EASYLONGER ES400 AIR CPAP Battery Backup — 148Wh LiFePO4, Airline-Approved
Climate Pledge Friendly & ClimatePartner Certified
↗
Certified to matter.
-
ResMed S9 AirSense 10 AirSense 11 AirCurve 10 AirCurve 11 AirMini DreamStation DreamStation 2 Luna TravelPAP
- Airline-Approved & Travel-Ready: 148Wh — compliant on most airlines (under IATA 160Wh limit). A full night of CPAP therapy for portable devices. FSA / HSA eligible.
- Never Miss a Night's Sleep: Pass-Through / UPS Mode keeps your CPAP running the moment power cuts out — no interruptions, no reconfiguring.
- 148Wh, Full Night Runtime for most CPAPs (humidifier off). Calculate your runtime
- Universal CPAP Fit: 4 DC cables included. Set your voltage once, then connect and sleep.
- Versatile Outputs: 160W cigarette lighter socket, 30W USB-C, 18W USB-A. Powers phones, tablets, and small devices alongside your CPAP.
- 3 Ways to Recharge: AC adapter (4–5 hrs), car charger (2–3 hrs, not included), or solar panel (3–4 hrs with 80W panel, not included).
Be Ready Before the Storm
When the power goes out, your CPAP doesn't have to.
2-Year Warranty
Register after purchase to double your coverage — exclusive to our official store.
FSA / HSA Eligible
Use pre-tax dollars and save up to 30%. Submit your receipt for reimbursement.
Direct Manufacturer Support
Talk to us directly — no third parties, no runaround. Lifetime support included.
30-Day Money-Back Guarantee
Not satisfied? Full refund, no questions asked. Zero risk.
| Name | ES400 AIR |
|---|---|
| Capacity | 3.7V/40000mAh/148Wh Battery pack capacity: 14.8V/10000mAh/148Wh |
| DC Input | 12-24V/3A(Max) |
| Max Solar charging | 60W |
| Cigar Lighter Socket output | 12-16V/10A(Max) |
| USB Output | 5V/3A, 9V/2A, 12V/1.5A |
| USB-C Output | DC5V/3A, 9V/3A, 12V/2.5A |
| DC Output | 12V/5A, 16.5V/4A, 20V/3.5A, 24V/3.5A |
| Measure | 185 × 121 × 40 mm |
| N.W | 836.3 g |
- 1 × 72W AC Adapter
- 1 × DC Cable for Philips Dreamstation / 2
- 1 × 40000mAh CPAP Battery ES400AIR
- 1 × DC Cable for AirMini/ AirSense 11/ AirCurve 11
- 1 × DC Cable for ResMed S9
- 1 × DC Cable for AirSense 10/ AirCurve 10
- 1 × Handy bag
- 1 × User Manual
We offer free shipping straight to your door throughout the contiguous US*.
It usually takes 3-7 business days* for your package to be delivered, so you can sit back and relax, worry-free.
*Please see our shipping policy for more details.
Get a refund when you return your undamaged products within 30 days. Once the item arrives back at the EASYLONGER warehouse for inspection, the refund process will begin. See ourreturn policy for more details.
Why Choose ES400AIR?
Operation Guide
How-To-Video
Related Documents Download
Users' heartfelt sharing
Satisfied in every way.
Overall, the EASYLONGER ES960 offers a reliable and worry-free sleep experience. Perfect for off-grid camping and emergency backup, it's a power station you'll be confident to travel with...
Finally, anxiety-free sleep.
The EASYLONGER ES960 offers a reliable and worry-free sleep experience. Perfect for emergency backup during storms, it kept my ResMed running for 3 nights. It’s not just a battery; it's peace of mind...
A perfect match for my machine.
From the moment you open the box, you'll discover the advantages of the ES960. It includes all the cables you need—no extra adapters required. This battery is suitable for almost every CPAP user out there...
FAQ
Most Frequently Asked
Q: Which CPAP machines is the ES400 AIR compatible with?
A: The battery includes 4 DC cables specifically designed for major brands, including ResMed (AirSense 10/11, AirMini), Philips (DreamStation 1/2), and Luna G3. Additionally, it features a built-in cigarette lighter socket, allowing you to use your CPAP's car charger cable directly.
Q: How long will it power my CPAP machine?
A: It is designed as a lightweight travel backup and typically provides 1 full night of power. Runtime depends heavily on pressure settings; you MUST turn OFF the heated humidifier and heated tube to ensure it lasts through the night.
Q: Is this battery FAA/TSA approved for air travel?
A: Yes, with conditions. The capacity is 148Wh. According to FAA/TSA regulations (100Wh-160Wh range), you are allowed to bring it in your carry-on baggage (usually limited to 2 batteries per person), but you typically need airline approval. It is strictly prohibited in checked luggage.
Q: How do I select the correct voltage for my CPAP?
A: Check your CPAP machine's input voltage first (e.g., 24V for ResMed). Then, press the voltage button to select the matching output before connecting your device via the DC port.
Q: Can I use the built-in cigarette lighter port for my CPAP?
A: Yes. You can power your CPAP machine using the 12V cigarette lighter socket (160W max). This is a great alternative if you have your machine’s car charging cable.
Q: Can I charge the battery with solar panels?
A: Yes. It supports solar charging. We recommend using an 80W (or higher) solar panel with an 18-24V output to ensure efficient charging.
Q: How do I recharge the battery?
A: There are 3 ways to recharge: 1) Via the included AC Wall Adapter (4-5 hours), 2) Via a Car Charger, or 3) Via a Solar Panel.
Q: Does it support pass-through charging?
A: Yes. You can charge the ES400 AIR battery while it is simultaneously powering your CPAP machine, ensuring uninterrupted therapy.
Q: Does the battery remember my voltage setting?
A: No. For safety reasons, the voltage resets every time the battery is turned off. You must manually select the correct voltage each time you use the DC port.
Q: How do I turn off the battery?
A: Press and hold the power/voltage button for 3 seconds to turn it off. If no device is connected, the battery will also automatically shut down after a period of inactivity to save power.
Q: How can I extend the warranty to 2 years?
A: You can extend your warranty by registering on our official website (www.easylonger.com) via the registration prompt or the red scrolling banner.
Regarding Battery Issues
- Q: Will using this battery damage my CPAP machine?
A: No. It is designed to be as safe as a wall outlet. To ensure safety, simply use the correct DC cable included for your specific model and select the matching voltage (e.g., 24V for ResMed) on the battery before connecting. It features built-in protection against over-voltage and short circuits. - Q: My spouse and I use different CPAP brands. Can we share this battery?
A: Yes. The package includes 4 different DC cables that cover most major brands like ResMed and Philips. You can easily switch the cable and adjust the voltage setting to match each machine’s specific requirements. - Q: What type of battery is it? Is it dangerous to keep at home?
A: It uses premium LiFePO4 (Lithium Iron Phosphate) cells, which are non-explosive, incombustible, and extremely safe for home storage. It offers over 3,000+ charge cycles (approx. 10 years of lifespan), making it much more durable than standard lithium-ion batteries. - Q: I only used the battery once last year and now it won't work. Why?
A: Batteries can fail if left uncharged for long periods due to self-discharge. To maintain healthy battery cells, we strongly recommend performing a full charge/discharge cycle every 1-2 months, even when not in use. If your battery is completely unresponsive, please contact our support team.
For after-sales inquiries
- Q: What is your return policy if it doesn't work with my machine?
A: We offer a 30-day money-back guarantee. If the battery is not compatible with your device or you are not satisfied, you can return it within 30 days. Please contact us to initiate the return. - Q: What if I have technical issues? How fast is your support?
A: We offer lifetime technical support. Our team typically responds within 24 hours (business days). To speed up your request or warranty claim, please include your Order Number and approximate purchase date in your first message so we can verify your details immediately. - Q: How can I speed up my support request or warranty claim?
A: To ensure the fastest resolution, please include your Order Number and approximate purchase date in your initial message. This allows our team to instantly verify your warranty status and product details without delay.