ECO-WORTHY 30A Solar Charger Controller Solar Panel Battery Intelligent Regulator with Dual USB Port Auto 12/24V PWM Positive Ground for Lithium，Lead-Acid,Gel Battery

For someone starting out with tinkering with solar these are great for the price.

I used this with a 48v pv system that is rated at 1.2kw. Charging a 12v battery bank, the wires get REALLY hot. So make sure if you are charging a 12v system you have the thickest wires you can cram in those terminals. For 60 amps charging output, you'd need at least 6awg. However, I highly doubt that would fit in the terminals. I've been able to fit 8awg battery connectors in the terminals. Other reviews have mentioned 10, But when charging, the biggest size is best. 8 is probably the maximum.So this little charger works great for some modest 12v set ups, and slightly less modest 48v battery setups. Just keep in mind that lower voltage battery banks need more amps, and that little port can only handle so much.There is a thermometer that plugs into it. Maybe I didn't read the instructions, but I can't seem to find where the reading on the thermometer shows? Likewise after stress testing the thermometer with some heat, it doesn't seem to shut off or impact charging at all.If you are using a couple hundred watts of load on your 12v batteries, this does absolutely fine. Its a solid unit. If you are powering an inverter, be careful. Too much power draw and you'll cook the little wires that fit in the terminal.I believe this is capable of charging a 48v battery bank. That would be far more appropriate given the terminal sizes.

I found it interesting that with the charge controller set to lithium iron phosphate, there is no PWM. Just voltage correction from solar panel voltage to 14.6 volt output. Charge control function is dependant on internal to battery BMS. ( As described in manual if I looked before I bought it) Above you can see the result of this controller and a good MPPT unit. Attached the MPPT unit just a few seconds after eco worthy,so same conditions same panel. MPPT gave 13.92v at 4.1 amps for 59 watts. The eco worthy gave 13.8 volts at 2.4 amps. For 33.1 watts. That is to be expected, nothing wrong with the eco worthy. It is a clean little unit. USB is nice. Load control is configurable and works well intuitive display. Very happy with the purchase.

I love this brand but I'm not happy with this controller. When I received it I was immediately skeptical and boy did that prove to be true.DISCLAIMER: I never used this product because I have a feeling this is just a re branded version of the 9$ - 25$ "solar charge controller" you see everywhere. This to me looks and feels exactly like that controller but with a higher price tag. I didn't want to take a chance on this because I'm just going to to finally switch to a true MPPT controller.This is not a MPPT controller, I know that. It is a 30A PWM controller and PWM controllers like Amps == Parallel panels vs Panels in Series. A can over panel a PWM controller like this one very quickly with just 3, 100w panels. It will not accept that muc VOC input and will probably fry or throw and error code some controllers just fry. Hopefully this one is protected but I'm not about to throw out 30$. So, your only option for PWM is to turn your panels into add BIGGER array using <= 10 gauge wire at 3x the cost to support the AMPS you need to get to 30A.NOTE: I have many eco-worthy panels 3 from bi facials to battery tenders and they are all awesome. I love this brand and stand behind it which is why I'm so upset about this controller. This just doesn't seem to live up to the other high quaility of the eco-worthy brand. That's my .002$ opinion.

It's really hard to beat at the price point. Sure it's not MPPT, but if your array voltage matches your battery voltage (12v for parallel or 24v+ for series) and you're making a smaller system then you're fine. The trick with this solar charger is to match the panel output voltage (12v, 24v, etc) with the battery bank voltage.The connectors it comes with are suitable for 10ga standard sized solar wiring. However, the clamps from the controller to the battery are also 10ga sized. If you're using the "load" side of this charge controller for anything significant, these won't be enough. I wouldn't drive a 3000w inverter off the load side. It would have been nice to see some posts on this thing for the battery connectors which would make me feel a bit better but this controller is suitable for charging. Don't put anything beefier than a car accessory plug on the load side.Out of the box, the display is fine. The manual is decent. It comes with clamp down terminals enough for all the screw down posts. These are crimp type, so you should pick up a crimp tool to use them, along with some heat shrink to dress up the connections. I didn't have any problems crimping them down.The 12v/24v says that it's "auto" but in my case, but the manual says how to change it. The 12v setting was fine for me. There's also setting for charging on a schedule, etc, but honestly you just want the thing "on" when the panels are "on". The default is perfectly fine for this. Selecting the battery should be done by the user, using LI for Lifepo4 batteries. Another nice feature is being able to set the battery voltage levels for things like charging and floating.The positive pole on this is the ground and has a common pole. This means that the system is a positive ground system. Radio operators be aware.There is no bluetooth connectivity which would be nice to have. Build quality is nice except for the plastic buttons which feel incredibly cheap. However given that the system is really set-it-and-forget-it, this is hardly a deal breaker.