DC Converter 24V 90W For S9™ Machines

DC Converter 24V 90W For S9™ Machines

This is my second converter the first one has been working fine for a couple of years but the molding on the cables where they connect to the converter has Separated exposing the fine wires

This is my second converter the first one has been working fine for a couple of years but the molding on the cables where they connect to the converter has Separated exposing the fine wires

I messed up my order. They not only straightened it out for free,they shipped for free. What more could you expect?

I needed something that would allow me to use my CPA while on a week long campout with no overnight electricity. This converter allowed me to use my 12 volt jumper box (for starting cars) as my overnight power supply. With the humidity control attached, I made it through a cool night on a charge. Without humidity, I lasted several nights. Camping with a CPAP does work!!

I have been testing my 24V converter for the past five nights. I am using it to power my ResMed S9 CPAP from a 35 amp-hour AGM deep-cycle AGM battery (Fullriver DC35-12). The battery only weighs 24 lbs. I have operated my CPAP, which is set at 10 cm H2O, for a total of 38 hours on a single charge. When I am exhaling, the system is drawing 300mA from the battery. When I inhale, the unit draws between 1000mA and 1500mA. The average current is probably around 700 mA. So each hour of use requires about 0.7 amp-hours. My battery is rated at 35 amp-hours, and I have already gotten 38 hours on a charge. I am very happy with this product and looking forward to enjoying camping trips and surviving power outages. This unit directly converts 12VDC to 24VDC. That is much more efficient than converting to 110VAC and then back to 24VDC. If you want to get to longest runtime from your 12V battery, this unit will not disappoint you.

TheResMed 12volt to 24 volt DC converter will run the ResMed S9 for 3 to 4 minutes then shuts down power delivery. I tried this converter in my RV with 200 Amp hour deep cycle batteries, and at home with a 120 Amp lithium ion battery source. The converter fails miserably powering the ResMed S9 and humidifier. Not as advertised.

Headgear is great at one third price I have been getting billed haven’t tried 12v adapter yet but will come in handy when boon docking

I used smaller 12V batteries, They did not last the night, you will need 2 of them. I am sure a car battery would last the night.

This converter is just what I needed to use my bi-pap machine while traveling. Shipping was fast and packaged very well. I had an online chat prior to purchase and it was a very good experience.

my vpap would not stay powered consistently with this adapter. It kept turning on and off. When I talked to customer service they said that the adapter has issues with giving the machine enough power when the humidifying chamber is attached and in use and that it should work fine without the humidity chamber but I had bought the product expecting it to work with the humidifier, especially when the product information had specifically said it was compatible to use with the humidifier.

The cpap seems to be sensitive to voltage changes, ie. when the heater starts and stops. Wakes you up when it momentarily stops. Doesn't happen on AC.