An AGM semi-traction battery is a specific type of battery used in applications where a long-lasting power source is needed, such as maritime applications, recreational vehicles, campers, caravans, and solar energy systems. Here is some information about AGM semi-traction batteries:

AGM stands for Absorbed Glass Mat, which refers to the construction of the battery. In an AGM battery, the lead plates are impregnated in fiberglass mats that are saturated with electrolyte. This electrolyte is “absorbed” into the fiberglass mats, holding it in the battery. This results in advanced technology that is leak-proof, low-maintenance, and vibration-resistant.

The term “semi traction” indicates that the battery is suitable for applications requiring regular deep discharge and recharge but does not require the same intensity as a full traction battery. Semi-traction batteries are designed to be deeply discharged and then recharged repeatedly, making them suitable for applications requiring long-term power sources.

The advantages of AGM semi-traction batteries include:

1. Deep discharge: AGM semi-traction batteries can be repeatedly deeply discharged without negatively affecting the battery's performance or lifespan. They can deliver a significant portion of their capacity before needing to be recharged.

2. Low maintenance: AGM semi-traction batteries have a closed construction, which makes them leak-proof and requires little maintenance. They do not need to be refilled with water and require no special ventilation.

3. Vibration resistance: The AGM construction with fiberglass mats makes the battery resistant to vibrations, making it suitable for use in vehicles and maritime applications where vibrations may occur.

4. Fast charging capacity: AGM semi-traction batteries generally have good charging efficiency and can be charged quickly, reducing downtime for vehicles or equipment.

When choosing an AGM semi-traction battery, it is important to consider specifications such as capacity, voltage, and dimensions to ensure the battery is suitable for the intended application. It is also advisable to consult the battery’s manual for specific recommendations regarding use and charging procedures.