Like Camping?, or Concerned about power outages short term or long? If you use CPAP for OSA (Obstructive Sleep Apnea) then you may want to consider the Zopec Explore CPAP Batteries. These CPAP batteries can be set up so that ANY time you have a power outage, the battery will kick in and automatically begin to run your CPAP and you don't even have to wake up! Long hours of run time on each charge, and they are designed specifically to operate ANY CPAP on the market today. safely, and effectively.