NiCad - nickel-cadmium battery.

NiMH - nickel-metal-hydride battery.

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.

Nickel-Cadmium Battery (NiCad) - A form of rechargeable battery used in portable devices such as camcorders, cell phones, cordless phones and power tools. Compared to nickel-metal-hydride and lithium-ion batteries, it can provide a higher constant discharge rate but has a lower capacity.

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.

Nominal Voltage - The rated voltage of a battery.