PowerPack

[bmxndad]

I would like to find a PowerPack / Portable Power Supply that does not have an air compressor or the jumper cables.

Is there such an animal?

I need it to run my sleep machine when we camp and kayak.

Anybody know if there is such a thing?

Thanks,

Ross

[darthandy]

There are various types of power inverters that change 12 V. vehicle power to 120 VAC (Household) power, if that's what you need. Many of them plug into a lighter type power socket. The problem there, of course is that they will run the battery down over time. Not sure if that is what you're looking for, but it's a start.

[friesman]

This only gives a laptop 2 hours but not sure what you need for requirements.

http://www.duracellpower.com/portable-power/portable-chargers/powersource-mobile-100.aspx

 

brian

 

I found something else here that might work better for you [ame=http://www.youtube.com/watch?v=7g17KuAGexM]YouTube - DIY Portable Power for Strobes Monolights Vagabond II Alien Bees Build your own[/ame]

Edited January 3, 2011 by friesman

[dray]

I would like to find a PowerPack / Portable Power Supply that does not have an air compressor or the jumper cables.

Is there such an animal?

I need it to run my sleep machine when we camp and kayak.

Anybody know if there is such a thing?

Thanks,

Ross

 

you could take the cheap jump starter from Harbor freight you could open it up and remove the cables

i have had mine for 2 years and still works great it has cables a light and 12volt outlet thats about it

http://www.harborfreight.com/12-volt-jump-start-and-power-supply-38391.html

[bmxndad]

I have heard from a couple of people that swear by the Harbor Freight PowerPacks.

The price is right.

I will need to have a serious look at one of those.

Thanks for the suggestions.

Ross

[rumboogy]

just a suggestion...get an external battery pack for your iPhone if you have one and then download the SOUND MACHINE APP.

[Owen]

I would like to find a PowerPack / Portable Power Supply that does not have an air compressor or the jumper cables.

Is there such an animal?

I need it to run my sleep machine when we camp and kayak.

Anybody know if there is such a thing?

Thanks,

Ross

 

Sleep machine??? Cpap??? what are the power requirements? What does it say on the label?

 

This information would be helpful.

[Pegasus1300]

Ross check with your resp therapist or the medical supply house you got your c-pap from.There are portable ones and power packs available to allow you to camp. You may even be able to rent one for awhile.

[marinakorp]

I drag a deep cycle marine battery with me... can run for a few days off of that with the CPAP - no problems.

 

I put it on a charger when I get home.

 

This is a bit heavy, and hard to do on a bike...so the above is for car camping, or for an emergency power outage.

 

When I motorcycle camp (as of right now) I usually get a site that has electric and take a small extension cord. It would be nice to go off the grid once in a while.

 

When I get the trailer setup... I want to put a solar cell on the top and charge the marine battery as I drive... top it off before I make camp at the next site.

[Flyinfool]

 

When I get the trailer setup... I want to put a solar cell on the top and charge the marine battery as I drive... top it off before I make camp at the next site.

 

While the solar cell is great for topping off as long as you have a big enough one or maintaining the charge. You might want to consider adding a wire to the trailer connector to charge the battery from the bikes alternator. That way if you get a couple of cloudy days you will not run out of power.

[hunter 1500]

I have one made by resmed that I can get about three nights out of before it has to be recharged. Works great and is fairly compact.

[marinakorp]

While the solar cell is great for topping off as long as you have a big enough one or maintaining the charge. You might want to consider adding a wire to the trailer connector to charge the battery from the bikes alternator. That way if you get a couple of cloudy days you will not run out of power.

 

 

was thinking of one like this mounted on a tagalong...given the dimensions... I may be able to get two on there with little modification.

 

http://www.harborfreight.com/25-watt-monocrystalline-solar-panel-96350.html

 

or

 

http://www.harborfreight.com/15-watt-12-volt-solar-panel-96418.html

 

Not sure if my bike could handle the draw....but worth a shot in a pinch.

 

 

Oh...back on topic... I took a look at the ones made for the cpap... they want over 300 for the battery pack... my battery was a fraction of that...works just fine.

[Flyinfool]

Look on your cpap unit, there should be a nameplate with its power requirements.

If we know exactly how much power is needed it is a lot easier to make recommendations.

 

When they rate solar cells, they list the MAX power output assuming that you are on the equator with the solar cell aimed perfectly at the sun at noon.

 

I have this one from HF and it takes it about two weeks to charge the battery on my RV. I use it more as a maintainer than a charger.

 

The 25W panel will give you a MAX output of 2 Amps but a realistic output of about 1.5A. If that is near the power requirements of your cpap then it should work.

 

But some real numbers from your specific unit will help us help you.

Look for info such as Volts, Amps, Watts.

[Flyinfool]

I did some looking online at a cpap, and it looks like they need 150-200 watts of power from an inverter with a peak of up to 400 watts. This means that it will take a 25 W solar cell 3 to 4 hours to replace each hour of use. In the real world it will take a little longer.

[uechi kid]

I use this one to run my CPAP when we go camping and house boating.

http://www.duracellpower.com/portable-power/power-packs/powerpack-600.aspx

I also bought this solar charger to charge the power pack during the day.

[ame=http://www.amazon.com/Brunton-Watt-Foldable-Solar-Array/dp/B000GEFFBO/ref=sr_1_7?s=automotive&ie=UTF8&qid=1294168047&sr=1-7]Amazon.com: Brunton 26 Watt Foldable Solar Array: Automotive@@AMEPARAM@@http://ecx.images-amazon.com/images/I/415MTjMPYmL.@@AMEPARAM@@415MTjMPYmL[/ame]

[bmxndad]

AC Power Consumption: 100 - 240 VAC, 50/60 Hz, 1.0 A max.

DC Power Consumption: 12VDC, 3.0 A max.

Class 2 Equipment

Mode of operation: Continuous

No replaceable fuses

[Flyinfool]

That makes it easy then.

Since it is already capable of running from 12VDC then all you need is a battery. Axtually from the numbers you posted it is more efficient on 12V than it is on 100-240VAC

A small deep cycle battery that has 80AH (most are bigger than this) means that you will be able to run your cpap for around 19-21 hours on a charge. Figure that the most usable power that you will get from the battery is about 75% of what it is rated for.

So while you are shopping batteries just take the Ah rating of the battery you are looking at and divide by 4 Amps (3A ÷ 75%) to get the approximate run time for your cpap.

 

The 25 W solar cell will take a minimum of 1.5 hours to replace the power from 1 hour of use. Longer if it is cloudy or the sun is lower in the sky.

 

It may be worth it to have both the charging wire from the bike and the solar cell or 2. If you are going to add the charging wire to the bike there are a couple of minor issues to discuss.