If there is a battery in the system that you are using, you will need a solar charge controller. As the electricity is generated, it moves from the solar power panels to the rechargeable batteries, and the solar charge controller regulates this. Overcharging the batteries can make them unusable - they can get damaged and their lifespan can get reduced.

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The circuit is opened when the battery is fully charged and if it gets overcharged by the solar charge controller that is in charge of monitoring the voltage of the battery. To further charge the batteries, they had to be either connected or disconnected, and this was done by opening or closing the circuit through mechanical relays, which the older solar charge controllers had. The controllers of today come with the pulse width modulation because they have gone through innovation, computerization and automation.

The PWM controller lowers the voltage of the power accumulated in the battery as the battery comes closer and closer to its full capacity. Battery life is increased when its stress is controlled, which happens as it comes close to full capacity. The batteries remain charged or floating forever or for a long time courtesy the PWM.

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The pulse width modulation is quite an advanced one here, and so, no mechanical connections have to be severed or made here. You are sure to love the latest innovations - check out the maximum power point tracking (MPPT) solar charge controller. Any excess solar charge is converted into amperes instead of volts by the MPPT solar charge controller.

Much like the battery in your car, the solar panel power systems also has a 12 volts battery. The solar panels can send more voltage to the batteries than required. MPPT controllers do the crucial job of converting excess voltage into amperage, and because of this, the charge of the battery remains at peak.

Performance of the battery is optimized and it can work for a long time because the battery remains charged. Power loss can also be controlled with the MPPT solar charge controller. The low voltage that runs from the solar panels to the charge controller leads in high loss of energy.

The MPPT controllers help keep a high voltage in the wires therefore there is an unbroken controlled flow of electricity from wires to the battery. To use the PWM, you need to have a battery of 12 volts, and between the solar panels and the solar charge controller you must have 18 volts. The work of the controllers is to convert into amperage any excess voltage.

It is well known that water and electricity flows to a lower concentration area, and this is the principle that the solar controllers use to reduce any power loss. The solar charge controllers also prevent the backward flow of electricity into solar panels. At night, the panels are not producing electricity, and this leads to reverse flow of electricity and battery drainage.

The system has worked hard all day at charging the batteries we do not want the reverse flow to drain them of this collected energy thereby wasting it. Therefore the solar charge controller breaks or opens the circuit after it detects no energy flowing into the battery, thereby preventing the reversal and drainage. You will surely notice the fact that the MPPT controllers are quite costly, but the fact remains that they can still save you money in the long term because of the many advantages they offer.