RELIABILITY: Features a non-isolated design with passive natural cooling for silent, fan-free operation and long-term durability in rugged RV and marine environments.

Key Features

• ✔ Euro 6 Compatible: Works with smart alternators
• ✔ TBB Premium II: Advanced 5-stage charging
• ✔ Multi-Chemistry: AGM, Gel, WET, and LiFePO4
• ✔ Back-Charging: 0-3A trickle charge for starter battery
• ✔ Fanless Design: 100% silent passive cooling

Technical Specs

Output Current:	45A
System Voltage:	12V DC
Alternator Input:	13.2V - 16.0V
Max Efficiency:	96%
Dimensions:	181 x 148 x 52 mm
Weight:	1.0 kg

Application	Vehicle Types	Notes
Leisure/Auxiliary	Campervans, Motorhomes, Caravans	Ideal for Lithium upgrades
Marine	Boats, Yachts, Narrowboats	Compact and fanless
Commercial	Utility Trucks, Vans, Fleet Vehicles	Euro 6/Smart Alt compatible

This unit uses a non-isolated common ground design. It features automatic alternator detection via the D+ signal or voltage sensing. We recommend using 10mm² to 16mm² cabling (depending on length) to minimize voltage drop. A Battery Temperature Sensor (BTS) is included to optimize charging based on real-time conditions.

Is this a genuine original part?

This is a premium quality TBB Power part, supplied by Solarika, manufactured to meet or exceed original equipment (OE) standards for vehicle battery management.

How do I know if it is compatible?

If you have a 12V vehicle system (Euro 5, Euro 6, or older) and need to charge a leisure battery bank at up to 45A, the DM1245 is an ideal fit. Check your required charge current against your battery manufacturer's recommendations.

Does this unit include a solar MPPT input?

No, the TBB-DM1245 is a dedicated DC-to-DC (alternator-to-battery) charger. For dual solar and alternator charging, please look for the TBB Nemo or DMT series units.