Hello Guest, Welcome to Apnea Board !
As a guest, you are limited to certain areas of the board and there are some features you can't use.
To post a message, you must create a free account using a valid email address.

or Create an Account


New Posts   Today's Posts

Prisma 20A
#1
Prisma 20A
Hello, I am looking for a powerbank or battery for travel for my Weiman Prisma 20A. Do you have information where I can find them.
Post Reply Post Reply






Donate to Apnea Board  
#2
RE: Prisma 20A
Hello, welcome to the board.

It seems like Weinmann Prisma 20A uses a 37v 2.5A DC power input. (Part# WM24133)

[Image: K34Ydwa.jpeg]

That's quite an unusual power requirement - my Resmed AirSense 10 requires a 24v 3.75A input with a 7.4mm x 6.0mm DC barrel connector that it shares with many Dell/HP laptops. The connector for your machine also seems quite unusual, and not readily available as a spare part, as is present in the manual:

[Image: kZimBUg.png]

The manual (pg. 21) recommends using the provided AC/DC power supply with a DC/AC inverter for mobile use, specifying the use of the WM24616 for 12v DC input, or WM24617 for 24v DC input. However, I'm sure you can use any quality DC/AC inverter with a pure sine wave (not modified sine wave, corrected sine wave, square wave, etc.) AC output for your machine, provided it can sustain the requirements of your provided AC/DC power supply.

That should suffice as a ready-made solution that you can hook up to a lead-acid/lithium battery, at the relative expense of portability and weight.

You could also go the route of putting together a custom power solution that meets your runtime and weight requirements, but that would require sacrificing an AC/DC power brick for the power supply cable (and taking care to fulfill any odd signaling requirements à la ResMed) and a bit of DIY electrical work, but would make for an interesting weekend project if you're so inclined. Remember that AC/DC conversion incurs significant losses compared to DC/DC conversion, and having purely DC/DC conversion in a custom battery pack would allow you to extract the maximum power from your battery.

So, easy plug-and-play solution:
  • Prisma 20A
  • connected to Included AC Power Supply
  • connected to AC/DC Pure Sine Wave Inverter (12v) capable of a sustained (not peak) load of 360W or greater
  • connected to 12v SLA (preferably deep-cycle capable) battery or lithium battery pack capable of outputting ~12v, or a 12v automobile/airplane outlet.
You will also need a charger to charge the battery, and the battery capacity should be selected based on how many hours you are planning to use the device between charges, and whether you have any power-consuming features (humidifier, heated hose) set to on, or at higher levels.

You can also simply buy a portable power station, such as the Jackery Explorer 240 or Explorer 500, and plug in your power supply directly into that for an even easier solution. Amazon Germany has these available for sale.


[Image: 71aqzq2lWKS.__AC_SX300_SY300_QL70_ML2_.jpg]
Post Reply Post Reply
#3
RE: Prisma 20A
Hello @rfburns, thanks for your info. I will consider the solution with the power station.
Post Reply Post Reply


Possibly Related Threads...
Thread Author Replies Views Last Post
  Lowenstein Smart Max Prisma leakage lindylou 0 174 08-02-2022, 04:12 AM
Last Post: lindylou
  [Equipment] PR System One replaced with Löwenstein Prisma 25S tolnaiz 18 1,599 04-28-2022, 03:20 AM
Last Post: tolnaiz
  Weinmann / Löwenstein Prisma 20A Auto CPAP: APAP settings: standard vs. dynamic Costas P 4 8,438 08-18-2021, 03:51 AM
Last Post: Don505
  Prisma NIV advice Johnboy 14 668 07-30-2021, 04:58 PM
Last Post: SarcasticDave94
Gross Changing from Philips to Prisma due to recall Naama 1 598 06-28-2021, 06:38 AM
Last Post: OpalRose
  [Equipment] Is Prisma 20A quieter than Airsense 10 autoset biorn 16 2,108 03-25-2021, 06:13 PM
Last Post: biorn
  Prisma 20a vs Airsense 10 autoset biorn 0 698 03-11-2021, 10:37 PM
Last Post: biorn


New Posts   Today's Posts






About Apnea Board

Apnea Board is an educational web site designed to empower Sleep Apnea patients.