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

roadkingrick · 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 ?

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

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

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

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

CapnLoki · 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.

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

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

palerider · 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.

CapnLoki · 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.

roadkingrick · 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.

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

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

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

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

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

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

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

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

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

Humidifier

Additional Comments: currently usin PR system one bipap