If you want to monitor the battery of higher capacity, you might need a more expensive shunt capable of sustaining higher currents. The second disadvantage is that the shunt electrical characteristics limit the maximum current and power measured.
The main drawback of the shunt based battery monitors is that they require the shunt to be deployed in the solar power system, which leads to undesired rewiring of the segment of the solar power system around the battery. When deployed, you can choose the corresponding direction that suits you the most.īidirectional battery monitors measure the battery characteristics in both directions: the energy coming into the battery or discharged from it. Unidirectional ones measure battery characteristics in one direction only: either the current and power stored in the battery or ones drawn from the battery. The battery monitors using shunt could be unidirectional or bidirectional.
Depending on the detecting mechanism, battery monitors could be based on shunt or Hall Effect.
