30 Amp MPPT Solar Charge Controller

MT3010 is a sort of 30AMP MPPT solar charge controller. MT3010 is belonging to Magic series: 12V/24V automatic recognition, 30A charge and discharge current, the highest charging efficiency is above 98%. There are 4 stages charging way of 30AMP MPPT solar charge controller. MPPT as one charging...

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MT3010 is a sort of 30AMP MPPT solar charge controller.

MT3010 is belonging to Magic series: 12V/24V automatic recognition, 30A charge and discharge current, the highest charging efficiency is above 98%.

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There are 4 stages charging way of 30AMP MPPT solar charge controller.

MPPT as one charging stage cannot be used independent. Generally need to combine the boost charge, float charge and equalizing charge together to finish the battery charging.

MPPT Charge:

In this stage, the battery voltage has not yet reached boost voltage and 100% of available solar power is used to charge the battery.

Boost Charge:

When the battery has recharged to the Boost voltage set point, constant-voltage regulation is used to prevent over heat and produce battery gas. The Boost stage remains 120 minutes and then goes to float charge. Every time when the controller is powered on, if it detects neither over discharged nor overvoltage, the charging will enter into boost charging stage.

Float Charge:

After the Boost voltage stage, the controller will reduce the battery voltage to float voltage set point. When the battery is fully charged, there will not be more chemical reactions and all the charge current transmits into heat and gas at this time. Then the controller reduces the voltage to the floating stage, charging with a smaller voltage and current. It will reduce the temperature of battery and prevent the gassing, also charging the battery slightly at the same time. The purpose of Float stage is to offset the power consumption caused by self consumption and small loads in the whole system, while maintaining full battery storage capacity.

In Float stage, loads can continue to draw power from the battery. In the event that the system load(s) exceed the solar charge current, the controller will no longer be able to maintain the battery at the Float set point. Should the battery voltage remains below the boost reconnect charging voltage; the controller will exit Float stage and return to Bulk charging. 

Equalize Charge:

Certain types of batteries benefit from periodic equalizing charge, which can stir the electrolyte, balance battery voltage and complete chemical reaction. Equalizing charge increases the battery voltage, higher than the standard complement voltage, which gasifies the battery electrolyte. If it detects that the battery is being over discharged, the solar controller will automatically turn the battery to equalization charging stage, and the equalization charging will be 120mins. Equalizing charge and boost charge are not implement in repetition during the full charge process to avoid too much gas precipitation or overheating of battery.

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