Are you considering the best MPPT solar charge controllers to boost your solar system charging rate? Here is the right buying guide for you.
There are many factors to consider when deciding on the perfect solar charge controller for your home or office. The following blog post will explore some of the options that you can choose from.
Besides, you may be confused about getting the best MPPT solar charge controllers. I will strongly advise you on how to make this decision easier for yourself.
This PowerVersity guide will take you through the 5 best MPPT solar charge controllers that are available on the market today.
This post is all about the top 5 best MPPT solar charge controllers, with the best discussed last and the 5th at the top of the list.
The most important features of each controller are highlighted in this list of the best solar charge controllers. This guide is written to make it easy for you to decide which of the controllers to buy.
Furthermore, I outlined some key information that you should know about solar charge controllers. Let’s cover all the basics of solar charge controllers while you sit back and relax.
In this blog post, I will be explaining;
Essential features every MPPT solar charge controller should come with
The five best MPPT solar charge controller
To help you decide which of the MPPT solar charge controller to get, I strongly recommend that you take the time to read through the 5 best MPPT solar charge controllers discussed.
Overview; What is a Solar Charge Controller
A charge controller, also known as a charge regulator, is a current regulator that prevents batteries from becoming overcharged.
Likewise, a charge controller regulates the panel’s output from 16 to 20 volts to what the battery wants at the moment.
In addition, solar charge controllers keep batteries charged to their maximum capacity without overcharging them, preventing battery damage.
Overall, this voltage can run from 10.5 to 14.6, depending on the battery’s level of charge, type, controller mode, and temperature.
Things to look for in a Charge Controller
In terms of size and features, it’s necessary to pick the correct charging controller. Reliability and performance are serious factors for remote systems.
Furthermore, solar charging controllers that are less expensive are less likely to be reliable and may fail to meet critical charging requirements.
More so, in terms of battery bank replacement, site visits, and lost working time, poor performance or maintenance might actually cost several times the cost of the solar controller.
Overall, solar charge controllers must be built to withstand damage because they deal with a lot of heat and must appropriately handle it.
Functions of Solar Charge Controllers
A battery that is fully charged will not accept energy from the solar panel. The battery voltage is expected to rise to a high level when the solar panel supplies current at its maximum pace.
Moreover, this excess energy is not absorbed and instead splits the water in the electrolyte into hydrogen and oxygen gases. Water loss occurs as a result of the splitting of the water in the battery, which could result in a small explosion.
Furthermore, overcharging will reduce the battery and is likely to cause it to overheat.
In addition, the higher voltage may cause the inverter to shut down or cause problems with the loads.
As a result, overcharge protection is essential to help reduce the amount of energy supplied into the battery before it reaches the set overvoltage range.
Finally, voltage regulation, often known as overcharge protection, is the most necessary feature of a solar charge controller.
An overload occurs when a higher current is sustained than the allowed current limit, which is harmful to the system.
Likewise, overheating and a fire hazard will result from this overloaded condition. A short circuit in the cable can result in overloading.
However, overload protection and a rest push button are included in the solar charging controller.
Lastly, overload protection, which is provided by a circuit breaker or a fuse, is highly useful.
Charging of lead-acid batteries
The solar panel-generated power must be used to charge the deep cycle lead-acid battery in a controlled manner. There are four stages of charging;
Best MPPT Solar Charge Controller; Bulk Charging
Bulk charging is also called current charging. The charge controller charges the battery in constant current mode at high voltage if the battery is at a low level of charge, such as 20%.
More so, this function fills the battery bank to the system’s required capacity, which is usually around 80%-90% of its maximum capacity.
The battery will be at roughly 80%-90% of its full capacity once the bulk charging stage is completed.
However, as the charge controller’s internal resistance is increased, the voltage reaches its peak, and the current is then drawn down.
The battery bank is nearly full when it reaches this point. Charge controllers, on the other hand, send small tickles of charge into the battery as maintenance charging if the charge leaks out of the battery bank through various ways outside of usual battery usage.
Moreover, to avoid overcharging, the feeding voltage is normally just above the battery bank’s voltage.
MPPT Solar Charge Controller; Equalization and Desulfation
Equalization is the method of careful overcharging a battery bank to overcome harmful chemical results like division and sulfation.
More so, after the float stage, when the battery capacity is full, this maintenance feature is used, and it is commonly referred to as the fourth stage of charging.
However, after the three charging processes have been completed, equalization is not always performed.
Equalization charges are normally applied once a month to a few times a year.
Low Voltage cut-off and Over-discharge protection
The battery’s life is determined by the depth of discharge. The battery can be deep overcharged and drained out when loads are connected regularly.
Likewise, deep discharge affects the battery’s capacity and life by a certain amount. The battery can be damaged fast if it is left in this over-discharged state for days or weeks at a time.
Moreover, when the battery hits a preset st point, charge controllers normally open route the connection between the battery and the electrical load to prevent over-discharge.
Finally, the loads are reconnected to the battery once the battery has been recharged to a particular level.
MPPT Solar Charge Controller;Advantages
MPPT solar charge controller has a higher output and therefore more capacity(Amp).
More so, it can reduce your voltage differences and optimize DC loads.
When compared to a PWM solar charge controller, it is more efficient.
MPPT solar charge controller is best for larger systems here the solar panel output exceeds the battery voltage by a wide margin.
Likewise, MPPTs provide a lot of room for power systems.
Lastly, the warranties on MPPT charge controllers are usually lingering than those on PWM units.
Drawbacks of MPPT Solar Controller
The PV panel must be made up of photovoltaic-like strings when using an MPPT controller.
However, without your MPPT solar charge controller manufacturer instructions, choosing a good PV array can be difficult.
More so, when compared to a PWM solar charge controller, it is two to three times more expensive.
Likewise, the physical size of MPPT units is usually bigger.
Lastly, because it has more electronic parts and is put to more stressful conditions, it has a shorter lifespan.
Differences Between MPPT and PWM Solar Charge Controllers
For cold environments, an MPPT solar charge controller is more ideal can also capture and charge the batteries with the excess module voltage while a PWM controller is unable to do the same.
As a result, an MPPT controller can charge up to 20% more than a PWM controller during cool conditions.
Panel to Load Ratio
The batteries will remain close to full charge in a situation where the solar panel is large compared to the load’s power usage from the batteries.
Type of Solar Module
Stand-alone off-grid solar modules have 36 batteries modules and are suitable with both PWM and MPPT systems.
Overall, in order to charge the batteries, MPPT tracks the maximum power point of these less expensive grid-tie modules, whereas PWM does not.
MPPT controllers are normally more expensive than PWM controllers, but they are more efficient under certain conditions, creating more power with the same amount of solar modules.
The cost of the controller becomes less essential than the total cost of the system when picking one method over another.
Finally, if you’re just looking for a controller based on price, make sure to look at system operation, load, and site conditions.
MPPT Solar Charge Controller; Essential Features
The best solar charge controller is one that will give you value for your money by offering usability and durability. However, how useful and durable this product will be, depends on its features and overall design.
Off-grid solar power generation systems usually use MPPT solar charge controllers.
Therefore, let’s consider what makes up the best solar charge controller.
A local serial connection can be used to make set temperature changes, or remote monitoring and control can be done via the internet.
More so, you may use Ethernet connections to set up alarms that send E-mails or text messages when a fault occurs.
5RICH SOLAR 40 Amp 12V/24V DC Input MPPT Solar Charge Controller
“Rich solar MPPT Solar Charge Controllers” ranks fifth on my list of 5 best MPPT solar charge controllers.
This solar charge controller has a lot of amazing features. One of these features is its die-cast aluminum design -this allows it to remove excess heat from the charge controller.
Secondly, this item is compatible with deep battery rotating types. These types are available in sealed, gel, flooded, and batteries types.
Likewise, this MPPT controller offers an advanced self-diagnosis. This makes it easier for your charge controller to easily detect an error code.
Similarly, it has modern electronic protections. It has been enabled to safeguard from overcharging, overload, short-circuiting, and reverse protections.
In addition, this item features an LCD charging parameters screen. With this feature, you can easily see your charging positions such as battery percentage, battery voltage, and more.
Finally, this charge controller has a good energy conversion for the efficient working of your product and long-lasting time.
Basic specification of Rich solar MPPT Solar Charge Controller
- Dimensions: 9.37 x 6.81 x 2.85 inches
- Weight: 5.02 pounds
- Nominal voltage: 12/24DC volts
- Current: 40 amps
4EPEVER MPPT Solar Charge Controller 30A 12V/24V
The “Epever MPPT Solar Charge Controllers 30A ” occupies the 4th spot on this list of the 5 best MPPT solar charge controllers.
The impressive feature of this gadget is its reliable automatic limit function. This ensures that you have max input power, preventing overload of any kind.
This product also offers an excellent die-cast aluminum design. With this feature, there will be no overheat.
“Epever MPPT Solar Charge Controller” has a multiple load control option. These control modes include manual control, light on/off, and time control for safe charging.
Similarly, this product enhances 4 charging options which include sealed, gel, flooded, and user convenient mode for charging.
Another interesting feature of this gadget is, it is widely used for many applications, for example; solar Rv, Field monitoring, household system, and so on.
Finally, this gadget is perfect to meet your various choice of communication in various conditions.
Specifications of Epever MPPT Solar Charge Controller 30A
- Dimensions: 17.8 x 9.33 x 5 inches
- Weight: 6.9 pounds
- Max. voltage: 150 volts
- Current: 30 amps
3EPEVER MPPT Solar Controller 40A 150V
Taking the 3rd spot in my list of top 5 best MPPT solar charge controllers is the “Epever MPPT Solar Charge Controller 40A”
“Epever MPPT Solar Charge Controller” has a lot of tantalizing features. Firstly, it features a wide LED screen display. This remote meter enables it to show the real working time.
Similarly, this product shows the working status in digital, graphic, and in text form. Hence, it is used in monitoring and setting your controller, locating the type, model, data of a controller automatically.
Likewise, it comes with an advanced power tracking function. This provides the best use of your solar charger system.
This item offers a series connection of photovoltaic modules. This reduces the charging current as a way of saving your energy.
In addition, this controller features smart battery protection. As a result, it protects your devices from overcharging, overheating, discharging, and more.
Finally, it is perfect for your home, company, or commercial use. Also, it is suitable for safe charging performance.
Specification of Epever MPPT Solar Charge Controller 40A
- Dimensions: 17.75 x 9.75 x 6 inches
- Weight: 8.53 pounds
- Max. voltage: 150 volts
- Current: 40 amps
2Renogy Rover 60 Amp MPPT Solar Charge Controller
The 2nd position in my list of top 5 best MPPT solar charge controllers goes to the “ Renogy Rover 60 Amp MPPT Solar Charge Controller ”.
Firstly, this MPPT solar charge controller works with RS232 ports, allowing your controller to interact with BT-1 wireless Bluetooth parts.
This product also offers multiple batteries compatible types. Hence, it gives comfort uses like sealed, lead-acid, gel, and flooded choices.
Another feature of this gadget is its easy-to-use LCD screen. This allows you to see the charging parameters and error codes.
Likewise, it offers safety risk protections. With this multiple protection, you don’t have to worry about overcharge, overload, over-discharge, and short-circuit current.
More so, it has a die-cast aluminum design. This enables it to dispatch excess heat from your solar charger.
Overall, it comes with a temperature sensor. Hence, it insulates wires that can cause sparkle if you are around water, snow, or glass.
Specification of Renogy Rover 60 Amp MPPT Solar Charge Controller
- Dimensions: 11.22 x 8.07 x 4 inches
- Weight: 9.28 pounds
- Input voltage: 12 volts(DC)
- Current: 60 amps
1EPEVER 100 Amp MPPT Solar Charge Controller
Finally, “Epever 100 Amp MPPT Solar Charge” ranks first in my picks of the 5 best MPPT solar charge controllers.
This product has loads of impressive features, but one of its outstanding ones is its dual RS485 ports. This makes it easy to connect it in parallel up to 8 units of your bits.
Secondly, it allows you to link the 8 units connected in parallel with an 8 pin ethernet cable for easy monitoring of your data and accuracy.
Likewise, it also supports four charging options. This includes flooded, gel, sealed, to make the charging more efficient.
More so, it provides very high conversion efficiency in any charging power.
Another feature of this gadget is its remote temperature sensor. This enables it to sense and read the temps of your environment.
Additionally, it features a PC monitoring cable. This allows you to connect easily to your window OS.
Finally, with a common negative ground design, this promotes a nice speed response, is reliable, and is perfect for industrial use.
Specification of Epever 100 Amp MPPT Solar Charge Controller
- Dimensions: 19.6 x 13.2 x 10 inches
- Weight: 19.61 pounds
- Max.voltage: 200 volts
- Current: 100 amps
MPPT Solar Charge Controller; Conclusion and Recommendation
That concludes the discussion on all you need to know about MPPT solar charge controller. There are some powerful MPPT solar charge controllers available on the market today.
However, before deciding which one to buy, you should thoroughly consider your needs and consider all accessible alternatives – if any though.
The items listed above are among the 5 best MPPT solar charge controllers available. As a result, acquiring these items will allow your solar system to charge more efficiently with ease.
Each of these charge controllers has all of the features and functionality you want. As a result, you may select the MPPT solar charge controller that best suits your budget and requirements.
However, in this selection of the best, each of these charge controllers has all of the features and functionality you want. As a result, you may select the MPPT solar charge controller that best suits your budget and requirements.
“ EPEVER 100 Amp MPPT Solar Charge Controller” my top option, stands out as the best. To obtain it, simply click the buy from Amazon button.
I hope you like this PowerVersity selection.
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Finally, to read more guides like this, visit our Inverters & Charge Controllers page.