u1 35ah batteries? s-9 w/o humidifier How long?

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roadkingrick
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u1 35ah batteries? s-9 w/o humidifier How long?

Post by roadkingrick » Thu Oct 23, 2014 12:12 am

any ideas on the time I could get out of a u1 35 amp battery with my S9 ?

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Re: u1 35ah batteries? s-9 w/o humidifier How long?

Post by chunkyfrog » Thu Oct 23, 2014 4:58 am

It depends on your pressure. Do be sure the power is compatible.

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Re: u1 35ah batteries? s-9 w/o humidifier How long?

Post by Sludge » Thu Oct 23, 2014 5:07 am

You Kids Have Fun!!

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Re: u1 35ah batteries? s-9 w/o humidifier How long?

Post by CapnLoki » Thu Oct 23, 2014 5:22 am

roadkingrick wrote:any ideas on the time I could get out of a u1 35 amp battery with my S9 ?
Too many variables to say for sure - which model? what pressure? inverter or DC-DC converter? Assuming Auto at pressure 10 with converter, about 5-7 nights. If you run the battery to zero repeatedly you will severely limit the lifetime,

refer to
http://www.resmed.com/assets/documents/ ... lo_eng.pdf

For other readers, a U1 is a common scooter/electric bike AGM battery, cost is about $65.

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roadkingrick
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Re: u1 35ah batteries? s-9 w/o humidifier How long?

Post by roadkingrick » Thu Oct 23, 2014 11:37 am

im on an s9, w/o humidifier probably. 13-19 on auto

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Re: u1 35ah batteries? s-9 w/o humidifier How long?

Post by palerider » Thu Oct 23, 2014 11:42 am

roadkingrick wrote:im on an s9, w/o humidifier probably. 13-19 on auto
which of the 13 models of s9? it makes a difference.

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Re: u1 35ah batteries? s-9 w/o humidifier How long?

Post by CapnLoki » Thu Oct 23, 2014 2:58 pm

roadkingrick wrote:im on an s9, w/o humidifier probably. 13-19 on auto
Your picture indicates S9 VPAP Auto BiLevel which should be able to use the DC-DC converter. At your pressure it will use a bit more power so I might guess 4 nights would be the max. Remember that while the battery is rated at 35Ah, at about 75% depleted the Voltage will be down to about 11.5, so you shouldn't plan on getting every drop of power out of it. If you use an inverter then 2-3 nights might be the limit.

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roadkingrick
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Re: u1 35ah batteries? s-9 w/o humidifier How long?

Post by roadkingrick » Wed Dec 10, 2014 1:51 pm

well just for report back , I got a 32 amp sealed AGM battery, 20lbs fits in a little cooler playmate. I used it two nights , about 8 hours each on my s9 w/o the humidifier. it was still reading 12.3 volts the 3rd night so I know another night was easily doable. That was with a dc to dc converter , 89 bucks . The battery I got for 32 bucks at battery specialists used but with one year warranty. I looked at the harbor freight battery 60 bucks and wasn't really impressed. Got a battery tender at Costco for 29 bucks on sale. And just for giggles I picked up a 1.5 amp solar charger at harbor freight. So with the battery alone I figure easy 3 nights an a camping trip, if I use the solar charger during the day to refresh the battery who knows? I suppose I could plug it into the car or bike and let it run for 30 mins also , but I'm real impressed with this little battery. light enough to put on my bike and sealed so it wont spill. I'm kind of jazzed about going camping again.

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