Battery Flashcards
(35 cards)
What do batteries do?
Batteries store chemical energy and convert it into electrical energy to power devices.
How do a batteries work?
A battery converts chemical energy into electrical energy via electrochemical reactions between its electrodes and electrolyte.
What are the common types of batteries?
Alkaline, lithium-ion, nickel-cadmium (NiCd), and nickel-metal hydride (NiMH).
What are the typical voltage ranges for AA batteries?
Typically 1.5V for alkaline and 1.2V for NiMH rechargeable batteries.
How do you use batteries in a circuit?
Connect the positive terminal to the positive side of the circuit and the negative terminal to the negative side.
What can go wrong with batteries in a circuit?
They can leak, corrode, or overheat, potentially causing damage or unsafe conditions.
What is the difference between primary and secondary batteries?
Primary batteries are single-use (non-rechargeable), while secondary batteries are rechargeable.
How can battery life be extended?
Avoid overcharging, use the battery within its temperature range, and store it properly when not in use.
What safety precautions should be taken with batteries?
Avoid short-circuiting, puncturing, or exposing them to extreme temperatures.
What are primary batteries?
Non-rechargeable batteries designed for single-use.
What are secondary batteries?
Rechargeable batteries designed for multiple uses.
What is battery capacity and how is it measured?
The amount of charge a battery can store, measured in milliampere-hours (mAh).
What are common types of batteries?
Alkaline, lithium-ion, nickel-cadmium (NiCd), nickel-metal hydride (NiMH).
What is the voltage of a standard AA alkaline battery?
1.5V.
What is the voltage of a standard AA NiMH rechargeable battery?
1.2V.
How should batteries be stored?
In a cool, dry place and away from direct sunlight or extreme temperatures.
What is a battery’s self-discharge rate?
The rate at which a battery loses charge when not in use.
How can you extend battery life?
Avoid overcharging, store properly, and use within recommended temperature ranges.
What is battery impedance?
The resistance a battery offers to the flow of current.
How do you determine if a battery is dead?
Measure its voltage with a multimeter or check if it fails to power a device.
What are the effects of overcharging a battery?
Can lead to overheating, leakage, or even explosion.
What is a battery’s nominal voltage?
The standard voltage of a fully charged battery.
How do you safely dispose of batteries?
Follow local regulations for recycling or disposal, especially for rechargeable and lithium batteries.
What is the difference between cylindrical and prismatic batteries?
Cylindrical batteries have a round shape, while prismatic batteries are rectangular.
