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Q: Is an MPPT too big?
There is a practical limit, if the solar array is too large then the power is just wasted, since the charge controller is always limiting the output. A typical recommendation is to limit the solar array to 110%-125% of the maximum controller rating.
Q: Does an MPPT make a battery overcharge?
LiTime solar charge controllers use maximum power point tracking (MPPT) technology which optimize solar production and control the battery charging voltage to prevent overcharging.
Q: What does an MPPT do when the battery is charged to full?
When the battery voltage reaches a point where the battery charger decides that the battery is full, the charger will cut out, and stop drawing power from the MPPT controller. In other words, the battery charger will present a high impedance to the MPPT controller.
Q: Can I connect an MPPT with an inverter directly?
No! MPPT solar charge controllers help to flow the current efficiently into your depleted battery. If we connect an MPPT solar charge controller directly to the inverter, your soalr system can get damaged, but if not damaged, there will be zero input in the inverter. So connecting MPPTs directly to the inverter is a bad idea!
Q: How big of a MPPT solar charge controller do I need?
You take the total watts of the solar array divided by the voltage of the battery bank. That will give you the output current of the soalr charge controller. For example, a 1000W solar array ÷ 24V battery bank = 41.6A. The rating of the charge controller should be at least 40A.
Q: Is MPPT better than PWM?
MPPT controllers are generally pricier compared to PWM controllers. However, they operate more efficiently under specific conditions, enabling them to generate more power using the same quantity of solar modules than a PWM controller.