Choosing a Battery

CapnLoki wrote: ↑

Thu Mar 30, 2017 3:14 pm

Cables:
The Battery Tender comes with almost everything including fuses (get spares), but you'll need a "cigarette lighter socket" (or maybe two)
http://www.amazon.com/gp/product/B0041CDPQO $9
If you want to charge while using (UPS mode) and/or add on a cell phone charger or second socket, you want a splitter:
http://www.amazon.com/gp/product/B003L643KS $5

Capn, what does the splitter look like? The link is dead. Is it rings or terminals on the battery side, then 5 Battery Tender quick-connects on the other side? Or is it 5 car accessory sockets? Or is it 1 quick-connect to 5 quick-connects?

loggerhead12 wrote: ↑

Fri Apr 02, 2021 7:36 pm

CapnLoki wrote: ↑

Thu Mar 30, 2017 3:14 pm

Cables:
The Battery Tender comes with almost everything including fuses (get spares), but you'll need a "cigarette lighter socket" (or maybe two)
http://www.amazon.com/gp/product/B0041CDPQO $9
If you want to charge while using (UPS mode) and/or add on a cell phone charger or second socket, you want a splitter:
http://www.amazon.com/gp/product/B003L643KS $5

Capn, what does the splitter look like? The link is dead. Is it rings or terminals on the battery side, then 5 Battery Tender quick-connects on the other side? Or is it 5 car accessory sockets? Or is it 1 quick-connect to 5 quick-connects?

Here is a splitter https://smile.amazon.com/Automotive-Con ... s9dHJ1ZQ==

I have a 4 way splitter. 1 from tender to battery, 2nd to a usb charging port, 3rd for the cigarette lighter plugin that powers the cpap, and the fourth to a voltmeter.

-Bill

Air Jordan wrote: ↑

Wed Mar 03, 2021 1:51 pm

Air Jordan wrote: ↑

Fri Jan 15, 2021 2:50 pm

CapnLoki wrote: ↑

Thu Mar 30, 2017 3:14 pm

My Backup Battery Setup
Components of my current home setup copied from a recent post, with a few edits:
UPDATED 5/17/2018

Is there a current update?

I'm wanting something very simple for an occasional one-night power outage. My machine is a ResMed AirSense 10 AutoSet and the humidifier is not a firm requirement. Currently, I am living in the city in a small third-floor walkup that was built around 1910 - closet space nearly non-existent, and storage space, in general, is very tight.

The landlord's daughter and her family live on the first two floors. The daughter sees everything that gets delivered to me. If she would see what looks like a car battery and battery box being delivered, she might unhinge.

OK, guys, check this out. I'm about to order.

I found a ResMed guide that says my AirSense 10 Autoset at pressure 12 will run for 8 hours (plus 50% safety margin) (without heated hose/heated humidifier) on a 13 AH battery. https://document.resmed.com/en-us/docum ... lo_eng.pdf

So, I found a very small 14 AH battery that appeals to my situation (small apartment/Karen landlord) - https://www.batteriesplus.com/productde ... kdc12=14nb ----------- $60 (+shpg??)

I will also buy a ResMed converter - https://www.cpap.com/productpage/resmed ... 0-machines ----------- $85 (+shpg??)

A friend is giving me this charger - https://www.walmart.com/ip/Everstart-Ma ... /493123163 He says it was only used once in an emergency and is still in the box.

I would dearly appreciate if someone would look at this selection. Will it get me through a one-night power outage? If we are ever out more than one night, I'm going to have to do something drastic to cover other issues.

Thanks!

(Wow, the forum has gotten very difficult to access. It took many attempts to get logged in.

No one replied, but everything seems OK. I bought this setup. The day I went to the store, the 14AH was out of stock, so I bought the 18 AH battery for $10 more. The charger topped it off in 15 minutes. I used it overnight and everything went well. The next day, it took three hours to recharge. This surprised me, but it's OK.

A close neighbor has a generator. He said if it ever looks like we will have a power outage for more than one night, he will charge my battery during the day. Very nice neighbor.

wm_hess wrote: ↑

Sun Apr 04, 2021 1:16 am

Here is a splitter https://smile.amazon.com/Automotive-Con ... s9dHJ1ZQ==

I have a 4 way splitter. 1 from tender to battery, 2nd to a usb charging port, 3rd for the cigarette lighter plugin that powers the cpap, and the fourth to a voltmeter.

-Bill

Thanks!

Air Jordan wrote: ↑

Sun Apr 04, 2021 11:05 am

No one replied, but everything seems OK. I bought this setup. The day I went to the store, the 14AH was out of stock, so I bought the 18 AH battery for $10 more. The charger topped it off in 15 minutes. I used it overnight and everything went well. The next day, it took three hours to recharge. This surprised me, but it's OK.

That's good because I bought close to the same setup. I did get a 35AH battery for the same price, though. It should get me through three nights in a pinch. My pressure is a bit higher than yours, though, at 16 inhale/13 exhale.

Air Jordan wrote: ↑

Sun Apr 04, 2021 11:05 am

I bought this setup. The day I went to the store, the 14AH was out of stock, so I bought the 18 AH battery for $10 more. The charger topped it off in 15 minutes. I used it overnight and everything went well. The next day, it took three hours to recharge. This surprised me, but it's OK.

Don't know how much you paid for that setup but this is pretty much the same thing but no assembly is required and you can inflate your tires, charge your phone, have an area lite, power a small AC item, or jump start your car if that is needed - IF you can find one.

viewtopic/t64943/Another-Battery-Option ... ery+option

SAG wrote: ↑

Sun Apr 04, 2021 9:42 pm

this is pretty much the same thing

No, that is not the same thing. You are recommending a jump-start battery. Jordon bought a deep-cycle, mobility battery. She will get years of good service out of it.

Midnight Strangler wrote: ↑

Mon Apr 05, 2021 12:05 pm

SAG wrote: ↑

Sun Apr 04, 2021 9:42 pm

this is pretty much the same thing

No, that is not the same thing. You are recommending a jump-start battery. Jordon bought a deep-cycle, mobility battery. She will get years of good service out of it.

You're right! The Jump Start battery comes already assembled and has more options. The only thing you should do before using is too charge it.

Since there is NO

'One size fits ALL',

this may be an option for those who don't like to put things together, don't have the time or desire to go shopping for all the right parts and the skill or patience to put it all together. Or maybe they need or want something to use tomorrow.

So You're right, the jump starter is a better choice for some people.

My mom has just been diagnosed with sleep apnea and I have an electrical/battery question.

I have a cart that I have the tender and a 100ah deep cycle battery. I can easily roll it from the bedroom to the command module known as the recliner. Once positioned and in command, I can just plug the dc plug connection and go ahead and nap away. I also do this if inclement weather is looming etc. My cabling goes from the tender to a splitter and is split between the cigarette lighter receptacle and the battery. I could physically run it all the time from the dc connection but have not done so. My power supply is pretty stable.

For my mom, I'm thinking of doing something similar but having it perpetually plugged into the battery and run dc all the time. She lives out in the country and power disruptions are not uncommon. By running in dc mode, she will always have a ups, so if she does suffer an outage while sleeping it won't affect her therapy.
I'm wondering if using dc power all the time will be detrimental to any of the equipment. I'm assuming the battery won't last as long but I don't really know what the expected life span of a battery is anyway, so I don't know how much I would be losing.

Are there any other gotchas I need to be aware of?

Thanks!

-Bill

wm_hess wrote: ↑

Sun Apr 18, 2021 10:27 pm

I'm wondering if using dc power all the time will be detrimental to any of the equipment.

I don't see how that would affect the equip life as the AC power cord converts to DC before going to the equip.

As for battery life - as long as you don't over charge it there should be no problem. IMO using this way will last longer than not using the battery and not charging it.

About the "Command Module" - I'm confused whether that is for you or mom. But if it were me I would have a spare cpap and a much smaller battery for that. One 100AH battery should be adequate for extended outages - well let's hope anyway.

A jump start battery for the command post should be sufficient and provide other useful features like USB charge ports, AC converter for small items, a light, an air compressor, portability, and even to jump a car should that need arise.

SAG wrote: ↑

Sun Apr 04, 2021 9:42 pm

viewtopic/t64943/Another-Battery-Option ... ery+option

wm_hess wrote: ↑

Sun Apr 18, 2021 10:27 pm

I'm wondering if using dc power all the time will be detrimental to any of the equipment. I'm assuming the battery won't last as long but I don't really know what the expected life span of a battery is anyway, so I don't know how much I would be losing.

The only downside is you'll be cycling the battery all the time and it may not last as long, but you've already factored that into your evaluation. Shoot, being exercised frequently at the very top of its charge window might make it last longer. Batteries that sit on float chargers (like the Battery Tender) too long without being exercised have issues too, as my fleet of motorcycles will attest.

Those 100AH deep cycle batteries are beasts. There's no better off-grid electrical source when you calculate the $$ per amp hour.

I use an Airsense 10, but I was recently given a Dreamstation Pro. Will the Dreamstation go significantly longer on my 33 AH CapnLoki-rigged battery than the Airsense does? The Airsense can't seem to get through two nights between charges. I can't really figure this out from the Resmed battery guide and the Dreamstation manual -- they seem to use fundamentally different methods for expressing amp draws and battery life.

(Did not get an answer the first thread I posted this on, so I'm posting it on two threads where it might.)

JHC wrote: ↑

Fri Jun 11, 2021 10:49 am

I use an Airsense 10, but I was recently given a Dreamstation Pro. Will the Dreamstation go significantly longer on my 33 AH CapnLoki-rigged battery than the Airsense does? The Airsense can't seem to get through two nights between charges. I can't really figure this out from the Resmed battery guide and the Dreamstation manual -- they seem to use fundamentally different methods for expressing amp draws and battery life.

(Did not get an answer the first thread I posted this on, so I'm posting it on two threads where it might.)

Very few people will have direct experience with your question, they will need to have used both the Air 10 and the Dreamstation, on a battery and in similar configuration. That's a pretty limited pool to draw from.

Perhaps you should be exploring your specific configuration and what you can to improve it.

If you aren't getting two usage days off your device, sounds like one or more of the following:

• You're using heated humidity/hose. Don't.
• You're using an AC inverter. Use a DC cable/converter.
• You're leaving the unit plugged into the battery when not in use.
• Your device is not in AirPlane mode.
• Your battery's capacity is significantly impaired because of a lot of deep discharges.

JHC wrote: ↑

Fri Jun 11, 2021 10:49 am

I use an Airsense 10, but I was recently given a Dreamstation Pro. Will the Dreamstation go significantly longer on my 33 AH CapnLoki-rigged battery than the Airsense does? The Airsense can't seem to get through two nights between charges. I can't really figure this out from the Resmed battery guide and the Dreamstation manual -- they seem to use fundamentally different methods for expressing amp draws and battery life.

(Did not get an answer the first thread I posted this on, so I'm posting it on two threads where it might.)

Are you using the Airsense DC convertor (the one with the cigarette lighter-looking plug) or are you plugging it in to an inverter? The DC converter is very efficient. Inverters are not and will waste a lot of power.

Of the mistakes listed above, the only one I may have been making is not using Airplane Mode. I assume that means disabling the cell phone connection. How do you do that?