45A Charge Controllers

45 amp charge controllers

Operating a solar panel system with a battery bank without a charge controller is outright dangerous. A quality model can significantly increase the battery's lifespan while also enhancing the system's overall security. We recommend using 45 amp solar charge controllers for smaller PV systems, such as those utilized in portable, RV, boat and similar applications.

What a 45 amp charge controller can do

As its name suggests, this important piece of equipment controls how the charging process works. A 45 amp solar charge controller usually has the following features:

• Controlling the voltage from the solar array to keep the battery from getting too full
• Avoiding deep discharge and overcharging
• Safeguarding against reverse current. Electricity flowing uncontrollably from batteries to panels at night can cause fires
• Performing battery bank checks. A charge controller is useful for keeping tabs on the battery and any loads hooked up to it

When you need a 45 amp charge controller

A 45 amp charge controller won't be able to handle a large set of solar panels. You should use it if your project is medium-sized or small, like a few 200 W solar panels. There is a more accurate way to figure out if you need a 45 amp charge controller. To do this, you will need to divide the wattage of your panels by the voltage of your battery bank.

For example, if you have five 100 W solar panels and want to charge a 12 V battery, you'll need a charge controller that can handle 41.66 A (500 / 12 = 41.66). A 45 amp charge controller would be more than enough in this case.

How to choose the best 45 amp charge controller

When choosing a charge controller, one of the most important things to think about is whether to go with pulse-width modulation (PWM) or maximum power point tracking (MPPT).

It would be cheaper to use a 45 amp PWM solar charge controller. Also, because these controllers are not as complicated, they last longer. Between ten and twenty years is how long a PWM charge controller should last. The long life and low cost, however, come at the cost of efficiency. Using a 45 amp PWM solar charge controller would make it hard to customize the charging process and give you only 75–80% efficiency. Also, when the voltages of the panels and batteries don't match, this type of controller loses too much energy.

A 45 amp solar charge controller costs more if it uses MPPT technology. In exchange, you gain up to 99% charging efficiency and more control over the charging process. Depending on the manufacturer, the average lifespan of these controllers is between 10 and 15 years.

Why us?

If you're looking for a 45 amp solar charge controller for sale, we have a wide selection for you to choose from.  We encourage you to contact us with any questions you may have. Here are a few reasons why you should consider working with us:

• Fulfillment centers both on the East and the West coasts of the USA
• Orders are processed within 24 hours and shipped within 48 hours
• The lowest 45 amp solar charge controller prices on the market
• Delivery in 5-7 business days
• Only reliable manufacturers
• 100% genuine equipment

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