Answer
Feb 22, 2024 - 06:34 AM
The Smart MPPT 150/100 can handle a max of 150 volts input and a max of 100 amps output. That's what the 150/100 in the name stands for. The charge controller works in 12, 24, 36 and 48 volt systems and in each it can handle a different amount of power. You can use the formula Watts = Volts x Amps to do the calculations. In a nominal 12 volt system where the actual charge voltage is 14 volts we can put in 14 volts and 100 amps into the equation as follows: 1400 Watts = 100 Amps x 14 volts. Your total of 1600 Watts (4 x 400 Watts of panels) is too much for this MPPT to handle in a 12 volt system. You would have to split this into two separate MPPT's.
In a 24 volt system where the actual charge voltage is 28 volts you get this equation: 2800 Watts = 100 Amps x 28 volts. In this case the MPPT can handle double the power. The current stays the same when we have twice the voltage so we can handle twice the power.
In a 24 volt system where the actual charge voltage is 28 volts you get this equation: 2800 Watts = 100 Amps x 28 volts. In this case the MPPT can handle double the power. The current stays the same when we have twice the voltage so we can handle twice the power.
