Battery terms and definitions

Battery terms

AC

Alternating current is the condition under which the motion of charge in a conductor varies cyclically.

Acid

Accumulator

Active Material

AGM (Absorbent Glass Mat)

Amp (Amp, A)

AmpereHour (Amp-hrs, Ah)

Anode

Battery

BMS

Boost Charge

BCI Group

Capacity

Cathode

Cell

Charge Acceptance

Cold Cranking Amps (CCA)

Charger

Conductivity

Container

Corrosion

Current

Cycle

Cycle Life

Deep discharge

Deep-Cycle Battery

Discharging

Electrolyte

Electronic tester

Element

Equalization Charge

Formation

GEL

Grid

Ground

Group

Group size

Hydrometer

Impedance (Z)

Internal resistance (IR)

lead-acid battery

Load Tester

Low maintenance battery

MCA (Marine Clamp Ampere)

Maintenance-Free

Negative

Ohm (Ω)

Ohm's Law

Open voltage circuit

Plates

Positive

Primary battery

Reserve capacity rating

Resistance (Ω)

Sealed batteries

Secondary battery

Separator

Short circuit

Specific gravity (Sp. Gr. Or SG)

Starter, Lighting and Ignition (SLI) battery

State of Charge (or the State of Health)

Stratification

Sulfation

Terminals

Vent

Volt (V)

Voltage drop

Voltmeter

VRLA

Watt (W)

Watt

Watt-hour (Wh)