All machines can connect to DC power. Some machines are configured to operate on DC Power and have a DC power outlet. Other machines require AC power and will need an Inverter that turns DC power to AC power.
Having the proper equipment is the biggest key to successfully operating the machine from a battery. For example, if your machine does have a DC outlet and you want to run your machine from a marine battery, be sure to get the correct DC cable for the machine, as well as an adapter cable with alligator clips that fits over the cigarette lighter plug.
CPAP.com sells complete battery kits with everything you need for many machines including the correct cables for those machines and batteries. If you have questions about the specific power needs of your machine, review the 'Power' tab found on the machine's product page, or give us a call at 1-800-356-5221.
I wish they had a longer run time. I have purchased two batteries to mitigate the short run time.
I am purchasing a second battery to allow more nights of camping. I use a S8 and get about... 12 hours of run time from each fully charged battery. This battery is very compact and light. Perfect for camping with Scouts and lets me take my CPAP anywhere. I have tried many batteries over the years and this one is by far the best one yet! more...