ACMT Power & Battery Management 2

Question 1

Which feature in macOS allows a MacBook to intelligently manage battery charging to reduce battery aging?

Accepted Answer

Optimized Battery Charging

Answer

Low Power Mode

Answer

Battery Health Management

Answer

Power Nap

Question 2

What does Power Nap allow a MacBook to do while in sleep mode?

Accepted Answer

Periodically wake to receive emails, calendar updates, and perform Time Machine backups

Answer

Keep the display on at reduced brightness

Answer

Maintain full CPU performance for background tasks

Answer

Stream audio to AirPlay speakers

Question 3

When replacing a MacBook battery, why is it important to follow Apple's battery recalibration or verification process after installation?

Accepted Answer

To ensure the SMC correctly reads the new battery's capacity and cycle count for accurate status reporting

Answer

To activate the battery warranty through Apple's system

Answer

To format the battery's internal NAND storage

Answer

To pair the battery's Bluetooth identifier with the Mac

Question 4

A MacBook charges very slowly or not at all when connected to a USB-C charger. What is the first step a technician should take?

Accepted Answer

Test with a known-good Apple-branded USB-C power adapter and cable of the correct wattage

Answer

Immediately replace the logic board

Answer

Reset NVRAM to clear power settings

Answer

Run Apple Diagnostics to check battery health

Question 5

What wattage USB-C charger does Apple recommend for the 14-inch MacBook Pro to enable full charging performance?

Accepted Answer

96W or higher (96W USB-C or 140W MagSafe 3)

Answer

45W

Answer

30W

Answer

20W

Question 6

Which macOS feature reduces the maximum battery charge level to 80% on MacBooks used primarily on AC power to extend battery lifespan?

Accepted Answer

Battery Health Management (also called Optimized Battery Charging in some versions)

Answer

Low Power Mode

Answer

Safe Sleep

Answer

Reduce Motion

Question 7

When inspecting a Mac's power adapter, a technician notices the MagSafe connector is discolored and slightly melted. What is the safest course of action?

Accepted Answer

Immediately replace the power adapter and advise the customer not to use it; inspect the Mac's MagSafe port for damage

Answer

Clean the connector with isopropyl alcohol and continue use

Answer

File down the melted area and apply heat shrink tubing

Answer

Reset the SMC to address the charging irregularity