Battery Pack For CPAP

[securespark]

Got a bit of a headache trying to find a reasonably priced battery pack and a lead for my DreamStation CPAP machine.

I'm going on a flight so need a battery pack that is less than 100Wh, IE 27,000mAh. And it either needs to have a ciggie lighter socket for the Dream station 12V power lead (which is out of stock) or some other output socket, but in that case, I would need a compatible lead supplying too.

I can find such items, but they are £350 (without lead) and £450 (with a lead).

I am expecting to pay a lot for this gear, but that seems a great deal to pay.

 

[crystal ball]

Which airline?

 

[RandomGrinch]

Usb power bank and one of these?

https://www.amazon.co.uk/KUNCAN-Cigarette-Lighter-Socket-Converter/dp/B074V35WBJ

What are the power requirements of the CPAP?

 

[securespark]

Which airline?

Emirates. Although their website says they have power, I have been told to bring a battery pack.

Usb power bank and one of these?

https://www.amazon.co.uk/KUNCAN-Cigarette-Lighter-Socket-Converter/dp/B074V35WBJ

What are the power requirements of the CPAP?

Sorry.

 

[RandomGrinch]

Quite a bit then!
So a 100Wh battery will only get you an hour and a bits worth of use?

 

[securespark]

I've not actually worked it out....

 

[securespark]

It's been a very long day. I'm struggling...

Shoulda got grade 1 CSE Maths.

Philips say that my DreamStation should use 60W, not 80W.

So, 60W for 8 hours is 480Wh

I'm tired!

Sorry.

 

[securespark]

The thing is the airline have effectively limited to a 27,000mAh battery. I suspect these airline approved batteries are meant to be used with lower powered CPAP machines meant for flight?

 

[securespark]

This one is not available either, but it reckons it is 100Wh and can give 24h use with a DreamStation.

 

[securespark]

This one says it will run CPAP as long as it's no more than 60W.

It also has a 12/24V adjustment. But how does it output 12/24V on a USB A?

https://www.amazon.co.uk/Wireless-C...1&psc=1&mcid=572d1eb3a7913aa8b1e719d5e6195b81

 

[hllns]

This one says it will run CPAP as long as it's no more than 60W.

It also has a 12/24V adjustment. But how does it output 12/24V on a USB A?

https://www.amazon.co.uk/Wireless-C...1&psc=1&mcid=572d1eb3a7913aa8b1e719d5e6195b81

It's not on the type A connector, it'll be on the type C but type C requires negotiation which the device or a breakout board has to do. Powering off a type C in some way is probably the way to go though as those types of battery packs are more "mainstream" so will be cheaper and more available.

 

[hllns]

You can get usb-c -> DC leads pre-wired which is presumably the "CPAP charging cable" they're referring to (not supplied)

 

[RandomGrinch]

It also has a 12/24V adjustment. But how does it output 12/24V on a USB A?

This particular unit, uses the in/out port for the 12/24V output...

And there are some caveats (which will be similar to any 100Wh battery pack) to achieve the claimed 10 hours operating time...

Whatever solution you go for, it may be worth trialling it at home first to see how you get on.

 

[hllns]

Whatever solution you go for, it may be worth trialling it at home first to see how you get on.

And measure how much current it needs rather than the plated value, 6.6A is a substantial draw if it's doing it continuously from a battery but I bet it's not

 

[RandomGrinch]

And measure how much current it needs rather than the plated value, 6.6A is a substantial draw if it's doing it continuously from a battery but I bet it's not

And I bet, that's why turning off the heating and humidification modes makes a big difference.