TBCM-40 TRAILER BATTERY CHARGING MODULE

TBCM-40 TRAILER BATTERY CHARGING MODULE

The TBCM-40 Trailer Battery Charging Module senses the alternator charge voltage of the towing vehicle and sends charge current to the trailer battery. When the vehicle is not running, the TBCM-40 disconnects the trailer battery from the vehicle’s charge wire to prevent having two dead batteries. The TBCM-40 works with existing 12 volt trailer wiring, including on-board 110 volts AC chargers, and handles most towing vehicle alternators.

The TBCM-40 is mounted in the trailer battery box or engine compartment and only requires three wires for connection. The TBCM-40 does not have a .6 volt drop to sulfate your battery like RV type isolators.


Dimensions: 1.20”W x 3.20”L x 1.2”H         

Purchase Online: TBCM-40A Trailer Battery Charging Module

Product Datasheet
Features and Applications:
   •  Senses the alternator charge voltage, sending charge current to the trailer battery
   •  Disconnects the trailer battery from the vehicle’s charge wire when not charging (when engine is not running), preventing two dead batteries
   •  Works with existing 12V trailer wiring, including on-board 110 volts AC chargers
   •  Handles most towing vehicle alternators
   •  Easily mounted in the trailer battery box or engine compartment, connecting only three wires
   •  Unlike RV type isolators, the TBCM-40 does not have a .75V drop to sulfate your battery

Wiring Diagram:
TBCM-40 TRAILER BATTERY CHARGING MODULE WIRING

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