If you are looking for the best PWM solar charge controller, I guess you have chosen a PWM charge controller rather than the popular one. MPPT solar charging option and already understand the differences.
Before making the final purchase, review the differences between the types of charge controllers once again.
In this article, I review PWM charge controllers that I believe are some of the best options available right now. I will provide a comparison chart so you can narrow down your choices, then I’ve included an overview of each charger.
Finally, in the reviews below, I reviewed the 20A charge controllers. Each brand manufactures quality charge controllers in different amperages and types (PWM vs MPPT).
When to use a PWM charge controller
- A PWM charge controller should be used for small systems. It is not intended for large systems with complex systems.
- If price is an issue and you have a small system, this is a good charger. It is cheaper than MPPT chargers.
- If you are charging a 12v battery, use a PWM charger with solar panels with a maximum supply voltage (Vmp) of up to 18V.
HQST 20A PWM Solar Charge Controller
This multi-functional and intelligent 20A solar charge controller is equipped with two USB ports designed to charge electronic devices – a feature that some competitors lack.
The product provides overload and overload protection as well as short circuit and reverse connection protection.

This 20A PWM charger has multiple advanced features for a very reasonable price. The charger is compatible with many types of batteries and has automatic temperature adjustment.
Moreover, it provides a dot-matrix graphic LCD display and human-machine interface with a key that facilitates operations on the interface.
Charging parameters can be automatically adjusted with temperature compensation, and a wide range of charging operation modes make this charge controller easy to use.
In addition, thanks to an advanced load starting method, large capacity loads can be started smoothly.
Renogy Voyager 20A 12V/24V Solar Charge Controller
Renogy designed and built a very good controller at a price economic price which is waterproof and has many useful features.
This PWM controller uses SMART technology and features 4-stage bulk charging (Bulk, Absorption, Float and Equalization), ensuring your battery is protected. In addition, the charger supports many battery types (gel, AGM, flooded or lithium batteries) and detects 12v or 24v batteries.

The Voyager is an excellent PWM controller for boats and harsher environments as it is waterproof and durable. It’s also a simple controller without a lot of tuning adjustments required.
The charger is IP67 rated, so it is waterproof and well sealed. It also has additional safety features: reverse polarity, overcharge, short circuit, reverse current, overcharge and overdischarge. This ensures that the battery is protected.
One of the things I like is the LCD screen. There is no need for a meter anymore since all the information you need is displayed, although it would be nice to see the watts.
This solid PWM controller from Renogy gets great reviews from consumers and should be on your short list of considerations.
ALLPOWERS Best 20A PWM Solar Charge Controller
ALLPOWERS Solar Charge Controller manages the overall performance of a solar panel and battery. With a discharge current rated at 20A, it offers multiple electrical protections. The charger also has a reliable battery for managing charge and discharge periods.

This charge controller can only be used with lead acid batteries, but it does its job well and receives positive feedback from users. With advanced security and performance features, it’s a great price.
Advantages
Multiple security protections
This charge controller is only suitable for lead acid batteries and offers an adjustable power rate with two USB ports as well as 4-step charging management and 4-step PWM charging. This charger also has good protections – short circuit, overload, reverse protection and good heat dissipation.
Additionally, the controller provides a digital display function which provides controller status and data information. It can be easily switched between different modes and its settings reconfigured.
This simple and easy to use controller with limited uses, but he does his job.
Morningstar – 20A PWM Charge Controller
This 20A PWM charge controller is more expensive than other charge controllers on this list, but it’s also made by Morningstar and backed by their 5-year warranty. Morningstar is known for its quality products and claims that this charge controller has “the lowest failure rate in the industry.”
This is a no-frills charge controller with no display and only a few LED operations monitoring its operation. Users will tell you it’s good because there’s never any reason to check out this reliable charger.

Morningstar has a reputation that’s hard to beat, and this 20A PWM controller has a 5-year warranty to back it up. This durable, industrial-grade controller can withstand almost any condition.
This charger has a low voltage disconnect and charge in 4 steps, as well as safety protocols – over voltage, short circuit over current and reverse polarity conditions. It also has self-diagnostics and factory settings, so no installation settings are required.
The charge controller is also durable and able to take abuse, with epoxy encapsulation, marine terminals and cover for lugs. The polycarbonate enclosure for the charge controller is industrial grade and one of the many features that sets this charge controller apart from many other controllers on the market today.
If you want a reliable charge controller that you can set and forget, this is the PWM charge controller you need.
Summary – 20A PWM Charge Controller
Although an MPPT charge controller is more efficient, it is not always necessary for a small system. In many cases, it is more economical to purchase a PWM controller.
Similar Items
(Visited 134 times, 1 visits today)
Some of the links in this article are affiliate links. This means that when you click on one of these links, I earn a small commission at no additional cost to you. Also, as an Amazon Affiliate, I earn from qualifying purchases.