battery backup recommendations as10/as11

[eok361]

i'm lookin for a recommendation for a decent battery backup for both an airsense 10 (24 volts) and airsense 11 (12 volts). i'd like to run both from the dc portion of the machine, to conserve battery life. 

it doesn't need to be top of the line. i know there are plenty of options. i just want to know if anyone has a real world experience with any.

they would mainly stay home in case of power outages, but they might be used for 2 to 3 day camping, too. neither of us use the humidifier, so we can ge the best battery life already. 

thanks

if this needs to be moved to another forum, please do so.

[HappySailor]

Hello eok361,

The AS10 and the AS11 are 24 volt machines. Not 12 volt!

From my experience while camping, the machines use roughly 100 WattHours of energy per night. This is without humidifier and without heated hose.
I've tried the 88.8 Wh battery you can find online. It will barely make it through one night while new. Plus it needs to be freshly charged.

My present battery is a 12 v 700 Wh version. It is heavy (6.5 kg), but since I'm camping with the car, not that important.
I also use a converter from 12v to 24 v with the correct plugs soldered on. The converter was bought from Ali, search for RCNUN 12 24 stepup boost. I use the 3 A version. The 3 A version is a little overkill, but they are all the same weight and size.

Plus a small warning about the capacity markings on most powerbanks. Most will say something like (for example) 12v 10000 mAh. You could translate this to 120 Wh, but this is not true. The mAh (or Ah) are given at 3.7 volts, not at 12 volts. So this powerbank is only 37 Wh.

I've used the plugs from Medistrom Pilot. Bought the cables, cut them, and soldered them on to the converter.
Much cheaper and smaller and lighter than using the official Resmed 12 v to 24 v converter.

Good luck with your search,

Charan

[eok361]

thanks!

[Lucky7]

Any other recommendations?

I'm in the same boat. Scheduled outage last night for maintainence so I decided to blow off using machine.

Welp. HUGE mistake.

[Crimson Nape]

For several years, I have been using the following setup full time.  The power can go out and I never know it.  The battery is large enough for the power to be out for several days.  Other than the battery being obtained from a local auto parts store, all the rest were purchased from Amazon.  The power supply is a KFD 12V 24V Car Charger Vehicle Power Supply 90W and is $30 USD.   I've had real good luck using this brand of power supply.

If you notice, the type of battery I chose has threaded terminals.  This allows for positive connections for the battery tender connector and the power supply harness. By not using any clamps, it will allow the battery box to be fully enclosed with the cover.


- Red

[eok361]

was the image the battery? i don't see it.

edit: they took a minute to load. i see them now. thanks.

[Lucky7]

@crimsonnape, as the kids say "that is LEGIT"

I already have a tender/charger. A Noco. Soooooo yeah

ETA:

I think this is okay:

https://www.oreillyauto.com/detail/c/mar...dcmj?pos=0

My Noco tender has spade terminal attachments. So you just slap them both of them on at the same time? The tender connectors and plug adaptor?

[Crimson Nape]

Since the Battery Tender has a 2 pin connector, I used this pigtail to connect it to the battery.
https://www.amazon.com/Battery-Tender-08...r=8-4&th=1



- Red

[Lucky7]

Suuuuuuuuper cool.

Really appreciate it!

[eok361]

ok, so something like this would suit us better (i think). i don't want to keep a full 12v battery in the house.

https://power.tenergy.com/tenergy-portab...cy-backup/

both machines (as10/as11) are 24v dc, so we'd need cables/transformers that use the smaller ring type connection at the power end. 

it looks like the ones from resmed have the cigarette socket type plugs. are there any that plug into this unit with the smaller plug???

thanks