I'm not sure if this would be helpful but it is an extraordinary battery pack made in the U.S.  It is a 12V 10Ah LiFePo4 battery pack that is sealed and quite durable in the wild.  It can provide both 12V and 5V output and weighs in at about 3 lbs.  It can also be re-charged with a compatible 18V solar panel (although I'm sure other panels that can supply enough voltage would work as well) as well as a wall charger.  LiFePo4 batteries are not quite as dense as LiPo batteries but are much more stable and can be recycled thousands of times.
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P.S.  Regarding using a solar charger: this pack has a built-in charge controller and all kinds of charge and discharge protection.

Thanks for the tech answer MP.
I still think that Biolite is an interesting idea but just not for this application.

My brother has severe sleep apnea and did the whole overnight sleep video monitoring thing.
He got a copy of the video and it was damn scary. He would stop breathing for so long his face would be pale white, and then he’d snort like a buck and start breathing again. The doctors said one of the reasons (among many) that he was so tired all the time was he was only getting about 2 hrs a night real sleep.

He got the best CPAP they had but couldn’t wear it. He would paw it off during the night. He finally went and got that throat surgery which helped some, and maybe would have ended his issues completely but they wanted him to lose that 75-100 extra lbs he carries to make it more effective but he wouldn't make the effort.

Problem started getting worse, so they finally put a pace maker in him last week.
It’s a version that connects via Bluetooth 24/7 to a monitor at the hospital. The Drs set parameters and IF his heartbeat drops below a certain level it will automatically kick in and give him a micro-jolt and get him breathing right again. Better than nothing but still not as good as it could be IF he lost the weight.

He probably won’t die in his sleep from the apnea, but now he’s prisoner to the range of the device.

Going into the wilderness with that problem would indeed be a scary proposition.

solotripper wrote on Jan 12^th, 2016 at 10:40pm:

Technically yes practically not enough to make it worth it.  If you cooked for one hour per meal and 2 meals per day every 12 days you could get one more night.  That is if you could convert 5 volts to 12 volts with near 100% efficiency and the battery charger would work on that light of a charge.   
The unique thing about that stove is because of the fan it probably does not make your pan black. It is heavy though. 

Thanks for the tech help MP.
I see Wally13 says he gets about 2 nights on one battery pack? IF you could partially charge that battery pack every-night assuming you could get that Biolite to convert to 12 volt, wouldn't that extend you run time and need for fewer back-up packs?

There are less expensive batteries ($45 - $50 per 8000mah would require < $60 charger) with comparable output with a life of over 200 recharges. What scares the He22 out of me is these things are in some cases keeping you alive.  What happens if the battery goes dead in the middle of the night?  If there was a alarm (don’t know how loud they are)  that went off when the battery needed to be changed would it wake you up so you could change it. 
The biolite produces about 2 watts @ 5 volts for recharging a cell phone.  If you could convert that 2 watts @ 5 volts to 2 watts @ 12 volts you could use it to charge one of the batteries we are discussing in about 48 hours. 
There are some solar collectors that may work to run the charger mentioned above and charge one of these batteries in a few hours.

These reviews seem very positive about the BioLite's charging ability, the question then is could it charge that Lithium Power-pack?

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MP is the electrical expert here; maybe he could speak to it?
Click on the tech spec tabs.

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These are for the larger Basecamp model.

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Biolite makes many charging type units that “might” be good for things like fish finders  IF they produce enough power?

IF your cooking a evening meal and could keep your batteries "topped" off at the same-time, it "might" be a good thing?

I'm wondering if one could hook up 12 rechargeable lithium AA batteries in series cheaper than their option? MP? I certainly wouldn't want to void the warranty...

All the battery manufactures try to pack their batteries in the smallest pack they can and they all get about the same power density.  So the weight or volume of a certain capacity battery by different companies will be about the same. Using this information on the cpapXchange battery I would estimate it to be about a 8000mAh battery.  That may help if you are considering a different battery system.

I dunno. Perhaps you're correct, a wood burning camp stove is a good way to recharge lithium batteries? It could be. Please run a few tests and post results.

Really

Quote:


Wally 13 thought it was worth mentioning but I get a eye roll and this 

IF you didn't/don't want feedback from the Open Forum you should take it private.