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The reason for the ever gaining popularity of solar products despite their high upfront costs is simple. The long term savings are much higher! Solar Power products should be robust enough to last for years to recover the initial cost plus give huge savings too. That’s where quality of these products comes in. For a solar power product to yield benefits its quality should be outstanding; otherwise it won’t last long enough to do so. When we talk about the durability of a solar based PV system, one question that hits our minds is the batteries. How long will the batteries last or what is the typical life span of the batteries? After all batteries don’t come cheap! Solar charge controllers are therefore one of the most critical components of a solar PV system because the life of the batteries are totally dependent on it. A charge controller’s task is to regulate the power going from the panels to the batteries. For example on a very brighter day the power generated from the panel may exceed permissible limits and in turn harm the batteries. The charge controller control and makes sure that right amount of power is flowing to the batteries.

What is PWM Technology and why use it?

Pulse Width Modulation (PWM) is the most advanced technology pertaining to charge controllers and they perform constant voltage battery charging by switching the solar system controller’s power devices. When in PWM regulation, the current from the solar panels tapers according to the battery’s condition and recharging needs. Charging batteries using solar power requires challenging technology like PWM for prolonging the batteries’ life. The issue with batteries is that, while charging and discharging, they release lots of gases that can reduce their lives. An ordinary solar charge controller cannot regulate the charging and discharging that accurately hence gassing problem arises. A PWM system works on algorithms; so the PWM algorithm gradually reduces the charging current to avoid heating and gas releases of the battery, yet the charging continues to return the utmost amount of energy to the battery in the unswerving time. The result is a higher charging efficiency, quick recharging, and a healthy battery at full capacity. Some of the advanced Pulse Width Modulation Charges also have features like recovering lost battery capacity, increase the charge acceptance, equalize drifting battery cells, disulphate (removing excess sulphur deposits) the battery, regulate battery heating & gassing and prolong battery life.

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