| Word | Description |
| Talk Time | The number of minutes that a cell phone can be used before its battery's capacity is depleted. See also Standby Time. |
| Temperature Cutoff | A device, such as a thermostat, that senses battery temperature and opens the battery circuit when the temperature reaches a certain point. |
| Terminal | A connection point on a device or component, e.g., a battery terminal. |
| Terminal Voltage | The voltage at the battery terminals |
| Trickle Charging | Charging at a very slow rate of 1-2 amps, this is typically used for smaller batteries — e.g., motorcycle, lawn and garden — or occasionally is erroneously used for keeping large automotive batteries fully charged when they are not in use. |