Test 6 Flashcards
Electrolyte is the conducting medium that allows the transfer of ions between battery cell plates.
True
Charging is the process of a cell or battery converting chemical energy to electrical energy and delivering current.
False
The voltage between battery terminals is highest at the beginning of a discharge cycle and gradually falls.
True
Self-discharge is the gradual reduction in the state of charge of a battery while at steady-state condition.
True
Only flooded open-vent batteries need equalization
True
Sulfation increases the electrolyte concentration and the available active material, and therefore the capacity of the cell.
False
A secondary battery is a battery that can store and deliver electrical energy but cannot be recharged
False
Lead-acid batteries are the most common type of batteries used in PV systems
True
Lead-calcium batteries experience less gassing and lower self-discharge rates than lead-antimony batteries.
True
Batteries are connected in series by connecting all of the positive terminals together and all of the negative terminals together.
False
A(n) ____ is a collective of cells that are contained in the same case and connected together electrically to produce a desired voltage.
battery
____ is the condition where essentially no electrical or chemical changes are occuring.
Steady-state
The ____ is the percentage of energy remaining in a battery compared to the fully charged capacity.
state of charge
____ is the amount of time a fully charged battery system can supply power to system loads without further charging.
Autonomy
____ charging is battery charging at a low charge rate that maintains full battery charge by counteracting self-discharge.
Float
____ is the ratio of applied charge to the resulting increase in battery charge.
Overcharge
____ is a condition of flooded lead-acid cells in which the specific gravity of the electrolyte is greater at the bottom than the top.
Stratification
____ batteries are a class of batteries designed for repeated deep-discharge cycle service.
Traction
____ electrolyte is electrolyte that is immobilized.
Captive
A ____ battery is a battery that uses a combination of plate designs to maximize the desirable characteristics.
hybrid
A(n) ____ is an electrode consisting of active material supported by a grid framework.
plate
____ is the measure of the electrical storage potential of a battery or cell.
Capacity
____ is the process of a cell or battery receiving current and converting the electrical energy into chemical energy.
Charging
____ charging is a stage of battery charging following bulk charging that reduces the charge current to maintain the battery voltage at a regulation voltage for a certain period.
Absorption
____ is the decomposition of water into hydrogen and oxygen gases as a battery charges.
Gassing
____ is the ratio of the density of a substance to the density of water.
Specific gravity
Starting, lighting, and ignition (SLI) batteries are a class of batteries designed primarily for ____-discharge cycle service.
shallow
A(n) ____ is a substance that causes other substances to chemically react but does not participate in the reaction.
catalyst
A(n) ____ is a group of batteries connected together with series and parallel connection to provide a specific voltage, current, and capacity.
battery bank
Connecting batteries in series increases system ____.
voltage