EASYLONGERCPAP Battery ES400 AIR, 148Wh CPAP Battery Backup Power Supply for ResMed S9, AirSense 10, AirCurve 10, AirSense 11, AirMini, Philips DreamStation, CPAP Battery for Camping Outdoor

This battery is perfect for our needs and we’ve been using one for over 6 months now. We can fly with this battery as carry on, use it for laptops and charging other stuff, and use it for about 3 days of CPAP use (no heater) while off grid. We have a couple of these batteries now and keep them topped off with this solar panel: https://www.amazon.com/dp/B0DKH4PWYF?ref=ppx_pop_mob_ap_share (fits in our checked luggage) and they charge with the cables uncles with the solar panel. Nothing else needed. We can charge both of these batteries from almost zero with the solar panel in the morning then charge everything else we have the rest of the day. I’ve also used this battery to run a car tire air compressor because the car I rented didn’t have a 12v accessory outlet, only USB ports. Battery worked great to pump up tires. If one of these batteries dies, I’ll likely just buy another.

Probably the best battery for CPAP at a low price. Kept my Dreamstation CPAP running for 8 nights without a recharge (auto pressure averaging 5.5, no humidifier). Travels easily, about the size of a small book, and comes with all the cables you need to make the strange connections required for CPAPs, and is equipped to handle all of the strange voltages as well. Incredibly light for how long it powers your CPAP, awesome for camping. Unlike cheaper batteries, this item delivers consistent voltage at all battery levels (0-100% charged). The cheaper ones will still have 50% charge and stop powering the CPAP due to voltage drop (CPAP displays error and won't run when voltage drops). This is really important.This battery is just below the 160Wh airline limit. I have flown with it in my carryon dozens of times. Sometimes security will ask me about it and I will tell them it's for my CPAP (which I also have in my carryon) and they just wave me on through. DO NOT put it in your checked bag or it will get confiscated.Don't mess around with the cheaper bulkier batteries. They aren't worth the trouble. You also don't have to spend $300+ for a CPAP battery either. Get this one and you'll never stress about powering your CPAP again. Highly recommend!!

I purchased this to travel with a Resmed Airsense 11. As others noted, and as listed in the instructions, you must set the battery to 24v output. When using the humidifier and heated tube, it lasts 5 hours. Using without the humidifier and heated tube the battery did not even register a drop overnight. It would definitely last several nights with this configuration. The battery did not get warm while charging nor while in use. I recommend.

Bought for camping, made sure it says does work with my cpap .. wouldn’t even turn it on! If you buy make sure you have enough time before your trip to return it and get something else

Okay, so yes, this will run my airsense 10 autoset machine, even with the humidifier active. But even better... it accepts the car charger for my portable oxygen concentrator. The batteries that come with the POC are about 6700 mah/72 wh. This is 40,000 mah/ 148 wh. I was able to literally charge my POC from the backup battery while running it. Hours of use barely touched the capacity. It charges quickly, and is not very big considering how powerful it is. I was able to strap it on to the POC and wear both around my waist. Really impressed. And it's like two thirds the price of another backup battery but 2-4 times the capacity, with much broader functionality. Setting it up for the CPAP was actually more complex than using it for the POC. And the airline accepted it just fine.

The description contains some misleading/confusing text (at least to me):Here's what it says at the top of the Amazon page:[Use While Charging] This battery pack works like a small UPS, with a Pass-through function that can charge and supply power at the same time. So you don't have to worry about sudden power interruptions causing your devices to shut off. Pass-through charging prevents power interruptions so you don't run out of juice. *Note: If you are powering a CPAP, you will need a car charger male-DC (your CPAP size) CPAP cable with a voltage converter (sold separately).12v dc output is exactly what you'd expect with a car cigarette lighter plug. However, most modern CPAP machines run off 24v dc these days. I bought this battery precisely because it offers a 24v output for my CPAP, and I very specifically bought it to be a standby backup power source in case my power goes out in the middle of the night. That is a little more difficult, because:1) the input charging port is the exact same port as the output-to-cpap port (so you can't plug them both in at the same time), and 2) the workaround (using the car cigarette lighter plug output port) only provides 12v dc.The description says you can use a voltage converter (that converts UP from 12v to 24v) which plugs into the cigarette port. That is yet another gadget to purchase and plug into this setup.After a conversation with the seller, who offered a refund, I decided to look into the 12v-24v buck converters, and found one on Amazon for about $28. If you go this route, make sure the converter you buy has the correct plug that matches your CPAP machine as well as the car cigarette lighter input.I wondered why the designer combined the input and output ports into one plug, which makes it more expensive and complicated to use the standby pass-through utility of this battery. The seller told me that it was an engineering design choice because of the limited space available for more plugs on the device; either add more plugs and remove battery capacity, or combine the charging and output plugs into one plug to have more battery space. My vote, obviously, would be for two separate plugs, and maybe even dropping the car cigarette lighter plug, so that pass through ability was automatic.To be fair, it is rugged and it's nice that it allows different output voltages. I've amended my original review based on my purchase of the 12v-24 converter. The unit now functions with pass-through, though it's quite bulky with these extra cables and converters all connected up.I'll amend my review later when I determine actual battery life during use. I did use the battery for one night of camping and it performed well with my CPAP.One other annoyance... all my previous 12v CPAP batteries actually displayed the % of battery life remaining. This product only gives you the "dumb" battery indicator with 4 bars in it. I have found it very useful in the past to know how much my battery uses each night with the CPAP, and now all I know is that the charge is somewhere between 0-25%, 25-50%, 50-75%, and 75-100%. Not very useful.I've raised the Star rating from 3 to 4 stars because the seller was communicative, and after I bought the converter, the battery does function in UPS pass-through mode.

So far I'm liking this battery pack. It is a bit heavy but manageable. I've been using it taking my Airmini cpap camping and even sometimes at home. I usually sleep 5 hours a nite with mask on. After 15 hours the battery is still at 50%. A bigger machine with humidity will pull a lot more but getting a night or two shouldn't be a problem