CTEK Smartpass 120S Power Management System

12V versatile and fully automatic power management system for dual battery systems. The Smartpass 120S is a 120 amp power management system that distributes, regulates and maximizes the amount of energy available from the alternator to the service battery and loads. The SMARTPASS 120S handles all 12V batteries with capacities from 28 to 800 Ah. The Smartpass 120S charger’s battery guard ensures that critical equipment such as radio, emergency lights and navigation systems always receive power and take priority when the service battery voltage drops, resulting in less critical loads being disconnected. The device’s battery guard protects the service battery from being completely discharged and the built-in temperature protection function reduces the charging current before the battery temperature gets too high. The SMARTPASS 120S is compatible with the 20A D250SA and D250SE chargers.

Features

• Automatic battery isolator replaces separate diodes and VSR relays
• Fully automatic
• Maximize battery life
• Battery guard protects the operating battery from deep discharge
• Dynamic overcurrent protection that can handle up to 350 amps for short periods of time, for example for winch operation.
  
• Safety-enhancing temperature sensor that protects the battery from overheating.
• Splash and dust protected (IP65).
• Two-year warranty.