Inogen One G3 External Battery Charger
Inogen One G3 External Battery Charger is an ideal power source for recharging your additional Inogen G3 batteries. Batteries can be fully charged outside the G3 unit in a couple hours. A fully depleted G3 8 cell battery can be charged to full in 2 to 4 hours and a fully depleted G3 16 cell battery can be charged to full in 4 to 8 hours. The charger includes an AC power supply.