[Equipment] Battery backup which comes on automatically for BiPap w/ oxygen and humidifier?

[Helena]

Invacare. It is not the very smallest model, but the next one up.

[Helena]

If you know about setting up a DIY battery backup using a marine battery, a battery charger, and connectors, could you please advise?

I've read in a couple of threads about needing some kind of fuse, too.

I will get help to set it up and connect it, but I need to know what devices and tools I need to buy.

If you don't mind another question....

Thanks very much.

[Crimson Nape]

I tried to assemble a picture of the items that I believe a Philips CPAP will need. The solderless eyelets (lower right) would replace the big battery clamps in the item above them.  These items would then be attached to the threaded posts on the battery.  The Battery Tender comes with a cable that has these eyelets to attach to the battery as well.  Although my system is a Resmed and a little different in setup, I have been constantly using this configuration since 2017.  The power can go off during the night and I will never know it.

I hope the picture helps.  

- Red

[Helena]

Crimson Nape, how very very kind of you. Thank you.

[staceyburke]

Search Amazon for Zopec EXPLORE 5500 CPAP Battery Backup Power Supply. There are quite a few that will do what you want. 

[becker44a]

Hi Helena,
I am at this point a retired IT network engineer.  Before retirement, we used to install battery backup units for our customer's computers.  Especially for some larger servers, expected to stay up 24/7/365, these could have fairly high capacity.  We went thru many brands, such as Tripplite, APC, Best Power, etc.  All would do the job initially, but they all had a problem with battery life.  These UPS batteries would degrade within a couple of years, and the units would need replacement.

Finally we hit on Cyber Power.  These devices had all the same functions of the other brands, but their batteries stayed healthy far longer.  I only saw a very few fail with battery issues, and those were the very bottom of their line, lowest capacities, etc.

I have several Cyber Power UPS units in my house now, and they have all been going for several years, without issues.
Hope this helps.