Battery Wiring Instructions

Battery Wiring Instructions

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Batteries supply electricity without the need to plug into a receptacle. Batteries with of different voltages employ multiple batteries connected together. A 12-volt car battery for instance is actually six batteries or cells connected together in series. By wiring batteries together you can supply higher voltages or higher currents than a single…24-

Volt Series Wiring

1
Screw the connector on a battery cable into the positive terminal of the first battery. Tighten the connector with the battery terminal wrench. The positive terminal is labeled with a plus symbol.

2
Screw the connector on the same battery cable into the negative terminal on a second battery and tighten the connector with the battery terminal wrench. The negative terminal is labeled with a minus symbol.

3
Set the multimeter selector switch to read DC volts. Touch the red lead to the positive terminal of the second battery and the black lead to the negative terminal of the first battery. The multimeter will read 24 to 28 volts DC depending on the level of charge in the batteries. The voltage is effectively doubled but the available current remains the same. Two 12-volt, 750 amp batteries become a single 24-volt, 750 amp battery.

12-Volt Parallel Wiring

4
Connect the negative terminal of the first battery to the negative terminal of the second battery with a battery cable. Tighten the connectors on the cables with a battery terminal wrench.

5
Connect the positive terminal of the first battery to the positive terminal of the second battery with a battery cable. Tighten the connectors on the cables with a battery terminal wrench.

6
Set the multimeter to read DC volts. Touch the red multimeter lead to the positive terminal of either battery. Touch the black multimeter lead to the negative terminal of either battery. The display will read 12 to 14 volts depending on the charge levels of the batteries. The voltage remains the same but the available current is added together. Two 750 amp, 12-volt batteries make one 12-volt, 1500-amp battery.

24-Volt Battery Bank
7
Connect the positive terminal of battery one to the negative terminal of battery two with a battery cable. Repeat this for batteries three and four. This makes two 24-volt batteries.


8
Test the voltage of both pairs of batteries. Each should read 24 volts.

9
Connect the negative terminal of battery one to the negative terminal of battery three with a battery cable. Connect the positive terminal of battery two to the positive terminal of battery four with a battery cable. This connects the two 24 volt batteries in parallel.
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10
Set the multimeter to read DC volts. Touch the red lead to the positive terminal of battery one and the black lead to the negative terminal of battery four. The multimeter display should read 24 volts. The voltage available has been raised to 24 volts and the current available is effectively doubled. Using 750 amp-hour batteries, the output available is 24 volts at 1500 amps.