Https://www.imore.com/sites/imore.com/files/styles/larger/public/field/image/2016/04/amber-alert-notification-settings-screens.jpeg?itok=rLaycAMr
<span>The output voltage of a typical size "D" NiCad cell would be 1.2 volts.</span>
A cisco develops, manufactures and sells networking hardware, software, telecommunications equipment and other high-technology services and products. ... They pioneered the concept of a local area network (LAN) being used to connect geographically disparate computers over a multiprotocol router system.
Hope that helps.