- 4 batteries (all of the same voltage and capacity)
- 8 battery connector wires
- A voltmeter
Step 2: Connect the batteries in series.
1. Connect the positive terminal of battery 1 to the negative terminal of battery 2.
2. Connect the positive terminal of battery 2 to the negative terminal of battery 3.
3. Connect the positive terminal of battery 3 to the negative terminal of battery 4.
4. Leave the positive terminal of battery 1 and the negative terminal of battery 4 unconnected.
5. Connect battery connector wires between the unconnected terminals. Connect the positive terminal of battery 1 to the positive terminal of your circuit, and the negative terminal of battery 4 to the negative terminal of your circuit.
Step 3: Verify the connections.
- Use your voltmeter to measure the voltage across the entire series of batteries. It should be equal to the sum of the voltages of the individual batteries.
Step 4: Secure the connections.
- Once you have verified that the connections are correct, use electrical tape or heat-shrink tubing to secure them. This will help to prevent the connections from coming loose and shorting out the batteries.
Important Safety Notes:
- Be careful not to short-circuit the batteries. This can cause the batteries to overheat and explode.
- Make sure that the batteries are all of the same voltage and capacity. If the batteries are not matched, it can damage the batteries and cause them to fail prematurely.
- Always wear eye protection when working with batteries.
