iPads contain internal battery that is rechargeable. It can be charged using a power adaptor or use of USB cable connected to a computer or devices with USB port. If one has a computer capable of delivering high power through the USB it should be able to charge the iPad. Knowing how to charge the iPad battery is important to enable one continue using the device. One should make sure the device they intend to charge the iPad with support high power connection before connecting it. Most of the desktops and laptops have the provision and make sure they are open and on. The old generation computers do not support high power USB connections of devices hence not ideal for charging.
The flat end of the USB cable is connected to the iPad and the corresponding end of the same connected to the available USB port of the charging device. When power is put on and a white icon shows under the battery charge indicator, the iPad is charging. If nothing shows or a message indicating that charging is not supported by the accessories it shows that the iPod is not charging and the device does not have a high-powered USB port. Once a person learns how to charge the iPod with USB cable, they can enjoy the services of iPod without having a wall socket.