Solar Charge Controller 100A, Solar Panel Regulator for Lithium,Lithium Iron Phosphate Lead-Acid ,PWM Solar Panel Controller 12V 24V,1 USB Busbar ,GREEN

Excellent item.

Muy bueno .lo compre para los paneles solares

This is a basic PWM controller, not an efficient MPPT, but sometimes a simple controller is all you need. This is pretty easy to set up, the screws of the "teeth" loosen to allow inserting the stripped ends of your setup's wires, then you just screw them back down tightly to secure them. Once this is connected to the battery you can short press the menu button to cycle through various options, then long press until the option starts flashing and use the up or down keys to adjust it. The only real option to worry about is battery type, the correct voltage options for each type are already given when you select it. This does remember all of the settings you adjust even after being powered off, so you probably only ever need to deal with the buttons once.The display itself is a basic LCD with no backlight, and it is murky, not sharp, so it is not easy to see in deep shade, but it works. It shows the current battery voltage when it is not charging, and when charging shows the voltage it is sending to the battery, but nothing fancy like the total watts currently being taken in from the solar panel or anything like that.The real reason to choose this type of controller versus a simpler one with only two cords is for use in a permanent setup, like a tool shed, so that you can use the DC Load connection to automatically run a light at night, or a cooling fan during the day. The menu lets you adjust between always on, dusk to dawn, or a custom hours setting for the load, and you can also toggle it on and off manually with the down-arrow button if you want to, like a light switch. The DC Load is also aware of the battery cutoff voltage, which you can adjust manually, so it will shut off before draining the battery. It's pretty convenient once you get it installed and hooked up the way you like it. I ran a 12-volt RV light bulb off of the DC Load just fine and found it pretty handy.The USB ports are adequate for charging your phone if you really need them, but they don't support fast charging. They are also clearly not waterproof, even the cooling back plate is just a metal square screwed down with no sealant. This is very much for mounting inside a shed, where it is out of the elements, or for using under a covered porch, but don't even think about just leaving it out in the open.Just to get this tested out and make sure it does well before getting it set up seriously I used it with a 50 watt solar panel to charge a 12Ah LiFePO4 solar battery, and it did quite well. The controller itself didn't get hot, and it charged the battery just as fast as with any other PWM controller I have used before.Overall this is rather basic- a weak display with no backlight, simple PWM control, and a kind of flimsy feeling plastic body with a non-finned, flat metal cooling plate on back, but it does what it needs to do and does it fine. I wouldn't choose this as my main controller, but for the smaller battery I use to run some lights and fans and charge some yard tools with it is just fine.

Arrived broken, controller board loose in case

Kinda works. Bought because my Windnation controller died . It said it would work with lithium iron phosphate . I couldn't get it to the lir setting . But for 11 bucks ! I'll keep it to use on some solar panels I'm getting with a gel battery.

As advertised

Little unit seems to work fine; not too hot, sort of easy to connect wires in labeled position, cheap. Worked great for my above average 2K Watthours set up I built for under $500. I run my desktop computer off this free solar DC all day (and night in the summer), so it's not just used for emergencies, meaning that whole thing should pay for itself in under a year.One reviewer said he couldn't get the setting onto b3 for his liFP. The trick there is you have to hold down the main button again once you get to the correct setting until it blinks, then you can set it to the third position with the + key. They tell you that in the pamphlet, but it's pretty thick into the Chinese cryptic. This is a new review, so if it fails rapidly, I'll update then.

Bought another of these for Lithium batteries and things charged fine but then I got a seperate Solar battery charger with a really cheap charge controller like this but it had a LFP SETTING and a Lithium setting and I got better and higher charges faster to my LFP battery. Max charge with this controller set to LFP is 14.4 while at the Lithium setting it is 13.7.Bottom line, if you have an LFP Battery you want a charge with a physical LFP setting to get the most from your battery.Lesson learned, there is a big difference between charge for a Lithium (Cylindrical battery) and an LFP!