When the charging voltage reaches 26.6 V, the relay opens so that the secondary (second) battery is additionally charged. This ensures that the main battery (primary battery / starting battery) is always charged. If the voltage drops below 25.6 V again, the secondary (second) battery is disconnected again.
Separates the two batteries when the engine is switched off so that they do not discharge each other.
CAN bus compatible
Weatherproof
Overvoltage protection
LED display
Ideal for cars, buses, motorhomes / caravans, boats