Designed to sleep with CPAP/BiPap for 24 – 32 hours WITHOUT Heated Humidifier and Heated tube (depending on settings, see image for run time table). Uninterrupted sleep through Power Outages. Fast Car Charger Included! For extended power outages, powerful Solar Charger (40W, 60W, 100W) available for separate purchase. Very versatile for power outages, can run lift chair and internet modem, laptops, phone to stay connected.