Just because you require supplementary oxygen doesn’t mean you have to be tethered to an outlet or spend your day out watching the battery meter. The ActivOx 4L from Inova Labs has the most powerful battery around, lasting around 10.25 hours on a single charge. Where the batteries of some systems last just a few hours, the ActivOx 4L helps you enjoy several hours out of the house or at work. You can also purchase an additional external battery that can provide you with three more hours of run time, in case you need to travel or spend time away from an outlet.

The ActivOx 4L is one of the lighter units, weighing just 4.8 pounds. Only the Inogen One G4 and the Caire Medical Airsep Focus are lighter. It also features a compact size, measuring 9.05 inches wide, 7.875 inches tall and 4.38 inches deep. However, it does not have a built-in handle like many other options do, so you’ll have to rely on the carrying case to carry it easily. Inova Labs does offer multiple carrying case options, though, including a simple case with a handle – similar to a briefcase – or another style that works like a cross-body messenger bag.

From the display interface, you have access to a variety of basic and advanced settings. You can turn the device on, adjust your flow rate and mute your alarms with the on-board buttons. From the display screen, you can view the operating status, battery levels, breath detection symbol, mute symbol and various settings. Simple arrow keys help you navigate through these various options.

The Auto Mode feature is beneficial as it automatically adjusts to your individual breathing – whether it’s a fast breathing rate or a series of shallow breaths – to ensure you’re properly supported with the correct volume of oxygen.

With Inova Labs’ ActivOx 4L, you can enjoy extensive battery life, which is why it’s a great oxygen concentrator option for those who still need to go to work or travel frequently. Its multiple carrying case options make it easy to take it with you, and the extensive settings interface gives you ample control over various settings and preferences.

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