SMARTPASS 120T, 40-329 |


Smartpass 120T is a 24V multifunctional power management solution and split charging system for dual battery systems with starter battery and service battery. Smartpass 120T distributes, controls, and maximizes the available energy from your alternator to service battery and electrical consumers.

Part no. 40-329


24V | Onboard power management for 24V service battery systems

Smartpass 120T is to be used in applications where the alternator gives is able to deliver the desired charging voltage and the service battery has many parallel consumers with average load greater than 10A. The battery guard function in Smartpass 120T will turn off equipment connected to consumer output when service battery voltage is too low, this protects the service battery from deep discharge and will increase lifetime of battery. To maximize the split charging process Smartpass will supply power to the connected consumers directly from alternator when motor is running. Smartpass 120T ensures a safe operation by safety features as Battery temperature protection, Dynamic overcurrent protection and Over temperature protection.


  • Smart power management and split charging the service battery from alternator will give you the maximum power out from your battery system.
  • Battery isolator that eliminates the need of diodes and VSR relays. D250T separates the starter battery from the service battery when the engine is not running.
  • Can continuously distribute up to 120 A from the alternator to service battery and electrical consumers.
  • Battery guard protects the service battery from deep discharge and will increase the lifetime of battery.
  • Smart alternator compatible
  • Totally silent operation due to a cooling system without fans or other moving parts.
  • Smartpass can handle temporary inputs and outputs of up to 350 A, for safety the device have a dynamic over current protection.
  • Safety features: Sensor for monitoring the service battery temperature, Dynamic over current protection and Overtemperature protection.
  • Durable design that is splash and dust proof (IP65).
  • 2-year warranty.
  • SUITABLE FOR: Heavy Vehicles, Boats, Recreational vehicles, Busses, Transport trucks and all other vehicles with a 24V dual battery system.

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