General information about battery related terms can be useful to understand battery technology easily.

**Anode:** The electrode in an electrochemical/galvanic cell that experiences oxidation, or gives up electrons. (+)

**Ampere:** The Standard International base unit of current intensity. 1 Ampere flows through one Ohm of resistance, when a potential of one volt is applied. I=E/R.

**Ampere-Hour:** The quantity of electricity that passes through a circuit in one hour, when the rate of flow is one ampere. Expressed as Ah or Mah

**Battery Capacity:** The total number of Ampere-hours that can be derived from a fully loaded battery, under a specified set of conditions. The current supplying capability of a battery in ampere-hours.

**Cathode**: The electrode in an electrochemical/galvanic cell, at which a reduction reaction occurs, or the electrode that receives electrons from an external circuit. In other words, a terminal or electrode through which electrons enter a direct current load. (-)

**Energy**: The capacity for doing work. Common forms of energy include electric energy, chemical energy,

**Energy Density:** The ratio of the energy available from a battery, to its cell mass. Expressed in Joules per gram.

**Ion:** A particle that carries a positive or negative charge.

**Load**: A term used to indicate the current drain on a battery when power is delivered to external devices or circuit elements.

**Nominal Voltage:** The characteristic operating voltage or rated voltage of a battery.

**Ohm:** The basic unit of resistance, reactance, or impedance.

**Parallel:** A term used to describe the inter-connection of cell or batteries in which all like terminals are connected together.

**Potential:** The electrical pressure causes charge carriers to move through a substance or circuit.

**Volt**: The basic unit expressing a difference of potential.

**Voltage:** Electromotive force or difference of potential. E=IR, where I is current and R is resistance.

**Working Voltage:** The typical range of voltages of a battery during discharge

https://depts.washington.edu/matseed/batteries/MSE/definitions.html