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Amazon.com: UpBright AC/DC Adapter For BA-301 BA301 Inogen One G2 G3 G 2 G 3 Oxygen Concentrator Power Supply Cord Battery Charger (Note: This replacement AC adapter has ONLY home AC input.
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Amazon.com: iTEKIRO Auto Car Charger for Inogen One G2 G3 G4 G5 Portable Oxygen Concentrator; Inogen BA-306, BA-302 (Long DC Power Supply Cord) : Electronics
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