To connect two 12-volt batteries to produce about 24 volts, how should they be connected?

To connect two 12-volt batteries to produce about 24 volts, how should they be connected?

• A. In parallel
• B. In series
• C. By using a transformer
• D. By using a regulator

Answer: (B)

To get about 24 volts from two 12-volt batteries, connect them in series by linking the positive terminal of one to the negative terminal of the other. The remaining free terminals become the 24-volt output and the return. In a series arrangement, the voltages add up (12 + 12 ≈ 24 V) while the current rating stays the same as a single battery. Connecting in parallel would keep the voltage at about 12 volts but increase available current, which isn’t what you want for a higher voltage. A transformer only works with alternating current and isn’t used to raise DC voltage from batteries without first converting to AC. A regulator adjusts voltage but doesn’t create a higher voltage from two DC sources. Remember that battery voltage varies with state of charge, so two 12-volt batteries in series will give roughly 24 volts when charged, but slightly less when discharged. Ensure correct polarity and safety to avoid short circuits.

To get about 24 volts from two 12-volt batteries, connect them in series by linking the positive terminal of one to the negative terminal of the other. The remaining free terminals become the 24-volt output and the return. In a series arrangement, the voltages add up (12 + 12 ≈ 24 V) while the current rating stays the same as a single battery.

Connecting in parallel would keep the voltage at about 12 volts but increase available current, which isn’t what you want for a higher voltage. A transformer only works with alternating current and isn’t used to raise DC voltage from batteries without first converting to AC. A regulator adjusts voltage but doesn’t create a higher voltage from two DC sources.

Remember that battery voltage varies with state of charge, so two 12-volt batteries in series will give roughly 24 volts when charged, but slightly less when discharged. Ensure correct polarity and safety to avoid short circuits.