Battery Current Sensors

The New Necessity of Battery Maintenance

As the electrical systems on newer vehicles continue to advance, battery maintenance has become an essential component to keeping vehicles on the road. Battery Current Sensor (BCS) components, which measure the charge and discharge current flowing through the battery, are critical for maintaining a healthy battery.


Our Expanding Line of Battery Current Sensors

In order to supply professional technicians with quality replacements for this growing category, we are committed to expanding our line of Battery Current Sensors. With over 90 SKUs and counting, we provide coverage for all major makes, including Acura, Honda, BMW, Chrysler, Ford, GM, Honda, Hyundai, Land Rover, Lexus, Mercedes Benz, Nissan, Infiniti, and Toyota.

  • Direct-fit OE replacement ensures proper fit, form, and function for ease of installation
  • Undergoes 100% testing to ensure performance and reliability

  • High-quality components accurately measure the battery's charge and discharge


  • Adjusts alternator output to improve fuel economy, increase energy system availability, and extend battery life by 10-20%

  • Identifies battery parameters such as state-of-charge, state-of-function, and state-of-health

  • Monitors the key-off current, which helps detect defective electronic components


Signs of Failure

When the battery current sensor fails, the vehicle will not charge correctly, leading to a DTC or a dead battery. Common signs of failure include:

  • Irregular charging rates

  • Low battery voltage

  • Corrosion on the battery or sensor connection

  • Broken or bare sensor cabling