Renogy 12V 50A DC to DC Battery Charger with MPPT, On-Board Battery for Gel, AGM, Flooded and Lithium Batteries, Using Multi-Stage Charging, Solar Panel and Alternator

automatically senses the best source of 12v power (between solar, alternator or shore power) to charge my house batteries and has been performing super well in my van conversion

used a 50A DC-DC charger to charge the lithium battery from the vehicle’s starter battery. I also connected an inverter to it. It has Bluetooth functionality, so I can monitor the battery status directly from my phone. Everything works great and installation was easy.

I have a cargo trailer that I use for work with a 2000 watt inverter to run power tool chargers & lights in the trailer. I have a 200 watt solar array connected to the solar input as well as the vehicle smart alternator input. The (2) 100 Ah AGM batteries stay charged through this device to where I never have to plug in my trailer to the house to charge my batteries. What I like about this product is if it’s cloudy and I’m using power then the vehicle will charge the batteries as I’m driving from job to job or I can start the truck for a few minutes and get a charge. This device also prevents voltage feeding back to the vehicle from my trailer batteries as it would if it were connected straight to the battery output from the truck. It also prevents overcharging of the batteries, extending the life. Lastly, the ability to change battery types on this device makes it great to use for different battery chemical types. The price is a little high but it does exactly what I need in just one device.

Renogy will not pay shipping for a warranty inspection. They got all the info proving their dc to dc controller quit working in less than a year. Why spend money on shipping at all? When I can use that money for another brand with better warrantee! Renogy keeps telling me to repeat things like disconnect and reconnect, the easy stuff over and over again. I sent them videos, pictures and a long audio explaining of all the voltage checks. They are wasting many weeks of my time. I will keep updating but this is rediculous. No customer would want their product after all this unsuccessful replication.Update again! I already sent a long audio, long video, and many pictures. There is nothing left that they have not evidence for. I invite them to come look listen and feel the whole thing for themselves. I have had enough repetition. I already explained how it will not work under any circumstances. Udate: I have no idea what IBAN, SWIFT, & SORT CODES are for getting a refund!They still have not clearly addressed my question about fees, restocking fees, possible shippingfees, and who knows what other surprise fees.

I have a full set of Renogy’s products from this controller to the solar panels, Renogy one, self heating batteries etc. when the system works it works really well. When something doesn’t the inconsistent readings even from the app and renogy one controller itself makes figuring out what’s wrong very difficult without randomly replacing parts one by one.

This is a really simple system to hook up. I recommend getting either a bus bar or distribution block for the ground at the very least. I'll be putting a positive distribution block in also. You will also need a second inline fuse for the alternator input. It does come with one 60-amp ANL, but the manual recommends one for both solar input and alternator. Also, in line fuse for your solar panels at the connection. It's redundant but a lot cheaper to replace a fuse than cable, panels or batteries. I haven't had a chance to get my solar panels hooked up, but I have the DCDC charging set up. It works perfectly fine. I'm running a 300-amp alt to a battery isolator for my auxiliary battery bank for my offroad lighting and winch. From that point (for now) I hooked up 4AWG battery cables with jumper cable alligator clips, to an Anderson plug that runs into my cargo trailer conversion. Right now, I'm running 300 ah bank, with a 3500 watt inverter and it's being charged flawlessly when running my truck. When the extra battery cable shows up I'll run a more permanent setup from the starter battery rather than the auxiliary, which I think will shorten charge time drastically since it will be more direct.

We do van builds and this has done great for us.

Not sure why this product is so unusual in the market. Having both vehicle power input AND a solar power input is very helpful to say the least! Came with some nice accessories like terminals and a nice ALN fuse holder. Hooked up easy, does what it says it does. I highly recommend getting the BT2 accessory. I could see that one of the solar panels I bought was defective. I would have not been able to detect that without it. ALSO, I can use the phone app to set a MAX charge current. That is very helpful for when I want to charge my power crate off of a car cigarette lighter socket etc. My project is intended to run a remote office while camping in remote areas. The charger fills a 100Ahr Lithium battery. Inverter is just a little 400w unit. I used a 50A Anderson connector for the vehicle power input and a 30A Power pole for the solar hook up. If I added more solar I would upgrade that. I have a power disconnect switch on the battery to isolate the system when not in use. Enjoy.