Embrace The Of Multiple Charging With EA200 Portable power generation on-the-go! portable power station EA200 is designed for outdoor activities power supply. Small size (5.6lbs, 8.2×4.3×6.2 inch) with big capacity (150Wh), the most portable all-in-one power station can fulfill your demand for camping or emergency. FAQ: Q1: What devices can EA200 power? A: Please note that the AC output port can charge devices less than 200W, DC output can charge devices total less than 168W; Once exceeding, this portable power generator will be in protection mode. Q2: How to calculate the working time for your devices? A: 1. AC output working time=151wh * 0.9/the power of your device For example, assume your power of device is 20W, working time will be 151wh * 0.9/20w=6.79 hrs ( rough calculated ) 2. DC and USB output working time=151wh * 0.95/the power of your device Q3: AC and DC output, which way is to power my CPAP machine? A: , for Optimal Use with CPAP.EA200 power station can power your cpap by two ways: 110V AC plug and 12V DC plug.Strongly recommend that CPAP users use DC to DC converter to work with this unit and turn off or remove the heater/ humidifier, it should last longer.To buy the DC converter, please consult with your CPAP supplier or simply find us for a guide.Same as others, like laptop, use DC output will be longer than AC output.