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Extended Battery (G4^®/Rove 4^™)
$618
The Inogen^® Extended Battery gives you more time to be out and about. Order a new Extended battery today and discover how it can make your daily oxygen use easier and more enjoyable!
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G3 Replacement Particle Filters (Flow Setting 1-5)
$25
These replacement filters are ONLY compatible with Inogen One G3 systems with a FLOW SETTING range between 1-5. If your replacement filters are found on the top two of the four vents, this option is for you. 
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Standard Battery (G4^®/Rove 4^™)
$407
The Inogen standard Battery powers your Inogen^® Rove 4^™ and Inogen One G4^® concentrators when you're away from a power source to give you peace of mind while on the go.
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Inogen At Home Replacement Particle Filter
$33
Replacement filters for the portable oxygen concentrators are sold in packs of two; the replacement for the At Home filter is a single, larger filter.
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External Battery Charger (G4®/Rove 4™)
$342
The Inogen^® External Battery Charger will charge your Inogen One^® G4 and Inogen^® Rove 4^™ batteries.
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