GCE Zen-O 12-Cell Battery Oxygen Accessory here are step-by-step instructions:

here are step-by-step instructions:

There is a handle at the top of the device for easy transportation and storage whenever it needs to be moved

Use the Allen wrench to install the limit screw

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One battery will be perfect for things like exercising

GCE Zen-O 12-Cell Battery Oxygen Accessory here are step-by-step instructions:Weighs 1. 45 Pounds 1 Battery Provides Up to 4 Hours of Battery Life Recharges in Up to 3 4 Hours Can Be Charged 3 Different Ways Truly enjoy the freedom and independence provided by your Zen O portable oxygen concentrator and give yourself more time to do the things you love with the Zen O 12 Cell Battery! Weighing in at 1. 45 pounds, the 12 cell battery gives you hours of extra freedom without weighing you down. And unlike other continuous flow