Some feed methods require pumps which can contain dry-cell batteries. Inform your airline at the point of booking so the airline’s special assistance booking unit can check for use before the flight. Most airlines do not provide an aircraft electrical supply for passenger medical equipment and therefore your equipment will have to be battery-powered if you wish to be able to use it during flight. All batteries, including any spare batteries, must meet the airline requirements for carriage, whether carried as hand baggage or in your hold baggage. Remember to have spare batteries incase any part of your journey takeslonger than palnned.
Some feed companies have reciprocal arrangements with their offices abroad & can arrange for a pump and feed to be delivered to your hotel/villa/ apartment. This is usually free but do check. This is very useful, as this pump supplied in the country that you are visiting will be wired for that country’s electricity supply/voltage.
This video shows the journey of Andrew, who has Cerebral Palsy and the preparations his Mum takes before a flight.