Portable Oxygen Concentrator
These machines weigh around 2-3 kg and are basically used while travelling or during a flight. They can provide continuous flow only upto 2 lpm. For higher intermittent flows there is burst mode which only delivers Oxygen when patient is inhaling and it can provide upto 6 lpm. eg. Philips Respironics SimplyGo , Philips Respironics SimplyGoMini
1. Light weight , can easily be used while travelling.
2. Have rechargeable batteries that provide a decent backup even without a nearby power source.
1. Can provide continuous flow only upto 2 lpm.
2. Burst mode gives oxygen only when it detects the breathing of the patient which is sometimes very difficult to do while sleeping.