Can I use my Philips Avent Premium Breast Pump cordless?

1. Switch off the device
2. Insert the adapter into the wall socket and insert the small plug at the other end into the motor unit
3. The battery is charging when the battery lights light up one by one and go out all together (below picture displays the running lights).
4. When battery is fully charged, remove the adapter from the wall socket and pull the small plug out of the motor unit

 Note:  one battery light is equal to one expression session of 20 min (Double Electric) or 30 min (Single Electric).