Question

what is the function of the voltage button on the jump pack?
gives a percentage of life left on the unit
gives the percentage possibility of a successful jump start
shows the charge on the internal battery
shows the percentage of charge on the vehicle battery

Explanation:

The voltage button on a Jump Pack is typically used to indicate the charge level of its internal battery. This helps the user know how much power is available in the Jump Pack itself for performing jump - starts.

• Option 1: Giving a percentage of life left on the unit is not the function of the voltage button. The voltage button is more about the internal battery's charge rather than an abstract 'life' percentage.
• Option 2: The voltage button does not give the percentage possibility of a successful jump start. That is not its intended function.
• Option 3: This is correct as the voltage button shows the charge on the internal battery.
• Option 4: It shows the charge on the Jump Pack's internal battery, not the vehicle battery.

Answer:

Shows the charge on the internal battery