HQST 30 Amp PWM Smart Solar Charge Controller with LCD Display

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HQST 30A Amp solar charge controller is an intelligent and multifunctional solar charge controller with a dual USB ports design to charge electronic devices.
12V/24V system voltages are automatically recognized. With temperature compensation employed, charging parameters can be automatically adjusted. A wide range of load working modes facilitate the product’s application to different types of load. All of the controlling parameters can be reset flexibly to satisfy the user’s particular needs.
It provides a dot matrix graphic LCD screen and a human-machine interface with a key, which makes operation on the interface rather convenient.
The product provides overcharge, over-discharge, overload protection, as well as short-circuit and reverse-connection protection.
Light control: When daylight begins the light source will turn off; meanwhile, the solar panels will charge the batteries. When there is no sunlight the garden light will switch on.

Size:30A LCD Description: An upgraded 3-stage PWM charging algorithm is adopted. Application of an equalizing charge to the battery periodically or when over discharged, can effectively prevent the battery from non-equalization and sulfuration, thus extending the battery’s service life (with the exception of GEL and lithium batteries. Specifications: Rated Current: 30A Overvoltage Protection: 16.0V Charging Recovery Voltage: 13.2V System Voltage: Automatic Recognition of 12V/24V Weight: 14 Oz Key Features: 12V/24V system voltages are automatically recognized. Charging program options for sealed, GEL and flooded lead-acid batteries and lithium batteries are available. An upgraded 3-stage PWM charging algorithm is adopted. Application of an equalizing charge to the battery periodically or when over discharged, can effectively prevent the battery from non-equalization and sulfuration, thus extending the battery’s service life (with the exception of GEL and lithium batteries). With temperature compensation employed, charging parameters can be automatically adjusted (with the exception of lithium batteries). A wide range of load working modes facilitate the product’s application to different types of street lights and monitoring devices. The product provides overcharge, over-discharge, overload protection, as well as short-circuit and reverse-connection protection. By virtue of an advanced load starting method, large-capacitance loads can be started smoothly. A range of parameter settings and power-down saving functions are available, thus requiring no repeated setting. The product provides a dot matrix graphic LCD screen and a human-machine interface with 2 keys. The user-friendly design of browser and dynamic interfaces ensures convenient and intuitive operations. Boasting an industrial grade design, the product can function well in various tough conditions.

Product Reviews

By far the best PWM controller I have ever used! It actually has a brain.

This little device has completely changed my entire battery management system. It knows about all the phases of charging, and adjusts itself accordingly between regular morning charging, to Boost when necessary, then to Float. All I have to do is make sure I keep water in the batteries. It helps to have the correct battery-filling tool, available here on Amazon. It is like watering a garden in shape, but it has a nozzle that makes sure the levels are correct, with no spillage. After using so many different types of charge controllers, including MPPT (unnecessary for me), this little guy is a gem. It seems to be the only PWM controller with a brain.As for the load output, I had intended to use it to turn on my inverter at a certain voltage, then off again when the voltage got too low, but this unit does not do that. For some reason it thinks the load is just for lights that come on when it is dark. So for me the load output is useless. I now run the inverter directly from the batteries and turn it on and off manually. But that is a small price to pay for having my batteries fully charged and ready to rock and roll when the sun goes down.

I like it and good value.

Installed it today. 01/21/17. Purchased for $20. It work well for me and I didn’t find the instruction too difficult. If I had to say something negative about it, it would the temperature is only displayed in Celsius and it doesn’t display the solar panel’s incoming voltage. However, it does show the amps. Was glad of that.

A great controller. My only complaint is that when it …

A great controller. My only complaint is that when it senses that the battery bank is approaching maximum voltage is simply cuts off the current and does not reduce current to allow smooth charging while keeping the batteries under the maximum charging voltage. This may cause reduced device life.

The settings are nice.

Wow. I really like this. I set it up to keep a small battery charged to run a water pump in my greenhouse. I hooked up a couple small panels and plugged in a USB hub to attach USB powered / charged LED lights.I learned about the settings afterwards and found it very useful. You can set it for always power the load or power the load of 1 to sever hours after charging stops. I set it to recharge the LED batteries after the sun sets.I’m thinking of getting a second for another greenhouse.

Safely does what it’s supposed to do.

Only been using this for a day as a test run, but it’s working exactly like I expected it to. The fact that it constantly cycles through system voltage, battery capacity, fault codes, and temperature is extra handy as I don’t have to keep getting my multimeter out to observe it. Really wish it came with two USB ports (which by the way it says it does in the description, though you can clearly see it only has one on the picture. Might want to fix that) or if the single port was a 2.4 amp outlet, but it still does what I need it to and will probably help keep me from draining the little 10 watt panel/7 amp hour battery system I’m using this for so no worries!

Excellent product!

I love this solar controller. My Renovo controller only had a couple LED lights. This one tells you all sorts of information with a complete readout. You can quickly scroll and tell exactly how many volts and amps your solar panels are generating down to a tenth of a volt. It tells you how many volts your battery is at and what percentage its charged at. It tells you lots of other info with many indicators. For the money, this is an excellent controller for someone wanting to know exactly what’s happening. Not just see a few lights.

Failed After 9 Days of Operation

I had this controller hooked up to a 100 amp hour battery and a 100W panel powering a relatively low power electronics device. The system ran for about 10 days, but the charge controller finally failed. It looks like the battery voltage sensor went bad. Fortunately this device was located relatively close to my house so I was able to swap it out easily with another controller I had.It was exposed to relatively high humidity but not water or moisture.

Works really good for the price!

I am quite impressed with this inexpensive solar charge controller. I did a one day test against my MPPT Blue Sky solar controller and it performed very well. It maintained a charge of 14.4 to 14.6v and went into float mode after a few hours and maintained 13.9v after that(almost exactly the way I have my Blue Sky controller on my AGM battery bank). The only problem that I found was when changing from bank 1 to bank 2 of my batteries, it confuses the controller and does not drop the voltage to what the other bank of batteries were sitting at(12.9v) and said they were at 14.5v (which I know was wrong since I checked them before swapping to the second bank of batteries. It will fulfill my needs since it will be installed in my new camper and the price is right.

Great Charge Controller for the Price

I used this to replace a failed charge controller on my 100w portable suitcase panel. It’s working just fine, I have had no problems with it.

Five Stars

What else is needed to say? Works for its purpose without any problem.

Will by again

I am very pleased with this controller. Great information given on the screen display. Never question the depth of discharge again because the battery percentage is always on the…

Display readings very innacurate - told me a fully charged …

Display readings very innacurate - told me a fully charged battery was at 46%. Connectors are flimsy. Overall not a quality item.

Good PWM charge controller

Been working great since I installed it.

Finally…The One

Been solar charging for about fifteen years, this controller does everything. Settings for all batteries and voltages, turns programable lights on at dark.