Question

Which of the following statements is/are generally true regarding the charging of several aircraft batteries together?

1. Batteries of different voltages (but similar capacities) can be connected in series with each other across the charger, and charged using the constant current method.
2. Batteries of different ampere-hour capacity and same voltage can be connected in parallel with each other across the charger, and charged using the constant current method.
3. Batteries of the same voltage and same ampere-hour capacity must be connected in series with each other across the charger, and charged using the constant current method.

A: 3

B: 2 and 3

C: 1 and 2

Answer 1

Batteries of different ampere-hour capacity and same voltage can be connected in parallel with each other across the charger, and charged using the constant current method. Batteries of the same voltage and same ampere-hour capacity must be connected in series with each other across the charger, and charged using the constant current method.

Step-by-step explanation:

The correct statement is option B: 2 and 3.

1. Batteries of different ampere-hour capacity and same voltage can be connected in parallel with each other across the charger, and charged using the constant current method.
2. Batteries of the same voltage and same ampere-hour capacity must be connected in series with each other across the charger, and charged using the constant current method.

Connecting batteries in series adds their voltages and is used to increase the total voltage, while connecting batteries in parallel keeps their voltage the same and is used to increase the total ampere-hour capacity.