ResMed Battery Guide

I hit the jackpot talking to their customer support!

Dear Readers,

I wasn’t expecting much when I called the ResMed customer support desk yesterday. After all, my experience last week with Magnum tech support left me with little hope that the ResMed desk would have any useful info on battery usage. So after getting in the queue with 19 others ahead of me I settled in for a long wait.

But I advanced in line quickly, and after 20 minutes on hold I had a knowledgeable support person on the phone. And not only did they tell me about their Battery Guide, they also connected me with the department that might be able to get me a CPAP machine to test myself.

Read the full battery guide HERE.

What does this all mean?

These numbers correlate with most of the field data you’re sending me. But the one thing this chart doesn’t take into account is the additional inverter/charger losses you’ll experience if you use a 120-volt AC wall-wart plugged into an inverter in your RV. So it’s best to buy their 12-volt to 24-volt power cord. That will save you perhaps 50% of battery power.

More on this later… Please Stand By

If I do get a test unit from ResMed, then I will do some formal testing in my FunkWorks Lab with and without inverters in the path, and update you here. But in the meantime, I’ve learned much from my 10 minutes on the phone talking to their help desk.

Let’s play safe out there. - Mike