- $108.99Inogen One G4 Replacement Column Pair | for Portable Oxygen Concentrator G4 | Sieve Beds High Flow (Flow Setting 1-3) Oxygen AccessoriesAmazon
- $2,245.00Inogen One G4 Portable Oxygen Concentrator. Authorized Dealer in the US.Newegg
- $34.99HKY 19V AC Adapter Compatible with Inogen One, Inogen One G4 G3 G2 Portable Oxygen Concentrators, Replacment Inogen One AC Power Supply Model# BA-301 BA-401 ADP-120RH BAmazon
- $32.99Replacement Auto Car Charger for Inogen One G2 G3 G4 Portable Oxygen Concentrator; Inogen BA-306, BA-302Newegg
- $35.99New 120W Charger Inogen One G5 G4 G3 G2 Portable Oxygen Concentrator BA-303 BA-302 BA-301 BA-107 BA-106 BA-403 BA-503 BA-516 BA-401 AC Power Supply Adapter Cord Charger 19V 6.3A Mango 100-19BAmazon
- $26.9912V Car Charger Replacement for Inogen One G1 G2 G3 G4 G5 Portable Oxygen Concentrator BA-306 BA-301 BA-302 BA-303 with Additional Fuses ¡¾8.3Ft, UL TestedAmazon