How do I charge the Dyson SV12 for the first time?

It is important to fully charge your new machine before using it for the first time, and after every clean. This is because the battery and monitoring system's algorithm 'learns' over time, and fully charging your machine helps it to more accurately calculate and display remaining run time. Connect to the charger either directly or in the dock — the blue LEDs on either side of the battery will flash during charging, and both LEDs will light for 5 seconds when fully charged. (Page 6)