(02-03-2021, 08:30 PM)Sleeprider Wrote: With lead acid chemistry, batteries are very heavy. You have to move to lithium-ion to get power and lightweight. A couple new entries in the market are very impressive for what they offer in terms of 12-volt output and capability for recharge from your alternator or solar power. Either one gives enough power to run any CPAP on DC power for multiple nights, and might make it through a night using the inverter they include. Inverters are very very inefficient, so try not to do that. Do your research and decide what capacity you need. If you avoid the inverter, the 60 watt solar recharger and standard battery packs will go a long way on either the Jackery or the Zero-Gravity power stations. Both are under 6-lbs and the solar packs are under 8-lbs. I'm on the edge for adding to the sailboat and motorcycle to replace less sophisticated units.
I have a Medistrom 12v Li-ion battery pack that came with the Devilbiss machine but it isn't big enough to run the Resmed machine for a whole night WITH HUMIDIFIER, at my settings. I now use it as a power pack to recharge my phone and tablet when camping.
I chose a lead acid battery principally on cost, because a good quality Li-ion battery with enough capacity to run the Autoset (inc Climateline tube and humidifier) for 2-3 nights (i.e. 130Ah) was very expensive.
As for Li-ion batteries generally, I am a little wary of 'cheap' packs, due to stories of poorly-made Li-ion batteries coming out of China, often branded to sound like they're made in the US or Europe. While Chinese manufacturers can make high quality batteries, no doubt, they are not universally so. Whereas a dodgy lead acid battery will just die, Li-ion batteries can burst into flames.