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Encyclopedia of Electronic Components > Battery > Flashcards

Battery Flashcards

1
Q

What is the primary function of a battery?

A

To store and provide electrical energy through chemical reactions.

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2
Q

How does a battery work?

A

A battery converts chemical energy into electrical energy via electrochemical reactions between its electrodes and electrolyte.

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3
Q

What are the common types of batteries?

A

Alkaline, lithium-ion, nickel-cadmium (NiCd), and nickel-metal hydride (NiMH).

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4
Q

What are the typical voltage ranges for AA batteries?

A

Typically 1.5V for alkaline and 1.2V for NiMH rechargeable batteries.

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5
Q

How do you use batteries in a circuit?

A

Connect the positive terminal to the positive side of the circuit and the negative terminal to the negative side.

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6
Q

What can go wrong with batteries in a circuit?

A

They can leak, corrode, or overheat, potentially causing damage or unsafe conditions.

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7
Q

What is the difference between primary and secondary batteries?

A

Primary batteries are single-use (non-rechargeable), while secondary batteries are rechargeable.

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8
Q

How can battery life be extended?

A

Avoid overcharging, use the battery within its temperature range, and store it properly when not in use.

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9
Q

What safety precautions should be taken with batteries?

A

Avoid short-circuiting, puncturing, or exposing them to extreme temperatures.

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10
Q

What are primary batteries?

A

Non-rechargeable batteries designed for single-use.

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11
Q

What are secondary batteries?

A

Rechargeable batteries designed for multiple uses.

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12
Q

What is battery capacity and how is it measured?

A

The amount of charge a battery can store, measured in milliampere-hours (mAh).

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13
Q

What are common types of batteries?

A

Alkaline, lithium-ion, nickel-cadmium (NiCd), nickel-metal hydride (NiMH).

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14
Q

What is the voltage of a standard AA alkaline battery?

A

1.5V.

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15
Q

What is the voltage of a standard AA NiMH rechargeable battery?

A

1.2V.

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16
Q

How should batteries be stored?

A

In a cool, dry place and away from direct sunlight or extreme temperatures.

17
Q

What is a battery’s self-discharge rate?

A

The rate at which a battery loses charge when not in use.

18
Q

How can you extend battery life?

A

Avoid overcharging, store properly, and use within recommended temperature ranges.

19
Q

What is battery impedance?

A

The resistance a battery offers to the flow of current.

20
Q

How do you determine if a battery is dead?

A

Measure its voltage with a multimeter or check if it fails to power a device.

21
Q

What are the effects of overcharging a battery?

A

Can lead to overheating, leakage, or even explosion.

22
Q

What is a battery’s nominal voltage?

A

The standard voltage of a fully charged battery.

23
Q

How do you safely dispose of batteries?

A

Follow local regulations for recycling or disposal, especially for rechargeable and lithium batteries.

24
Q

What is the difference between cylindrical and prismatic batteries?

A

Cylindrical batteries have a round shape, while prismatic batteries are rectangular.

25
Q

What is the role of a battery management system (BMS)?

A

To monitor and manage the performance, safety, and longevity of a battery pack.

26
Q

What can cause a battery to fail prematurely?

A

Factors like overcharging, deep discharging, or exposure to extreme temperatures.

27
Q

How does temperature affect battery performance?

A

Extreme temperatures can reduce capacity and shorten lifespan.

28
Q

What are lithium-ion batteries known for?

A

High energy density, low self-discharge, and rechargeable capabilities.

29
Q

What is a battery’s shelf life?

A

The time a battery can be stored before it starts to lose its charge or degrade.

30
Q

What is the purpose of a battery’s positive and negative terminals?

A

To provide the connection points for electrical flow to and from the battery.

31
Q

How do you handle leaking batteries?

A

Wear gloves, avoid contact with the leaked material, and dispose of the battery properly.

32
Q

What is the typical capacity range for AA batteries?

A

Between 1000mAh and 3000mAh.

33
Q

What is a battery’s discharge rate?

A

The rate at which a battery releases its stored energy, often measured in amps.

34
Q

How does a battery’s internal resistance affect performance?

A

Higher internal resistance reduces efficiency and can lead to heat generation.

35
Q

What is a battery’s cycle life?

A

The number of charge and discharge cycles a battery can undergo before its capacity significantly degrades.

Encyclopedia of Electronic Components (7 decks)

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