DC power cord doesn’t work

Hello,

I use a Resmed Airsense 10 autoset and Medistrom Pilot 24 battery when camping. After several months, the DC power cord no longer works to power my CPAP. The battery is functional and it appears to not be making a good connection when plugged into the CPAP. I ordered a replacement cord and it doesn’t work either. Any suggestions?







ResMed Airsense 10 Autoset
Medistom Pilot 24v battery

Does the AC wall outlet power supply still work?

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Sorry! Yes the AC plug works! It appears as the dc cord doesn’t have a good connection.

The DC power cord/brick can fail.
Any way you can get another one and see if it is just the cord itself that is the problem?

You can buy a compatible one from amazon prime with next day delivery

If you're planning to use anything other than what you normally do, test it and do so in enough time to address any issue that might come up.

This applies to a battery pack and well as a travel CPAP. Unfortunately, it's not possible to test whether your CPAP will run properly on foreign voltage, but the risk of that not working is relatively low.

I’ve tried three dc cords. The first that came with my battery worked for at least a year with no problems. Then it started to malfunction as if there were a short in the cable. Sometimes it would work and sometimes it wouldn’t. If I moved it just right, it may start working. I ordered two replacements since and neither work. Now I can’t even get it to work by manipulating the cord. I think it has to do with the plug in on the back of the cpap but the strange thing is the AC adapter works every time!!?.

mwalling wrote: ↑

Fri Feb 14, 2020 3:51 pm

I’ve tried three dc cords. The first that came with my battery worked for at least a year with no problems. Then it started to malfunction as if there were a short in the cable. Sometimes it would work and sometimes it wouldn’t. If I moved it just right, it may start working. I ordered two replacements since and neither work. Now I can’t even get it to work by manipulating the cord. I think it has to do with the plug in on the back of the cpap but the strange thing is the AC adapter works every time!!?.

What I meant is to test everything several weeks before traveling each time you travel (unless your travel very frequently). That way, you'll identify any problems in tome to address them.

Bumping this post as I'm having this exact same issue.

I'm on my second Medistrom cable now. Any progress or ideas?

Last night, myAir reported I had 10 'Mask Off' events. When I checked this on OSCAR, I indeed had 10 periods of sleep reported. it seems to indicate that the machine cut out and rebooted 9 times with various lengths of interruptions, which is a little concerning.

I'm thinking of cutting an original ResMed 10 connector from an old power supply and soldering it to the Medistrom cable in place of the intermittent one. Unless there's a better idea?

You have corrosion/oxidation on the power port.Common

Get some 99.9% Isopropyl alcohol, sqirt it in the hole you put the plug into on the CPAP, and use a stuff nylon brush to scrub around in the opening. Do this 2-3 times waiting about a minute each time to let the IPA evaporate. Insect the port to make sure it is clean.

You may need to do the same on the barrel jack itself.

SluggerBaloney wrote: ↑

Wed Jun 03, 2026 1:05 pm

You have corrosion/oxidation on the power port.Common

Get some 99.9% Isopropyl alcohol, sqirt it in the hole you put the plug into on the CPAP, and use a stuff nylon brush to scrub around in the opening. Do this 2-3 times waiting about a minute each time to let the IPA evaporate. Insect the port to make sure it is clean.

You may need to do the same on the barrel jack itself.

Thank you for your reply, much appreciated.

I've been running it without the battery back up, direct from the power supply for a while. Getting the occasional 90 second drop out even though the connector is tight, not nearly as many as with the battery cable though.

I'll give all of the connections a clean as you've described and see how it goes.