Search found 8 matches

by Hey
Sun Mar 28, 2021 3:47 pm
Forum: CPAP and Sleep Apnea Message Board
Topic: Battery solution for Breas Z2 Auto and HDM Z1 CPAP offgrid (backpacking, camping) usage
Replies: 40
Views: 38751

Re: Battery solution for HDM Z1 CPAP offgrid (backpacking, camping) usage

Hi Jasper Looks like a the pro display is monochromatic OLED. Here is the description of a similar sized monochrome display: https://learn.adafruit.com/monochrome-oled-breakouts/power-requirements They say it consumes 20mAh at 3.3V. So it would be 0.02*3.3=0.066Wh per hour. So in one night (8 hours)...
by Hey
Sun Mar 07, 2021 8:57 am
Forum: CPAP and Sleep Apnea Message Board
Topic: Battery solution for Breas Z2 Auto and HDM Z1 CPAP offgrid (backpacking, camping) usage
Replies: 40
Views: 38751

Re: Battery solution for HDM Z1 CPAP offgrid (backpacking, camping) usage

Hi Jas88 Not sure where you live, but Zendure is actually a US based company. They sell the Supertank with worldwide shipping in the factory online shop: https://zendure.com/collections/super-series/products/supertank I got mine from Amazon Germany. So if you are from Europe that might be an option....
by Hey
Fri Feb 19, 2021 5:56 pm
Forum: CPAP and Sleep Apnea Message Board
Topic: Battery solution for Breas Z2 Auto and HDM Z1 CPAP offgrid (backpacking, camping) usage
Replies: 40
Views: 38751

Re: Battery solution for HDM Z1 CPAP offgrid (backpacking, camping) usage

I maybe also should mention those 2 converters here that I am using right now. Not just for the CPAP but also for a laptop and even a second monitor. https://a.aliexpress.com/_msDMit9 https://a.aliexpress.com/_mtOPFE3 Those are not cigarette lighter plugs but they basically do the same thing. The di...
by Hey
Fri Feb 19, 2021 5:34 pm
Forum: CPAP and Sleep Apnea Message Board
Topic: Battery solution for Breas Z2 Auto and HDM Z1 CPAP offgrid (backpacking, camping) usage
Replies: 40
Views: 38751

Re: Battery solution for HDM Z1 CPAP offgrid (backpacking, camping) usage

Hi Pacoverde I hope you will enjoy your trips with your new equipment. In general you can search for "usb pd car charger" on any bigger shopping platform like Amazon, Ebay, Aliexpress. You should aim for one that delivers 3A at 15V = 45W on the PD side. Some sellers advertise bigger numbers by addin...
by Hey
Fri Dec 25, 2020 9:14 am
Forum: CPAP and Sleep Apnea Message Board
Topic: Battery solution for Breas Z2 Auto and HDM Z1 CPAP offgrid (backpacking, camping) usage
Replies: 40
Views: 38751

Re: Battery solution for HDM Z1 CPAP offgrid (backpacking, camping) usage

The power supply provided with the device is 15V.
The official lithium ion battery pack is 4S2P and has a nominal voltage of 14.4V.
Also the same battery is available for Z1 and Z2, so I don't think there is any difference regarding the voltage required.
by Hey
Fri Oct 02, 2020 6:07 pm
Forum: CPAP and Sleep Apnea Message Board
Topic: Battery solution for Breas Z2 Auto and HDM Z1 CPAP offgrid (backpacking, camping) usage
Replies: 40
Views: 38751

Re: Battery solution for HDM Z1 CPAP offgrid (backpacking, camping) usage

Could you tell me how many hours you get from your power bank? For my wife 8 hours of sleep consume about 18Wh. Pressure is mostly between 5.0 and 5.5. Since you can't use the full nominal 100Wh due to conversion losses, this means 4 to 5 nights. Of course higher pressure or sleeping longer means h...
by Hey
Fri Sep 25, 2020 6:30 pm
Forum: CPAP and Sleep Apnea Message Board
Topic: Battery solution for Breas Z2 Auto and HDM Z1 CPAP offgrid (backpacking, camping) usage
Replies: 40
Views: 38751

Re: Battery solution for HDM Z1 CPAP offgrid (backpacking, camping) usage

Yes, that's the Powerbank.

You are mixing up Wh (Watt hours) and Ah (Amp hours).
In short: 27Ah x 3.7V = 99.9Wh

A little less than 100Wh is a quite commen size, because it's the maximum size allowed for a lot of Airlines.
by Hey
Mon Sep 07, 2020 3:29 pm
Forum: CPAP and Sleep Apnea Message Board
Topic: Battery solution for Breas Z2 Auto and HDM Z1 CPAP offgrid (backpacking, camping) usage
Replies: 40
Views: 38751

Re: Battery solution for HDM Z1 CPAP offgrid (backpacking, camping) usage

Hi everybody I have created a very similar setup for my wife and can confirm that a USB power deliver powerbank together with the Z1/Z2 is what I consider the best camping setup available. At first I also went for a DIY cable based on a MS Surface 15V decoy. But I have now found a matching cable on ...