Plugs straight into the mains and comes with adaptors for continental Europe, UK, Australia and USA, so that the battery can always be fully charged before your journey. This accessory is compatible with the TomTom ONE, v3 and v4, (Europe and Republic of Ireland and Europe), TomTom ONE XL, v1 and v2, (Europe and Republic of Ireland and Europe), TomTom GO X20 and X30 series.