Ampere
(A) |
|
A unit of measurement
for electron flow or current through an electrical circuit.
(Amp = Volt / Ohm)
|
|
Ampere-Hour
(AH) |
|
A unit of measurement
for electron flow or current through an electrical circuit for
a certain period of time. (Ampere X Hour = Ampere-Hour).
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Electrolyte |
|
In a lead acid battery,
it is a dilute solution of sulfuric acid (H2SO4)
and water.
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Hydrometer |
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A tool used to measure
the specific gravity of the electrolyte solution.
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Ohm
( 
) |
|
A unit of measurement
for electrical resistance within an electrical circuit. (
Ohm = Volt / Ampere )
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Ohm's
Law |
|
Expresses the
relationship between voltage ( volts ), current ( amperes ), and
resistance ( ohms ).
(Ohms = Volts / Amperes).
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Open
Circuit Voltage |
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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.
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Parallel
Connection |
|
A method of
wiring batteries together by connecting the positive terminal
of the first battery to the positive terminal of the second and
the negative terminal of the first to the negative of the
second. The capacity for batteries connected in parallel becomes
additive, while the voltage remains the same as the individual
battery.
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Primary
Battery |
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An energy
storage device that can deliver energy but cannot be recharged.
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Secondary
Battery |
|
An energy
storage device that can deliver energy and can be recharged.
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Separator |
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A divider made
of porous material that is placed in between the positive and
negative plates in a battery cell and allows current flow through
it while preventing direct contact between the plates which would
cause a short circuit.
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Series
Connection |
|
A method of
wiring like batteries together by connecting the positive terminal
of one battery to the negative terminal of an other.
The voltage for batteries connected in series is additive,
while the capacity remains the same as the individual battery.
|
Series-Parallel
Connection |
|
A method of
wiring batteries together in a combination of series and parallel
connections.
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Specific
Gravity |
|
The density
of a solution relative to the density of water.
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Stratification |
|
A condition
where the concentration of acid is greater at the bottom of the
battery than at the top. This condition is caused by undercharging,
and if not corrected can cause premature failure of the battery.
This condition can be prevented by periodic equalization.
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Sulfating |
|
The lead
sulfate on both the positive and negative electrodes in a lead
acid battery results during the discharge portion of the charge
/ discharge cycle and is a normal part of the battery process.
If the battery is allowed to remain in a discharged state
for a prolonged period of time, these sulfate crystals continue
to grow. These larger crystals reduce the effective plate area
ands are difficult to dissolve back into solution with normal
charging. Thus, they reduce the overall capacity of the
battery. This condition can be prevented effectively recharging
the battery immediately following a discharge. This condition
can also be prevented by periodically equalizing the battery.
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Volt
( V ) |
|
A unit of measurement
for electrical potential within an electrical circuit. (
Volt = Ampere X Ohm )
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Watt
( W ) |
|
A unit of measurement
for electrical power. ( Watts = Amperes X Volts
)
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Watt-Hour
( WH ) |
|
A unit of measurement
for electrical power for a certain period of time. (
Watts X Hours = Watt-Hour )
|