Advantages of 12V Ignition System over 6V Battery Ignition

battery cells voltage comparison in ignition system

🔗Coil ignition system construction and essential components
🔗Difference between battery ignition system and magneto ignition system

12V battery ignition versus 6V battery ignition

Until the 1950s the motor vehicle used 6V ignition system since it requires only three cell (of 2V) battery to create 6 Volts system. They are lighter than the 12V battery of same watt-hour capacity. As compression ratio and engine speed increased, the voltage requires to satisfactory ignition of the engine is also increased.

The advantages of 12V ignition system over a 6V ignite is listed below

  • The number of accessories can be connected to battery since it giving adequate power supply.
  • Improve the starting of engine since twice power is available for ignition during staring.
  • Considerably higher voltage is obtained.
  • For transmitting same power without excessive voltage drop, the thickness of wire required in 6V system is theoretically two times thicker than the wire used for 12V system.


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