An apparatus comprising: control circuitry configured to switch the apparatus between a charging state in which energy transfer from the apparatus to a rechargeable apparatus is enabled and a non-charging state in which energy transfer from the apparatus to the rechargeable apparatus is not enabled; charging circuitry configured to transfer energy, when the apparatus is in the charging state, to the rechargeable apparatus for storage at the rechargeable apparatus; and indication circuitry configured to enable an indication, when the apparatus is in the non-charging state, to prompt user action to bring the rechargeable apparatus towards the apparatus for charging.