Features:

  • ►Rated Discharge Current: 20A; USB Output Voltage: 5V/3A; Battery Voltage: 12V/24V auto. Adjustable power rate with dual USB ports; 3-Stage(Bulk, ABS, Float) charge management and 4-Stage PWM charge
  • ►Functionality: Equipped with industrial-grade STM 8 microprocessor to control the charger and discharge process and it has reliable battery to charge and discharge period management
  • ►Mutiple Electric Protection: Over-current and short-circuit protection, inverse connection protection, low voltage and overcharge protection
  • ►Good Heat Dissipation: Dual mosfet reverse current protection, low heat production(ALL electronic components generate heat when they are running,it is better to shelter them for better heat dissipation, avoid direct sunlight exposure or damp place)
  • ►Easy to Use: Comes with a display that can clearly indicate the status and data, it can be conveniently switched modes and parameter configuration, suitable for home, industrial, commercial etc. Warranty only against products from ALLPOWERS. Any items ordered from other sellers, ALLPOWERS will not be responsible for the After-Sales.
Malfunctioning after 4 months...but working it out...worked out.

I have had this for a little under 4 months and it has died on me. It worked great until a couple days ago when the screen started blinking an empty battery. The battery was 3/4 full the night before and I didn't have anything plugged into it overnight. I disconnected everything and checked each item. The solar panel was fine and the battery was showing an almost full charge. I connected everything again and things were fine for a day and the same problem occurred. I will keep it at 2 stars until I get a response from the company for a replacement. I have updated this from 2 stars to 3 because I was contacted by ALLPOWERS and they emailed saying that they would send out a replacement. I will update again after receiving the replacement and hooking it up to my system. I have received the replacement and my system is working again. I have updated my review to reflect the working item and customer support provided by ALLPOWERS.

It gets the job done.

So far it works as advertised. I wish I could afford a MPPT controller, but this little unit is doing the job. I live in my truck and I have two Siemens SP75 panels running through this controller charging three batteries in the back of my 94 Chevy S10/Tahoe. The panels were giving to me by a friend which I am truly thankful for. The three batteries are car batteries, different CA and CCA, one sealed other two not. (yes I know I should have deep cycle, but you use what you can). I set the float voltage down to 13 volts and the disconnect to 12 volts. So far all is well. As of now... Yes I would buy this product again. Yes I would recommend this to others.

Excellent controller for the price

I ordered and received this item as described on the site. I bought two 12v small panels and connected them in series to get the 24v I needed for my setup. The controller is working fine so far after three days of operation. Great value.

Willing to buy again.

The 20A Solar Charge Controller appears to be working as designed. I also like that the price was low. I did discover what the codes mean: According to instructions: b01 is sealed lead-acid. b02 is gel cell, and b03 flood or open style (old car battery where you tend to the fluid levels in cells). I also wouldn't assume that if you have a similar controller the codes carry over. I would find something in writing from the manufacturer.

Five Stars

Cost effective with very good support

Works great to power my bee hive cooling units I built.

This charger works great. I use this to charge a garden tractor battery and power cooling fans in my bee hives. I am powering 4 fans 24/7 with a 20 watt solar panel. The only thing I would like to see is a dawn to dusk mode so I could program the unit to turn the load off at night in early spring and Autumn when the nights get cool here in Louisiana. As of now I use a 12 vdc relay to do this function by connecting the relay to the load and the fan leads to the battery using a 2 amp in line fuse on the fans.

Simple with good read outs

I love this little solar charge controller. I used it in circuit with a new solar battery and a solar panel on my truck camper and it does the three stage charging on my solar battery, and gives you a read out of the voltage of the battery. Good price for a lot of function.

Five Stars

Using in an inexpensive remote camp build. Loving them.

Works fine so far and 10 guage wire worked fine!

I was a bit skeptical about putting this all together with my portable solar panel after reading the reviews, but it was super easy. Even for someone who is NOT mechanically inclined, like me. I was worried about the wire connections since so many posted that 10AWG was difficult. I didn't find it difficult at all with a cheap pair of wire strippers/crimpers, pliers, scissors and some YouTube instructional videos. I was able to also connect the MC4 connectors easily (though I recommend getting extras, one boo boo and it's hard to start over with the same one. Amazon has 5 pair for about $5. My local RV store wanted $20 for one pair!) I only wish it had temp readings in F in addition to C. Otherwise, seems to be just what I needed, though I'm not sure I fully understand all of its functions since I'm a complete novice at this. Will post again after my next camping trip if something is noteworthy one way or the other.

A good controller with a nice surprise! Good customer support.

PROS: * Inexpensive * Two USB ports * Display screen * 12v and 24v * Supports multiple battery types * Very customizable * D2D Dusk to dawn (unexpected feature I really like) CONS: * PWM Pulse Width Modulation rather then MPPT * Connectors are a little small (It will fit 10 Gauge wire but just barely This is a PWM controller but for the money you save buying this controller rather then an expensive MPPT controller you could buy an extra 100 watt solar panel. For instance a Renology 20 amp MPPT controller is around $100 more. My last 100 watt panel cost me $108 delivered. The more expensive MPPT controller might be a better choice if space is extremely limited and you need to squeeze out every watt. For the rest of us this is a pretty good choice. The display: It's not the worlds greatest screen and I wish it had a back light but I have terrible vision and I can still see it just fine. If you mount it somewhere dark bring a flashlight. The default screen shows battery voltage, battery level, and whether the battery is charging. Buttons scroll through other information like charging amps, load amps, temperature of controller, and optional settings. The USB ports: These are convenient. I have charged my phone with these ports quite a few times. They are rated to deliver 3 amps combined. You won't be fast charging with these ports but they work fine. 12v / 24v: I won't go crazy explaining this but 24v can be better with long cable runs. I use 12v with short runs for convenience. This controller will do either. If you need 48v they make a controller that does that too. Supports multiple battery types: I use lead acid but you can also use Lithium Ion, and LIFePO4(Lithium Iron) For portable use Lithium Ion and LIFePO4 can save weight! Customizable: I won't go into every setting here but you can change things like cutoff voltage, charging voltage, low voltage reconnect, and turn short circuit protection on and off. D2D Dusk till dawn: I wasn't expecting this feature. This allows the controller to automatically turn on things like lights as soon as the sun goes down. If you want to set up outside lights this feature works great. I have been using this feature for solar night lights that actually work. This would be great for lighting a cabin, remote shed, or a long driveway. I was going to subtract a star because the manual didn't contain details on some advanced features but when I contacted the company they quickly responded with an updated copy of the manual. The updated version explained some features I previously didn't understand.

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