Parallel vs. Series Connection Calculator

Calculate and compare parallel and series connections for batteries and solar panels. Understand how different wiring configurations affect voltage, current, and power.

Select the type of device to connect
Enter the nominal voltage of one device
Enter the rated current of one device
Enter the number of devices to connect
Select the connection configuration

Connection Comparison

Connection Type Voltage Current Power Applications
Series Adds Same Adds High voltage systems
Parallel Same Adds Adds High current systems
Series-Parallel Adds Adds Multiplies Balanced systems

Series Connection Characteristics

  • Voltages add together
  • Current remains the same
  • Total power increases
  • Higher system voltage
  • Good for high voltage applications
  • Requires matched devices
  • One failure affects all devices

Parallel Connection Characteristics

  • Voltage remains the same
  • Currents add together
  • Total power increases
  • Higher system current
  • Good for high current applications
  • More fault tolerant
  • Requires matched voltages

Safety Considerations

  • Use appropriate wire sizes
  • Include proper fusing
  • Consider temperature effects
  • Monitor individual devices
  • Use proper connectors
  • Follow manufacturer guidelines
  • Regular maintenance required