30A 12V/24V PWM Flush Mount Solar Charge Controller - Negative Ground

$59.99 $39.99
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For those committed to off-grid living, this HQST 30 Amp Flush Mount Solar Charge Controller allows you to keep your battery powered via solar panels wherever you happen to be - traveling by RV or truck or maintaining a convenient and reliable solar-powered solution for your cabin or home. The flush mount design provides clean and tidy surface installation. Negative grounding and multiple charging protections ensure safe usage. 

Key Features

Aesthetically Clean Installation
This HQST 30A PWM solar charge controller with flush mount capabilities is designed to be seamlessly mounted onto a flat wall surface, producing an aesthetically clean, and integrated look.  

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Negative Ground, Safe Charging
This is a commonly used negative-ground controller, suitable for most vehicle and solar off-grid systems. Equipped with multiple protections, including over-discharge, over-voltage, over-current, reverse current, short-circuit, and reverse polarity, this 30A PWM solar controller prevents damage from installation mistakes or system faults.

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Compatible with Most Systems
Automatic battery recognition for 12V and 24V AGM, GEL, Flooded, and Sealed Lead-Acid batteries. Lithium batteries can be set manually. Supporting 12V (up to 450W) and 24V (up to 900W) solar systems, this solar controller can be widely applied on motorhomes, sheds, boats, water pumps, and more.  

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Smart PWM Charging
Utilizes the three-stage charging (Boost, Float, Equalization) algorithm to regulate the flow of electricity to achieve optimal battery (lead-acid) performance and longevity. Two-stage charging (Boost and Float) for lithium batteries.  

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Easy to Use
The backlit display allows you to see key information clearly, even in a dark environment. The USB-A port supports charging current up to 5V/1A for your mobile device, like a mini fan or smartphone. The compact design is ideal for areas with limited space.

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30A Negative Ground Pem Solar Charge Controller

Package Includes

1 x 30A PWM Flush Charge Controller
4 x M4 12mm Bolts

HQST 30A PWM Flush Solar Charge Controller

HQST 30A PWM Flush Solar Charge Controller
Electrical Parameters
Rated System Voltage: 12V/24V DC Rated Charge Current: 30A
Max PV Input Power: 12V/450W max, 24V/900W max Max PV Input Power: 55V max
Equalization Voltage: Sealed: 14.6V (12V), 29.2V (24V); Gel: None; Flooded: 14.8 V (12V), 29.6V (24V) Boost Voltage: Sealed: 14.4 V (12V), 28.8V (24V); Gel: 14.2 V (12V), 28.4V (24V); Flooded: 14.6 V (12V), 29.2V (24V); Lithium: 14.2V (12V), 28.4V (24V)
Ground Type: Negative USB-A Output: 5V/1A max
Mechanical Specifications
Dimensions: 6.69 x 5.12 x 1.89 in/170 x 130 x 48 mm Weight: 0.99 lb/0.45 kg
Terminals Size: 8 AWG to 14 AWG  
Environmental Data
Protection Level: IP32 Operating Temperature: -31°F to 113°F (-35°C to 45°C)


Warranty Information

  • 1-year material warranty

1. What is the ground type of this charge controllers?

Negative ground controller. A negative-ground controller is more common and can fit most vehicle systems. When in use, you can connect a cable to the negative terminal of any device in the wiring system.

2. Will this work with sealed lead-acid (SLA) batteries and lithium batteries?
Yes, it works. This solar charge controller supports LiFePO4, Gel, Flooded, AGM, and SLA (Sealed Lead-Acid) batteries.
3. Can I use this with solar panel only? No battery backup?

No, you can't. The controller's purpose is to safely control the charging voltage and amperage delivered to the storage battery bank. The controller is powered by the battery, not the solar panel(s).

4.Why do I need a solar charge controller? What are PWM charge controllers?

A solar charge controller is a regulator for your solar battery that prevents it from overcharging. Batteries are rated for voltage capacity, and exceeding that voltage can lead to permanent battery damage and loss of functionality over time. Solar charge controllers act as a gate to your battery storage system, making sure damage doesn’t occur from overloading it.

PWM (Pulse Width Modulation) Charge Controllers work by slowly reducing the amount of power going into your battery as it approaches capacity. When your battery is full, PWM controllers maintain a state of "trickle", which means they supply a tiny amount of power constantly to keep the battery topped off. PWM controllers are more suited for small DIY solar systems with a couple of low voltage panels and a small battery.

5. Will this charge controller work for a 36V lead acid battery bank or 48V lithium battery?

No, it only supports 12V and 24V batteries.

6. Does this 30A PWM charge controller have a built-in 30A fuse for the rated 30A load output?

No, it doesn't. We recommend adding an external fuse between the charge controller and battery bank for safe system operation. To determine the fuse size needed between the charge controller and battery bank, you can match the amperage rating on the charge controller. For instance, if you're going to install this 30A charge controller, we recommend using a 30A fuse.

7. How many watts can this 30 Amp charge controller handle?

The maximum input solar power for a 12V battery system is 450W while for a 24V system it's 900W.

8. When does the USB port have power? Only when the solar panel is outputting power or will it pull power from the battery?

The USB port pull power from the battery.

If you have further questions, please feel free to contact us .