If you need additional accessories, please contact our customer service. Accessories include a monitor, Bluetooth module, and NTC cable.

Product Introduction
This is an automatic 12V DC-to-DC charger that can charge the main battery via the alternator and starter battery. A DC12V-to-DC12V battery charger specifically designed for RVs, campers, boats, etc.

B2B Charging
It means charging the main battery via the alternator and starter battery. If not used in a vehicle, you can also use one battery to charge another battery.

1. When the vehicle is running, the vehicle alternator can quickly charge the main battery at full power through the charger.

2. The charger can charge the main battery according to the specified voltage and current by boosting or reducing it to ensure the main battery meets the standard. Curve charging.

Product Parameters
Main Battery "BOARDⅠ"
Rated Voltage (Lead-Acid, Gel, AGM Batteries): 12V
Rated Voltage (LiFePO4): 12.8V
Rated Voltage (Lithium-Ion, NCM): 11.1V
Recommended Capacity (Battery Size): 45–280Ah
Battery Voltage Range: 8–16V
Vehicle Starter Battery "Start II":
Rated Voltage (Vehicle Starter Battery): 12V
Recommended Capacity (Battery Size): 60Ah
B2B Charging Process
Starter Battery Voltage Range: 10.5–16V
Max. Charging Power: 390W
Max. Charging Current: 30A
Signal Voltage "D+": 8–16V
Temperature Compensation: -3 mV/℃/2V
Signal "TR": NC
Main Battery Temperature Sensor "T T": YES
Main Battery Voltage Detection "SS-, SS+": YES
Standby Current: 30±2mA
Operating Temperature: -20–50℃
Optional Accessories:
Monitor (MT-2)
Bluetooth Dongle (BT10)
Temperature Sensor (TRS)