This Maymom accessory set includes a 9V battery holder and a 9V auto charger specifically designed for the Medela Pump In Style breast pump. The AC/DC adapter has an output voltage of 9V, ensuring reliable and efficient power for your pump. The brand, Maymom, is known for their high-quality breast pump accessories and this set is no exception.

The set is perfect for on-the-go pumping, as it allows you to power your breast pump with either a battery or a car charger. The Maymom 9V battery holder ensures that you always have a backup power source, while the auto charger lets you conveniently charge your breast pump while driving. This accessory set is a must-have for any busy mom who needs a reliable and portable breast pump solution.