An air conditioning system having: a controller; an energy storage device including a battery pack, wherein the energy storage device is operable to power the air conditioning system; and an AC power bus for connection the air conditioning system to an AC power grid to selectively charge the…

A power tool battery charger for determining time information for use in controlling charging of a power tool battery pack may include a battery pack interface, a controller and a memory. The battery pack interface is configured to receive a power tool battery pack and provide charging current to…

An apparatus is disclosed for adaptive multi-mode charging. In an example aspect, the apparatus includes at least one charger having a first node and a second node. The at least one charger is configured to accept an input voltage at the first node. The at least one charger is also configured to…

A wireless charger for a mobile device includes a coil arranged adjacent to a charging surface. A power conversion module is configured to selectively supply power from a power source to the coil to wirelessly charge the mobile device. A temperature sensor is configured to sense a temperature at…

A battery pack (10) includes: a connecting portion (14A, 14B, 16A, 16B) connected to a battery charger; a battery (20) chargeable by the battery charger (40) connected to the connecting portion (14A, 14B, 16A, 16B); an environment temperature detecting element (32) detecting an environment…