• Best Portable Power Station for BiPAP MachineA BiPAP uses about 480Wh a night, half as much again as a CPAP. Nights per charge for 15 power stations, and the four worth buying.
• Best Portable Power Station for CPAPA 300Wh unit falls just short of one 8-hour CPAP night. Here is the nights-per-charge math for 15 power stations, and the four worth buying.
• Best Portable Power Station for CPAP with Heated HumidifierA heated humidifier pushes a CPAP to about 85W. A 768Wh unit then lasts 7.7 hours, so 1,000Wh is the real one-night minimum. Math for 15 models.
• Best Portable Power Station for Home Oxygen ConcentratorA 5-litre home oxygen concentrator pulls about 350W nonstop. A 2,000Wh power station runs it for 5 hours. Runtime math for 15 models.