Mike I have ordered one of the power meters. By the way I spent 38 years with an electric utility as a Technician and later as manager of a commercial three county utility provider. Seen and done a bit of everything?
Okay, results from a second night. Again a ResMed Airsense 10 CPAP on a 120VAC to 24VDC power brick running for about eight hours with heated tube and humidification turned off. Data over approximately 22 hours: KWh 0.158 (vs. 1.170 with heaters on), low wattage 2.2, high 16.9 (vs. 1473 with heat). Incoming voltage 120.3 at 60 Hz. A difference of 1.012 KWh! Another observation: With the machine turned off it continuously drew between 2 and 5 watts. This may be due to it transmitting data to ResMed.
Mike, I have a ResMed Airsense 10 CPAP which has a 120VAC to 24VDC power brick. I run the heated humidification and heated air tube. Last night over 8 hours it used 1.170 KWh with a maximum draw of 1473 W at 119.6 VAC. I will set it up again with heat and humidification turned off and see what I get.
I have a Dreamstation 2 Auto CPAP. Using the Kill-A-Watt, I measured .08 kWh for a 24-hour period. Note: the machine was "in use" for approximately 9 hours, i.e., blowing unheated air. I do not use the heater function (tank and heated hose) which would dramatically increase the power used.
Chris: The oxygen concentrater is nameplated 3 amps @120 volts. , 360 va the ups I bought would only run it 15 minutes. It was rated 1500 va. I didn't notice that until my test turned out as it did? I knew better but I wasn't paying attention? Might run your
CPAP 20 minutes? Now I'm not having much luck convincing Amazon to ok returning?? ouch I guess it would make someone a trotline weight? Anyone need a 1500 va ups? I would probably make someone a deal but they'll have to pay the shipping.
I had 4 6 volt batteries in my MH with the inverter I only watered the batteries about once a month and with my watering system usually didn't add more than a quart of water each time. Non use but on charge only every three months and usually not a lot of water less than a quart? The 4 batteries would last all night with furnace fan running as needed. I don't know what size the fan motor was? We would use everything except the MW with the inverter and batteries and very seldom woke up with batteries discharged.
Mike your picture of the oxy concentrator is same as the one I'm using. I have a 2000w inverter and a set of 6 volt batteries(they are probably not usable). I could purchase another set 2 or 4? Set this up as a ups setup for my concentrator. What is the ah capability of 2 6 volt golf cart batteries? The inverter would keep the batteries charged until it switched to providing backup power?
Frank, figuring this out will make a great article. I’ll contact your Oxygen Concentrator manufacturer for actual kWh/day usage info. From there I can backtrack into how much battery storage you’ll need. And I think that AGM batteries would be s better solution than Flooded Lead Acid, simply due to the reduced maintenance of AGM batteries. You probably don’t want to be filling the FLA batteries with distilled water every month.
Mike, I am having a challenging issue. I have a 2017 Fleetwood Bounder Model H, with 3 slide outs. The living-rooom/galley slide failed to retract and in the process of getting it fixed it was determined that the Power Gear dual sync controller was bad. My challenge is finding a replacement.
Is it possible to rebuild or repair the controller? Or where could I find one.
thank you for your response. I don’t know exactly what I need either. However, I need a controller that will provide the same function as the original. No one seems to know about that. There are numerous RV less than 10 yrs old that have that same issue. No one seems to have a solution.
My CPAP (No Heater) draws 3.5 watts on standby and 8.5 watts running. Yep that's it! Measured with Kill-a-watt. so Assuming 8 hrs of usage 3.5x16=56 Plus 8.5x8=68 for a total 24 hr consumption of 124 W/hrs. That is plugged into 120v and using the included wall wart. The machine actually runs on 12VDC. I have the 12V power cord that I use in the RV. CPAP with a humidity heater will likely be quite different but in FL Humidity is the last thing you need.
Mike I have ordered one of the power meters. By the way I spent 38 years with an electric utility as a Technician and later as manager of a commercial three county utility provider. Seen and done a bit of everything?
Okay, results from a second night. Again a ResMed Airsense 10 CPAP on a 120VAC to 24VDC power brick running for about eight hours with heated tube and humidification turned off. Data over approximately 22 hours: KWh 0.158 (vs. 1.170 with heaters on), low wattage 2.2, high 16.9 (vs. 1473 with heat). Incoming voltage 120.3 at 60 Hz. A difference of 1.012 KWh! Another observation: With the machine turned off it continuously drew between 2 and 5 watts. This may be due to it transmitting data to ResMed.
Mike, I have a ResMed Airsense 10 CPAP which has a 120VAC to 24VDC power brick. I run the heated humidification and heated air tube. Last night over 8 hours it used 1.170 KWh with a maximum draw of 1473 W at 119.6 VAC. I will set it up again with heat and humidification turned off and see what I get.
I have a Dreamstation 2 Auto CPAP. Using the Kill-A-Watt, I measured .08 kWh for a 24-hour period. Note: the machine was "in use" for approximately 9 hours, i.e., blowing unheated air. I do not use the heater function (tank and heated hose) which would dramatically increase the power used.
I’ve heard that the heater/humidifier function uses a lot of electricity, but I’ve never had the chance to measure it….
Chris: The oxygen concentrater is nameplated 3 amps @120 volts. , 360 va the ups I bought would only run it 15 minutes. It was rated 1500 va. I didn't notice that until my test turned out as it did? I knew better but I wasn't paying attention? Might run your
CPAP 20 minutes? Now I'm not having much luck convincing Amazon to ok returning?? ouch I guess it would make someone a trotline weight? Anyone need a 1500 va ups? I would probably make someone a deal but they'll have to pay the shipping.
I had 4 6 volt batteries in my MH with the inverter I only watered the batteries about once a month and with my watering system usually didn't add more than a quart of water each time. Non use but on charge only every three months and usually not a lot of water less than a quart? The 4 batteries would last all night with furnace fan running as needed. I don't know what size the fan motor was? We would use everything except the MW with the inverter and batteries and very seldom woke up with batteries discharged.
Mike your picture of the oxy concentrator is same as the one I'm using. I have a 2000w inverter and a set of 6 volt batteries(they are probably not usable). I could purchase another set 2 or 4? Set this up as a ups setup for my concentrator. What is the ah capability of 2 6 volt golf cart batteries? The inverter would keep the batteries charged until it switched to providing backup power?
Frank, figuring this out will make a great article. I’ll contact your Oxygen Concentrator manufacturer for actual kWh/day usage info. From there I can backtrack into how much battery storage you’ll need. And I think that AGM batteries would be s better solution than Flooded Lead Acid, simply due to the reduced maintenance of AGM batteries. You probably don’t want to be filling the FLA batteries with distilled water every month.
Give me a few days to figure this out…
Mike, I am having a challenging issue. I have a 2017 Fleetwood Bounder Model H, with 3 slide outs. The living-rooom/galley slide failed to retract and in the process of getting it fixed it was determined that the Power Gear dual sync controller was bad. My challenge is finding a replacement.
Is it possible to rebuild or repair the controller? Or where could I find one.
Not sure exactly what you need, but perhaps these guys have one.
https://rveliteparts.com/products/rev-rv-08544368-power-gear-slide-out-controller
thank you for your response. I don’t know exactly what I need either. However, I need a controller that will provide the same function as the original. No one seems to know about that. There are numerous RV less than 10 yrs old that have that same issue. No one seems to have a solution.
My CPAP (No Heater) draws 3.5 watts on standby and 8.5 watts running. Yep that's it! Measured with Kill-a-watt. so Assuming 8 hrs of usage 3.5x16=56 Plus 8.5x8=68 for a total 24 hr consumption of 124 W/hrs. That is plugged into 120v and using the included wall wart. The machine actually runs on 12VDC. I have the 12V power cord that I use in the RV. CPAP with a humidity heater will likely be quite different but in FL Humidity is the last thing you need.