Charger then connects to two 12V 35aH solar AGM batteries from harbor . Location Make sure to install the B2B charger in a well vented space, and do not obstruct the hot air exhaust: Wiring and Electrical This is a good quality hose, very pliable and wide. Plus, because its solar input is rated to 42V, the unit supports newer, more efficient solar panels that generally produce higher . This multi-stage, multi-input battery charger can charge a service battery from a starting battery linked to an alternator or by utilizing solar panels connected directly to the unit. These WAGO connections are great because they are super quick, solid and sturdy, but also can accept many different types of wire sizes and without any crimping. I ordered some more #4 welding cable, some more ring connectors, bought a good linemans cutters from Home Depot (to make a clean cut in the #4 cable), as well as ordered a manual hammer crimp tool to connect the ring connectors to the #4 wire. These types of systems are not new, and actually quite common in drivable RVs, but I will be describing this in terms of a towable camper. Install is pretty simple. This enables the backup battery's charge to be replenished quickly. Those, Lets say your RV batteries are at 13.6V and your truck batteries are a little low, maybe at 12V. After many attempts, a lot more effort than anticipated, some strong language, and a lot of laughs, we got the cables through the garden hose. That would make a nice durable coating/covering for the 2 #4 wires. Renogy's DC to DC MPPT on-board Battery Charger is designed to give you options! The Renogy DC-DC Battery Charger is multi-certified to CE, FCC, and PoHs. Check out our UPDATED DC-DC charger review and installation video:https://youtu.be/6nAFz8mF7k8Happy New Year everyone!We took time off over the winter break to spend some much appreciated time with our family. Show more Show more Show chat. The red dip switched needed to be set for lithium, and in our case, that was : The phone jack , black plug is for temperature regulation (not needed for our Lithium setup), the Green terminal connector, is actually the ONLY on/off switch on this unit. Easy to install and well made. If you have any questions regarding this product, please submit a case. Great bit ov kit once up a running would Recomend, im running 640 watt renogy panels, 2000w Renogy inverter, Renogy Bluetooth, x2 Renogy smart lithium batteries, and dc50 mppt charge controller. Very happy so far. 2. The DC-DC battery charger adopts the design of the DIP switch and it provides 6 charging voltage settings through five gears. step 15 : Fast forward a couple of days. It accepts and regulates a charge from either (or both) your starting battery (alternator) and solar panels, acting as both battery isolator/charger and charge controller. The DC-DC battery charger isolates the input and output to prevent voltage transmission errors and interfere with house battery charging. Is it necessary to connect? Ensure that the maximum charging current provided by the DC-DC battery charger does not exceed the maximum charging current allowed by the house battery. They are available on Amazon as well as directly from Renogy. The DC-DC battery charger will charge your house batteries from the starter battery by 3-stage charging (Bulk, Boost, and Float), to make sure it optimally and automatically charge to 100%. Renogy's DC to DC MPPT on-board Battery Charger is designed to give you options! The general quiet and tranquility of being out camping is part of the magic. Renogy's DC to DC charger packs all the same capabilities as any other manufacturer's, at a lower price point. Once you have read up on how we added a Renogy DC-DC charger to our travel trailer, check out a few of our other posts about the other upgrades we have done: better cellular connectivity when you are in the middle of nowhere and need to work, why we chose lithium batteries and why we love them, lots of other upgrades we have done to our travel trailer. Compatible with a multitude of alternator types, the DC-DC battery charger offers correct charging for AGM, Flooded, Gel, and Lithium batteries. I would like to see the charger use an algorithm when driving, so it measure the solar output which would gain what ever it needs from the alternator. What is a DC-DC charger? With only 244mm in length, 145mm in height, and 1.42kg in weight, Renogy DC-DC On-Board Battery Charger is ready to be installed and adapt to any tiny narrow installation space, resolving your concern from limited room in your vehicle. 3. This is a popular option, especially for folks who might want to run an air conditioner off-grid (although youd likely need more than 2000 watt generator power). These six charging voltages meet the requirements of lithium batteries and lead-acid batteries in order to provide more charging options. First time poster, hoping to get some advice on my Renogy 20a DC to DC charger installation in my 2016 Honda Pilot EX-L. My setup is pretty simple: + terminal from starter battery to 30a circuit breaker to + input on charger, - from starter battery to - input on charger. One note is that you will need to run a wire from the charger to your vehicle's ignition circuit. # 1. They take the voltage and current of the input and transform it to a usable voltage/current for the output. Easily install the compact yet sturdy DC1212 on RVs, commercial vehicles, boats, yachts and many more applications! Step 3 : gather the parts and gear needed for the install. Things are starting to come together, but we still have a looooong way to go in this build.Now, time to get some painting done and get the insulation covered with our new, beautiful 1/4\" Maple wall and ceiling panels!________________We are a couple of full-time travel dreamers who decided to pack up our lives to explore the world - and then 2020 happened. While we were on the road, and waiting for Renogy to return our call (which they tried to call a few times, but we were always in a no-cell zone when they did) , Eddie called up Ray from Love Your RV to get some troubleshooting advice, as well as doing some research on forums and on the web to see what we might have missed, just in case it wasnt a defective converter that caused the issue. Also note, I increased the breaker amps in a subsequent edit to this post. This Renogy DC-DC On-Board Battery Charger with MPPT was specially die-cast aluminum designed for efficient and ZERO dB noiseless heat dissipation. The DC-DC battery charger is installed between the starter battery and the house battery. BTW this mod is working great, when we need it, it really fills up our lithium batteries quickly. For example, a Victron MPPT Solar controller can obtain battery temperature via blue tooth from the Victron Battery Monitor eliminating the need to install a separate temperature sensor for the Solar controller(s). Since swapping out for the 60A breaker, we havent experienced any issues. There are two LED lights above the dip switches, and if it was powered on and working properly, we should have seen a green light on the left side. Attach connector plug to the tailgate of the Truck. The charger needs to select the charging mode according to the battery voltage. We checked that we had good current coming in to the input side of the unit, that was working properly. Exclusively available with the BT-2 Bluetooth Module accessory and Renogy DC Home App available on the IOS and Google Play Stores, you can monitor this device remotely and simply through your phone and stay constantly updated. I put the question out to Matt of the awesome adventurousway.com, why do you need a fuse on battery and a circuit breaker both? And what the heck does that mean ? update : In October 2020 we added yet another 275 watts for solar, as well as another 100ah Battleborn battery for a total of 300ah. Your email address will not be published. We are currently on a different sort of adventure, converting a Ford Transit cargo van into our new full-time home on wheels in hopes of exploring North America and conquering more mountains - and hopefully even the Arctic Ocean!Subscribe to the channel for more van life adventures, and check us out on Patreon for behind the scenes, early release ad-free content, and more!__________________Inquires: richandkirsten7@gmail.com The charger is overheating in Scotland in Mid winter and where the charger sits its about 15c and it has plenty of air. 04-23-2021, 10:00 PM. hi Brian, probably no big deal to leave the 7 pin wired for trickle charge. Its a pretty crude tool, which you need to smash the crimper with a heavy hammer (i used an 8# sledge) onto a very hard surface like concrete. 3. It is able to charge: Flooded, Gel, AGM, and Lithium batteries using multi-stage charging. This is a great piece of kit that is very easy to wire up. This manual showed me the two connections points I needed to make on pages 245 thru 248, one for 70 amps of power going to my DC to DC charger located in the rear of the van and the other was a small 12v signal wire that is used to turn the DC charger on ONLY while the engine is running. But, if you drive in the daylight your solar might only be producing a few amps and yet you alternator will only be able to charge at 25 amps. Stage 1: Boost- this offers the greatest voltage possible when charging a depleted battery. SO this means, it will never enable unless we turn ON the breaker, under the hood of the truck. I have some 4AWG that I think I can repurpose, or I'll just buy new wire off Amazon or something. In countries like the U where the sun is low or never out at all, you need to add a solar power cut off switch, this will fool the charger in thinking its nigh so will go from 50% 25 amps per 50 mode to 100% mode. Get about 46A (40 from DC-DC and 6A from 7-pin. 2. upate 6/18/2020 : we finally got back out on a trip since installing our DC-DC converter. The DC-DC Battery Chargers are the most effective way to charge your house batteries from the starter battery. We had followed the instructions as closely as possible. After 25ft of 4ga wire, the voltage would be down to 11.5V. Is it necessary to connect? hi Steve, thanks for reading my post. update 6/12/2020 : sure wish I had found this guys blog sooner ! What types of battery does the charger support? It came with a positive / negative alligator clip that you can just connect to your battery. yowza. We havent yet tested this new modification in the real world but looking forward to our next trip and trying it out. Solar is to be fitted over the next couple of months again we will be getting a renogy kit, well worth the money our last big item will be 3000w 12v inverter to run all our electrical equipment, We are well pleased with all our purchases. The Renogy DC-DC Battery Charger with unique dual charging options. Renogy's DC to DC MPPT on-board Battery Charger is designed to give you options! What type of alternator is this on-board battery charger compatible with? The all-in-one NEG- terminal with partition design integrates the terminals for solar panels, the array starter battery, and the house battery, avoiding misconnection and making the simple installation. In addition to the charger, and the parts listed above from Eddies list, I also purchased a Blue Sea Systems MRBF Surface and Terminal Mount Fuse Block along with a 60amp fuse to protect the wire between the Truck battery and the Breaker. At this point, the Truck prep and wiring was complete. For boats, the DC to DC charger will be plugged into a dockside outlet for use when the boat is in port. Required fields are marked *. If the battery charger is connected to the starting battery and solar panels at the same time, the maximum input current will be 15A for each; if the battery charger only connects one of the two DC inputs, the maximum input current will be 30A. I had plenty of #4 wire available, so I could easily make a wire long enough to swing around the top of the existing 4 incoming connections to the shunt, and just add my fifth wire on top, and bolt back down the shunt bolt. CaptainMitch. step 11 : slippery silliness ! The charger will overheat and go into error 6 mode when driving using the alternator. With Built-in Maximum Power Point Tracking (MPPT), Renogy DC-DC On-Board Battery Charger will charge your service batteries with maximized solar power, providing 3-phase charging (Bulk, Boost and Float) to regulate the whole charging and ensure the batteries will be accurately charged at the correct voltage levels to 100%. Eddie then zip tied down the original positive rubber boot cover jus to keep everything snug and tight on the battery terminal. See photo 3.4. The RV came with a mechanical solenoid isolator but I believe it was broken. The DC-DC battery charger isolates the input and output to prevent voltage transmission errors and interfere with house battery charging. This side of the DC Charger is the outgoing power, which connects to the camper batteries. Unfortunately, I was now back in Denver by this time, so having Eddie finish the job wasnt in the cards as he was still down in Arizona. 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