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plete path. An open circuit has a broken path.
Cycle
One discharge of a battery plus one recharge.
Depth of Discharge (DOD)
The percentage of capacity actually removed from a
battery compared to the total rated capacity.
Electrolyte
In a deep cycle battery, it is a dilute solution of sulfuric acid and water.
Hydrometer
A tool used to measure the specific gravity of the electrolyte solution.
Equalization
An overcharge performed on flooded lead-acid batteries after they
have been fully charged. This maintenance step helps eliminate stratification and
sulfation.
Ohm
A unit of measurement for electrical resistance within a circuit.
Open Circuit Voltage
The voltage of a battery when there is no load attached(not
receiving or delivering energy).This measurement is best taken when the battery
has been at rest for at least 6 hours.
Power Inverter
An electronic device that converts direct current (DC) power from
a battery into standard alternating current (AC) house power.
Primary Battery
An energy storage device that can deliver energy but cannot be
recharged (i.e., disposable flashlight battery)
Secondary Battery
An energy storage device than can deliver energy and can be
recharged (i.e., automotive or deep cycle battery)
Separator
A divider made of porous material that is placed between the positive
and negative plates in a battery cell and allows current to flow through it, while
preventing direct contact between the plates which would cause a short circuit.
Specific Gravity (S.G.)
A measurement of the strength of battery electrolyte by
comparing its density to that of pure water.
Stratification
A condition where the concentration of acid is greater at the bottom
of the battery that at the top.
Sulfation
The formation of lead sulfate on the positive and negative electrodes.
Volt (V)
A unit of measurement for electrical potential within a circuit.
Watt (W)
A unit of measurement for electrical power.
Watt Hour (Wh)
A unit of measurement for electrical power for a certain period of
time.
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