The battery will power the portable oxygen cocentrator without connection to an external power source. You can extend mobility time – each battery provides up to 2 hours of operation (setting 2)
When fully charged, a single battery will provide up to 2 hours of operation(setting 2). The battery recharges when it was connected with adapter to AC power. Recharging time is up to 4 to 6 hours for a single battery.