Introduction The next generation of CARTEK Battery Isolator is now available. The CARTEK Battery Isolator X-PRO is designed for all race and rally car applications. This Battery Isolator can handle high cranking current and so is suitable for large capacity and highly tuned race engines including V8s. It also features adjustable current limit for the Engine Stop Output signal and a 4 pin sealed DT connector for easy installation. Key Features Can handle 650 Amps cranking (2000A Surge) Small + lightweight design (110g/0.24lbs) Configurable Engine Stop Output (5A/10A/15A/20A) Overcurrent + Overtemperature protection built in Integrated RGB status LED for diagnostic purposes Totally sealed against water and dirt Completely resistant to shock and vibration Note: Price has increased 10% in Oct 2025 due to current tariffs. Description All CARTEK Battery Isolators are designed to perform two functions in accordance with FiA motorsport safety regulations. These are:1) Stop the Engine from running, 'Kill'.2) Disconnect the Battery from ALL electrical systems, 'Isolate'. The 'Engine Stop' function is implemented by disconnecting power to the ECU or Ignition circuit - forcing the engine to stop and electrical power generation by the alternator/generator to cease. The 'Battery Isolation' function is implemented by disconnecting the negative side of the vehicle’s battery from chassis/ground, thereby disconnecting the battery from ALL of the car's electrical systems. When activated, the Engine Stop function occurs a very short period of time before Battery Isolation. Alternator load dump protection is also built in so no additional components are needed. User operation All CARTEK Battery Isolators are operated using two switches: A dashboard mounted 'Internal Switch' allows the driver to turn the Battery Isolator ON and OFF. An 'External Switch' is for operation by safety personnel in an emergency situation. The Internal Switch can be used to turn the Battery Isolator ON and OFF, however the External Switch can only turn the Battery Isolator OFF. This is in accordance with Motorsport UK safety regulations. All CARTEK Battery Isolators also shut down automatically if a fault is detected such as short-circuit, over-current, over-temperature or broken cable connections. If this happens then the LED on the Battery Isolator unit, and the CARTEK Internal Switch, will display a flash pattern to indicate the cause of the fault. The user manual can be found here, CARTEK X-Pro User Manual Kit Contents BATTERY ISOLATOR X-PRO 1 x CONNECTOR + CRIMPS 1 x INTERNAL BUTTON 1 x EXTERNAL BUTTON 1 x SAFETY STICKERS PACK Pro Tip After many installs of the Cartek GT and XR units, which are removing the ground for the car's battery, we have seen that "weird things" can happen if you do not have a GOOD GROUND to the metal mounting tabs of the Cartek units. Any high amperage circuit (starter, EPAS, etc.) can suffer if the ground for the entire car is just through the metal tab on the mounting base of the Cartek. Copy what we have done above - add a dedicated ground cable from the mounting flange of the Cartek to a good grounding lug on the chassis - and you will not suffer from any electrical gremlins. #TheMoreYouKnow
