| Word | Description |
| Negative (-) | Normally refers to the negative (-) battery terminal, which is the point from which electrons flow during discharge. The negative (-) terminal cap or cable is typically black, designating negative (-). See also Ground. |
| Negative (-) Plate | The negative (-) electrodes of a battery composed of "spongy" lead on a grid. See also Active Material. |
| NiCad | nickel-cadmium battery |
| Nickel-Metal-Hydride Battery (NiMH) | A form of rechargeable battery used in portable devices such as camcorders, cell phones, cordless phones and laptops. It provides a higher capacity than a nickel-cadmium battery but is designed to perform at a lower discharge rate. |
| NiMH | nickel-metal-hydride battery |
| Nominal Voltage | The rated voltage of a battery |