitter to connect the two BP90 Output III ports to the special ResMed S10 DC power cable. Both batteries must be set to 24V before connection.

How long will two BP90 batteries power my CPAP machine?

Depending on the CPAP machine's operating conditions, two fully charged BP90 batteries may provide approximately 2–3 nights of operation with the heated humidifier turned off. Actual runtime may be shorter.

Can I use the heated humidifier?

Heated humidification substantially increases power consumption and reduces battery runtime. For extended battery operation, turning off the heated humidifier is recommended when appropriate.

Can I charge both batteries at the same time?

Yes. The included 5.5 × 2.1mm charging splitter is designed for charging two compatible BP90 batteries using the supplied charger. Charging time may increase.

Can the BP90 batteries power other electronics?

Yes. Each battery includes a 5V USB output, a 9–12.6V DC output, and a selectable constant 16V, 19V, or 24V DC output. Always verify device compatibility, output voltage, connector dimensions, polarity, and current requirements.

Is this battery kit compatible with ResMed AirSense 11?

BP90 is compatible with ResMed AirSense 11 CPAP machines. However, you will need a different power cable to make this kit work for AirSense 11. This AirSense 11 Power Output Cable is not included with this kit, but is available for purchasing separately.

One-Year Limited Warranty

BiXPower provides a one-year limited warranty covering qualifying manufacturing defects. Rechargeable batteries naturally lose some capacity with age and use. Normal battery wear is not considered a manufacturing defect.

Portable CPAP Power for Travel, Camping, and Backup Use

The BiXPower BP90X2-S10 Dual Rechargeable CPAP Battery Kit combines the convenience of two individually portable 99.6Wh batteries with the flexibility of a combined 199.2Wh nominal energy capacity.

With a special ResMed S10 power cable, included battery splitters, and flexible charging options, this complete kit provides a practical portable power solution for compatible ResMed AirSense 10 series machines.

BiXPower — Professional Portable Power Solutions.