ResMed S9 with a battery?

[idamtnboy]

OK, now for batteries. It seems like "jumpstart" packs are popular because you get a sizable lead-acid battery and charging all in one package.

However, running a VPAP all night long is a "deep cycle" type of load. Since these packs are sold for jump starting, don't they contain a "starting" type battery that is optimized for brief starts and then recharging?

Just like the "starting" battery in a car, it seems like this would soon deteriorate if a steady load was applied for long periods between charges.

Or maybe the battery is a "marine" style that supports both steady loads (trolling) and high loads (starting the boat engine). As I understand it, a "marine" battery is a hybrid with both deep cycle and starting characteristics.

I am thinking I may buy a premium AGM battery and a Battery Minder to charge and maintain it.

http://www.bestconverter.com/12-volt-2- ... p_139.html

A large investment. Any suggestions appreciated.

NAPAonline.com has a number of chargers available. Take a look at them before you go for this one. I think it's more money than what you need to spend. I use a marine deep cycle battery from Costco, 115 amp-hr. It'll run my S9 Autoset w/ humidifier up to 4 nights, especially if I remember to disconnect the inverter during the day. The inverter apparently draws some power even when turned off. If you're going to use the battery only occasionally the NAPA 2 amp trickle charger will work good. It costs about $35, I think. I use one on my motorcycle and ATV batteries and the marine battery to keep them topped off. It won't overcharge the battery. One thing I learned is you cannot fast charge a deep cycle battery like you can a starting battery. It'll take almost all day to charge back what you discharge during the night.

[squid13]

I built this one that John Fisher designed and it works like a champ. viewtopic.php?f=1&t=89123&p=817957&hili ... up#p817957 If your using a ResMed S9 this is what I used to power the machine. https://www.cpap.com/productpage/DC-Con ... hines.html

[J4900]

Thanks for the info!

[Jmizell2]

The resmed S9 plug is similar to many computer plugs but the pin out is different. If you use a computer cord you will damage the power supply on your resmed

[chunkyfrog]

The Resmed power plugs for S9 and for Airsense 10 are NOT interchangeabe with one another,
---or anything else! They are completely proprietary.
Any substitution ensures disaster.
Nice business plan.

[palerider]

The resmed S9 plug is similar to many computer plugs but the pin out is different. If you use a computer cord you will damage the power supply on your resmed

I've never seen anything else using the resmed s9 plug, though it is something you can get from a well stocked supplier.