60A DC-DC Battery Charger 12V for Lithium/AGM/Gel, for RVs & Boats

I installed these units to charge the 2x 600ah battery bank(s) shown above. My instalation draws power from a 250 amp engine alternator. The charging units have primary input and output hookups of solid metal with machine screws to secure the wires. They also have 2x additional wire inputs. One wire input activates the unit, it will not charge untill voltage is applied to the "D+" terminal. This allows it to fuction as a battery isolator relay, whereby it wont charge untill its told to by the activation wire. It also has a second activation wire for a 50% power mode. This knocks the charging amperage down to 30 amps, and I highly reccomend wireing this lead to a toggle switch. I installed 2x units and found that a 250 amp alternator cannot power more than one of these at idle engine speed. At highway speed and higher rpm, I can run both units at 60 amps. but at night time with all lights on in the RV, I can only run one at 60 amps and the other at 50% power without overdrawing the alternator. The installation instructions indicate that they "may draw upto" 90 amps, but upon installation i havnt seen more than 65 amps. I installed 2 of these units which is kinda crazy, i did it by isolating two battery banks with a giant diode array, in the form of a battery isolator diode set installed "upside down" on the negative terminal side. but take note that a 250 amp alternator can barely power both of them when tacked ontop of the other electrical load for the RV. Installing one unit with a common 130-150 amp alternator it would be advised to install the amperage reduction function to avoid overtaxing the alternator at low engine rpm. The units have internal cooling cans that SUCK AIR from the electrical input side, and EXPEL AIR on the electrical output side. This information is only apparent AFTER installation, so ill include it here. 2 gauge cable worked fine. to install the activation leads, unscrew the tiny screw above the wiring opening, insert the wire, then tighten the screw. This information is not included in the instructions so i include it here. Since you will probibly wire the activation lead to turn the unit on whenever the engine is running, advise installing an interupt switch for that lead, or a giant battery disconnect switch for the voltage input as I did.

I installed the device correctly with the ignition wire that only turns on the device when the engine is running. I talked with renogy twice and we confirmed all the connections were perfect.. This device continued to drain my starter battery and it was also popping 100 amp in line fuses between the starter battery and the DC charger, as I have braided 4AWG going from the starter battery to this charger per the manual. renogy tried to tell me that my starter battery was no good. I informed them that if my starter battery was not providing enough electricity the Red fault light would be on, which is one of the design outputs of their DC charger, per thier manual. I also explained to them if there’s not enough electricity coming from the starter battery it’s not going to pop 100 amp breaker repeatedly when i'm driving. i am military and I called back to duty after i bought this charger so I couldn’t install this until three months after I bought it. amazon they said there’s no return option available. I noticed on the 40 amp charger. They did an upgrade which is an automatic alternator checker so I think this problem is well known. UPDATE: I contacted Renogy 10 days ago and they asked for photos of my installation of the charger which was done per the manual. I informed them the device failed right out of the box. I sent the photos in and they said it would be 24-48hr and i haven’t heard from them after 10 days. I then called them and was transferred many times and received the run around. they are now asking for me to conduct resistance testing on thier own device not connected to anything and to test my starter battery. they said if they’re happy with these results, they’ll send me a return authorization for me to send the device back to them. They will test it and either send it back to me or send another device back to me. This whole process will take many many weeks. so ridiculous. I have no faith in their device now. I’ve never had a company ask me to do electrical tests on their own device to ensure that it works before i can return it to them.

So far no issues. Seems to be well made and had good terminals People claiming it gets too hot are probably not using the right wiring or terminals. It is highly recommended to use pure copper 4 gauge wire and copper terminals. Do not use CCA wire or cheap terminals. If you're not running it at half power don't go smaller than 4 gauge wire. Make sure your alternator can handle a 75 to 90 amp load on top of what your vehicle uses. I correct wiring will cause high resistance and heat, the heat transfers to the circuit board and will damage the unit. It does get hot to the touch but not hot enough to burn. Read the instructions and make sure the dip switches are set properly according to the battery you're using.

Please stay away from Renogy products!!! Sure, there are hundreds of glowing reviews, and I'm glad those users have had some measure of success. BUT YOU WON'T... and neither did I. Also, no UL, or ETL rating, no accredited lab test results to verify safety, just an easy to spoof CE mark for the European Market.. Without that UL marking, this cannot be used in an commercial applications in the US, and in some jurisdictions, residential. That leaves us idiots as the one grey market buyers, who maybe would gloss over that. Then we suffer with their untested equipment. Always keep in mind, when saving a couple of bucks for a charger; is the cost, time and effort involved of all the equipment, house, car or whatever its installed in, if this fails in a spectacular way and that equipment, or house gets destroyed, damaged, reset, etc.... if it's worth it. So all i have a is a small lithium battery that I want to charge when the car is running. I set the dip switches correctly, this is a 12.8V battery, but the dipswtiches need to match the rated charge current/voltage from the Battery BMS, which is 14.6. Regardless, it charges at a pedestrian pace. out of the blue, it does work sometimes and for a little while, something about the D+ wire voltage, the input voltage, the aux battery voltage, temperature, the planets in conjunction, who knows. So the charger has. a lot of variables to consider, Temperature, incoming voltage, external battery voltage, D+ set high from the ignition, etc,etc, etc. The biggest issue with this. that because there are so many variables, you really need transparency to be able to know what this thing is going to behave like. But instead, we have a few jumpers and that's it. It tells us it has capability to do bulk. charging/saturation charging,, etc, But because all of the variables are hidden, or non adjustable, you're just there hoping that its charging in the myriad of conditions it could be exposed to, blindly. But looking at the state of the manual, the confusion they have caused across countless troubleshooting threads, the warranty, the support. Its obvious now, this was a mistake.

Does exactly what I got it for! Install is very simple. I like the terminal design, very secure connections for my wire lugs. Not all lugs will fit in here, but I have found that most 4awg lugs that I purchased in a kit from another Amazon seller have fit perfectly in this device. When others haven't fit, I've been able to cut to size. I noticed that manu reviewers say it runs hot. Mine is definitely warm to the touch when charging at 60a, but I wouldn't say it is hot and I certainly wouldn't worry about the heat generated from the device creating a fire or burn hazard. I've run run this baby now daily for about 1 week and am very happy with this product. I would purchase again and highly recommend this unit!

invaluable item, but I only am able to use for about 300 hrs before they burn out because the internal fans go bad... I expect my 2nd one will die soon since the fans went bad about 100 hours ago. I just wish they used decent fans, lots of work to replace these since I have them positioned in very difficult to access location. If they had decent fans, I would give 6 out of 5 stars, if it would be possible.

I use this to top off my lithium batteries while driving so its purpose is to protect the alternator, and it works very well.

As with all things these days made in China, quality and customer service from the manufacturer is lacking. This is the second one I've had to purchase. The first one had bad cooling fans that made a ton of noise. Tried calling the number with no answer, left a message with no reply. Tried to register the product on the Renogy website but that doesn't work either because they don't recognize the Amazon purchases order number, and if you don't register it than after 30 days, if you want to return it you get the shaft of a restocking fee of 20%. Renogy also wants a SKU# which is a pain unless you just happen to have that handy. This is, by design, made difficult. They don't want you to return anything. I won't buy another Renogy product once this one fails. And I am ashamed our country has come to selling this this garbage. Can't find anything made in this country anymore.

Was delivered on time and worked as charm. I liked it.

Equipo electrónico que cumple lo que ofrece con calidad, estoy satisfecho con la compra

Working as advertised but found out it’s low efficiency - while delivering 57A it takes 89A from alternator. Also there is no low voltage shut down so when car slow and stop on red light and RPM are low voltage drop below 11V and car (radio lights) not functioning correctly while it still sucks all these Amps.

I purchased the 60 amp model. Installed in my truck cap along with an inverter and a 100 amp hr deep cell battery. I installed it to run our Ecoflow cooler, as well as to run some of my tool battery chargers. We took the cooler on our east coast trip. The cooler was plugged into the inverter the whole time for about half the trip. I had the cooler set to 38 deg F. Each morning when I went to start the truck, it turned over slower than normal. I thought that was odd. after a couple days, brought the cooler into the cabin. those mornings the truck turned over just fine. So this is not isolating from the starting battery when the truck is turned off. Did I miss read the manual? Is it not supposed to isolate from the starting battery when it is turned off? I have it hooked into the alternator wire as instructed. Now that we are home I'm going to do some testing with my amp clamp.

The first one I ordered, didn't work right after plugging in. But support was great and I had a new on in two days. No more issues. Would be five stars if the first one didn't arrive without working.