Portable nebulizers provide a convenient way to receive your treatments on the go. All of the following nebulizers can operate with battery power. Most portable nebulizers use a special battery designed to fit the specific model. The Omron Micro-Air is a very small portable unit that operates on two AA batteries - making this ultrasonic model very attractive. Both ultrasonic and traditional compressor methods of nebulization are available in portable, battery operated models. Some of the following models include the batteries, and some require you to choose the option that includes the battery.