Inogen One G4 External Battery Charger With Power Supply,G4 Battery Charger,Each,BA-403Price: USD314.00 Inogen One G4 External Battery Charger With Power Supply is the ideal power source for recharging your additional Inogen G4 single and double batteries. Batteries can be fully charged outside the G4 unit in under 5 hours. A fully depleted G4 single cell battery can be charged to full in 2.5 hours and a fully depleted G4 double cell battery can be charged to full in under 5 hoursOther products from H e a l t h P r o d u c t s F o r Y o u |