Transcend 3 Auto Travel MiniCPAP Machine The Transcend 3 Auto is the ultimate travel companion. If you take your CPAP machine with you for work or pleasure, then the Transcend 3 Autos compact size and weight makes it easy. Plus, the optional battery packs are similarly small, meaning you no longer have to lug around a bulky, heavy battery pack. Revolutionise your travelling with a Transcend 3 Auto CPAP Machine. Plus its high build quality and specifications mean can be used as your primary machine, too. Buy any Transcend Battery at the same time as your Transcend 3 Auto and you will receive an automatic £50 discount during the checkout!