Ampinvt 80 Amp MPPT Solar Charge Controller 48V 36V 24V 12V Auto, 80A Solar Panel Regulator Max Input Power 1100W-4500W, for AGM Sealed Gel Flooded Lithium Battery

Update: so the screen flashes on and off sometimes I check it and it just off the screen had to be reset a few times it stopped letting me adjust the charge voltage fixed after factory reset which erased all my logs emailed the MFG they wanted me to take it apart which is normally fine but the thing is brand new so that's pretty weak they also wanted me to stand there and try to catch the screen malfunction if I did not they would not help at all 1 day past return time DON'T BUY support was non-existent Always the question with equipment like this is how long will it last I have always overrated equipment if you keep 70% of load it will last longer so far it works great perfect even I love it I have 2000watts of solar on a 24v system it does graphs and reports logs and so on its a great piece of equipment IF IT LASTS

It is up and running for one week. I have 8 panels at 250 watts per panel. 4/2 set up. Working very well. Two 25 volt batteries. 100 amp hour per battery.

I bought this charge controller for an off-grid solar system, to charge Lithium Iron Phosphate batteries. I found the settings not quite as precisely adjustable as I wanted for this battery chemistry. The controller is solid, with sizable lugs that easily accepted my 4 gauge battery tray cables. Setting it up was not too complicated, though I did have to search a couple times through the menu to find exactly the settings I wanted, and google was my friend on that count, as the instructions are less than overwhelming, lacking detailed information. The display was decent, and relatively easy to read. I did end up returning this cc though. The reason I eventually returned this cc was the fan noise. Whenever the output charging power exceeded 15 amps on a 12v system, the fan came on, even if the unit itself was not hot. The system is installed inside my tiny home yurt, and when the fan kicked on, it was not only annoying, but hearing tv, or other audio was challenging. The fan would turn on above the 15 amp threshold, then off again when clouds came along. A charge controller should be seen and not heard. It was very distracting. I suppose this would be a fine CC for Lead acid, or AGM batteries, as long as it was installed in a non-residential location, but the slightly lacking adjustments, and the fan noise was just a deal breaker. I wound up spending twice as much for a much better unit without a fan, and voltage adjustments in the hundredths of a volt range. My chosen replacement was the Victron 150v/100amp SmartSolar, and it hardly gets warm running 55 amps through it, and it has no fan.

Compré este controlador de carga solar para un sistema de paneles solares y ha sido de mucha utilidad. Lo instalamos en Cuba como parte de un kit solar y ha funcionado muy bien. La pantalla digital es clara y permite monitorear fácilmente el funcionamiento del sistema, incluyendo el estado de carga de las baterías y otros datos importantes. Esto ayuda a tener un mejor control del rendimiento de los paneles solares. Hasta el momento ha trabajado de forma estable y ha cumplido con lo que promete. Lo recomiendo para quienes buscan un controlador práctico y fácil de supervisar.

Hace un excelente trabajo en mi sistema, compraría otro. Actualmente maneja 40 A en mi sistema de 25.6V.

Set up was easy. Very easy to follow instructions so I was very impressed. Unit worked perfect for about a month, them just shut off. Absolutely piss poor customer service. When I wanted to return they wanted me to send video's of the screen while doing a few different things. Unit was DEAD!!!! How could I send the videos they wanted?? DO NOT BUY THIS UNIT !!

Lo mejor que puedes obtener para tu familia en busca de instalar paneles solares , se lo compré a mi madre y ahí está feliz . Un 10/10

Works like advertised very easy to install and use. Lots of functionality and affordable price.

Voltage reads 0.3volts off compared to all the rest of my equipment ... makes settings even more difficult to decide for my lithium batteries Wish it had a quieter fan for low setting.

Good controller. Was installed 2 years ago. Works very good

Facile à lire. Se que j'ai pas aimé la langue en français n'est pas admissible.

Installed and programmed for a 24VDC battery system, once it reaches 29VDC, it pulsed the battery with 55VDC cyclically until turned off. Broke my $1500 inverter.... luckily the lifepo4 battery BMS protected itself. Turning the charge maximum voltage to 27.3VDC stopped the 55VDC pulses...

It claims to be compatible with lead acid and lithium batteries. The most basic acceptable charging method for these is constant current charge “bulk” which takes the batteries up to some voltage value, commonly 14.4-14-7 on 12v battery. Then constant voltage until current drops. Then a float. The description makes it sounds like it has 3 step charging. In practice this charge only float charges at a single voltage. Its constant current is only the current limit of the charger and just arrives at the float voltage. Neither lithium or lead acid can be properly charged with this method. These could work for lead acid in stand by situations where there is no daily load. Lithium batteries will not charge properly. Either compromising too high of a float, or less than full capacity use of the battery. Lead acid in loaded applications will suffer from sulfating. I returned the product as we were having issues with low AH capacity on lead acid batteries, due to not getting a topping charge. Other than charge profiles, I really like the product. Strong lugs, decent construction. They do charge batteries and doesn’t seem to have a high parasitic load. If they could update the software, if that’s the limiting factor; these would be great.