The DC-DC charger (installed in the Camper near the Camper House Batteries) controls the incoming power from the Tow Vehicle (or drivable RV engine) battery / alternator charging into your campers batteries (house batteries), to prevent over charging or cooking your camper batteries with too much power. Learn more from, 12V 40A DC to DC On-Board Battery Charger, Battery Temperature Sensor for DC to DC on-board Battery Charger, DCC30S 12V 30A Dual Input DC-DC On-Board Battery Charger with MPPT, 12V 60A DC to DC On-Board Battery Charger, 12V 200Ah Lithium Iron Phosphate Battery w/ Bluetooth, Dimensions:8.3 x 6.9 x 2.7 in / 211 x 175 x 68 mm. Easily install the compact yet sturdy DC1212 on RVs, commercial vehicles, boats, yachts and many more applications! 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%. It has multifunctional safety technology including over-voltage protection, over-temperature protection, and reverse polarity protection to make it safer for use. DC-DC are used in 2 x battery systems where the starter battery charges the house battery to 100% in vehicles or boats. Easy to install and well made. Installing a Ductless mini-split on an outdoors rv travel trailer, Installing a Victron 250watt Phoenix inverter, sure wish I had found this guys blog sooner, F-150 Powerboost. Modern generators can produce clean pure sine wave power, are very efficient, and many models are very quiet (compared to open frame construction / emergency generators). If you have any questions, please contact us in time. The new ground wire was working as expected, and the red dc wire was turning on the DC unit. Attach connector plug to the tailgate of the Truck. Very happy so far. This wire turns the unit on and off whenever it has DC positive. I have also read some strong feelings against Renogy. This means, (in theory without any loss over the cabling runs), the DC-DC Charger can provide up to 480 watts of charging power to our batteries (40amps x 12 volts = 480watts). The DC-DC battery charger adopts the design of the DIP switch and it provides 6 charging voltage settings through five gears. Offers Over-voltage Protection, Over-temperature Protection, and Reverse Polarity Protection to ensure the operation safety. WIth Built-in Maximum Power Point Tracking (MPPT) technology, this battery charger with MPPT maximizes the solar power when charging from solar panels, and ensures that the loads receive maximum current to be used. It allows me to charge my batteries with proper multi-stage charging by both my alternator AND solar panels. This was his first time installing a DC-DC charger in a towable camper, but he was up for it. Now it was time to test our setup ! One simple way for us to solve this issue would be to just add a third BattleBorn Lithium battery. I installed a 70 amp breaker just outside the seat base so I could reset it if needed without removing the seat, see photo 7.10. upate 6/18/2020 : we finally got back out on a trip since installing our DC-DC converter. The compact and robust design makes it suitable for all conditions. Easily install the compact yet sturdy DC-DC battery charger on RV's, commercial vehicles, boats, yachts, and many more applications! The Terminal fuse protects the wire from the battery to the breaker, then the breaker protects the wire run along the length of the truck. The Victron pair you're leaning towards is an excellent choice. 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). The D+ is going to my running lights on my TT after the 7-pin connector. While your vehicle's alternator prioritizes your starting battery, this unit will allow your solar system to charge your service battery first! It has multifunctional safety technology including over-voltage protection, over-temperature protection, and reverse polarity protection to make it safer for use. 50A DC DC Board Battery Charger with MPPT Renogy 20/40/60A DC to DC Battery Charger Rover 20/30/40/60/100 Amp MPPT Charge Controller Rover Elite 20/40A MPPT Solar Charge Controller 40A Set w Holder ANL Fuse, 40 amp (40A ANL Fuse Set w/Fuse) Renogy One All-in-One Smart Panel System Energy Monitoring ; Nominal System Voltage : 12V DC : 12V DC This will give maximum battery cell life. By utilizing the DC-DC temperature sensor, this charger is able to protect your battery from high or low temperature by giving -3mV/C/2V compensation so that the charger recognizes the voltage more accurately and assures stable and constant charging to the battery. And now it was time for a test. 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. Disconnect the two wiring harness connectors under the driver seat, one is white and one is yellow. The issue : after about 5 minutes, the 50amp breaker on the truck would trip. By utilizing the DC-DC temperature sensor, this charger is able to protect your battery from high or low temperature by giving -3mV/C/2V compensation so that the charger recognizes the voltage more accurately and assures stable and constant charging to the battery. Step 5 : make a nice ring connector on the engine end of the #4 wire. This controller supports Gel, AGM, Flooded, and Lithium battery, but please make sure to set the correct battery type once it is installed. Its only when we are socked in for a few days in a row with absolutely no sun in sight that things start to run a bit thin. Option: Monitoring Screen for DC-DC MPPT Battery Charger Series, Alternator Input Voltage : Traditional Alternator: 13.2-16VDC Smart Alternator (Euro 6): 12-16VDC". 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. High-quality DC-DC chargers are three-stage chargers. 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. CE certification. In the picture below, was the existing setup done by Eddie back in the Summer of 2017, showing all the DC loads and Trailer Frame Ground coming in to the left side of the shunt. - They are easy to mount and secure, ideal for off-grid, on-grid, and . DC-to-DC charger. 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%. For example, the Renogy 40A DC to DC battery charger may draw up to 60Amps whilst charging (40 amp x 1.50 (50%) = 60 amps). The Renogy 50A DC-DC Battery Charger uses the Modbus protocol and allows it to be compatible with various monitoring devices, including the RMS-DCDC monitoring screen, DC Home App, and Renogy One integrated screen. Its a great MPPT Solar controller/DC to DC battery charger. Please allow up to 1 to 2 business days for processing and 3 to 5 business days for shipping. Obviously we can change our power consumption habits to adjust to the lack of sun (not using the microwave, not using the electric water kettle etc), but even then, after 3 days with no sun, our batteries start to dip down to low levels. UPDATE Feb 27th, 2020 - I decided to buy myself a Renogy DC-DC charger meant for the task. 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. I verified that, even IF the DC Charger has its red DC ON wire connected to power, the unit will NOT turn on, unless it has incoming DC power. This charger was chosen for price and capability. To get 40A @ 13.6V (544W) youd need 47.3A @ 11.5V. 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. Just the 7 pin trailer connections. Reinstall seat bolts, dust cover and reconnect the two wiring harnesses and the main battery disconnect.Thats it, not too to bad once you've done it but nerve racking the first time for sure. That would make a nice durable coating/covering for the 2 #4 wires. Why it does this, the lithium battery will take the full 50 amps until it reaches 14.4 volts. Might be similar to. Brilliant charger, easy to connect up so long as you use a ground bus bar, but disappointed by the poor instructions regarding the smart alternator, & that there's no temperature adjustment if you have a lithium battery connected (even a Renogy one). this was something I could handle on my own (with some advice from Eddie, naturally). So, we really dont need more battery capacity just an alternate backup system to recharge the batteries when there is no sun for the solar setup OR there was to be some sort of problem with our solar setup (such as a malfunctioning solar controller, etc.). The large terminal screw bolts are far too short for large cables and is a struggle to get the cables screwed down, All you need to fix this problem are longer terminal screw bolts. We just played phone tag, then email tag (with brief, non-answers to my questions). 18-16AWG copper cable recommended. Step 6 : pull the #4 wire through the frame channel. If you have any questions regarding this product, please, 2.65 X 1.38 X 0.55 in (67.3 X 35 X 14 mm), 12V 40A DC to DC On-Board Battery Charger, DCC30S 12V 30A Dual Input DC-DC On-Board Battery Charger with MPPT, 1000W 12V to 230V/240V Pure Sine Wave Inverter With English Standard Socket (with UPS Function), 12V 60A DC to DC On-Board Battery Charger, 3000W 12V Pure Sine Wave Inverter Charger w/ LCD, 12V 200Ah Lithium Iron Phosphate Battery w/ Bluetooth, 12V 100Ah Lithium Iron Phosphate Battery w/ Bluetooth, RBC3050D1S Fuse Installation Instructions, Monitoring Screen for DC-DC MPPT Battery Charger Series manual, Operating Temperature Range : -31F~149F / -35C~65C, Dimensions : 9.6 x 5.7 x 3.0 in / 244 x146 x77 mm, Communication Port:RJ45 (RS485 Protocol), Operating Temperature Range: -4F~113F / -20C~45C, Dimension: 2.76 x 4.33 x 1.25 inch / 70 x 110 x 31.8 mm. This Renogy DC-DC battery charger is compatible with traditional and smart alternators. Renogy DC-DC On-Board Battery Charger is designed to charge service batteries from a starting battery linked to an alternator or by utilizing solar panels connected directly to the unit, offering multiple charging options and ensuring your battery stay fully charged. 3. For the RV system, The generator ensures stable power supply to the starter battery, and uses the extra power of the starter battery to supply power to the house battery. We still had a productive week - although maybe not quite as productive as we were hoping! 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. Since we had plans to head down to Arizona in late April 2020, I hit up Eddie Glonek of Mobile Homestead Solar Services to see if he was available to do this install for us. When the ignition turns on, it signals your charger that the alternator has engaged, which turns on the charger itself. With RJ45 communication port featured, you can unlock monitoring features exclusively using the BT-2 Bluetooth Moduleand Renogy DC Home App, control and monitor the device remotely through your phone in real time. Eddie added some scrap wood and drilled it to the floor of the camper, right next to the Inverter. The D+ ignition cable can be purchased at the local store or online, it suits both D+ and LC terminals. Renogy's DC to DC MPPT on-board Battery Charger is designed to give you options! Anybody got an idea? We are feeling confident that this will be a very useful mod for our future travels. When connected with two batteries, it is vital to be able to isolate the two start and service batteries for charging safety. Biases to solar power when it is available. Pass the two #4 wires through the floor of the camper into the battery compartment. Is it necessary? Disconnect the main battery - This wasn't so easy, there is a small (5\" x 5\") plastic cover to the right of the accelerator pedal, pull it from the top and then pull up hard, its not easy bu t it comes off. Step 4 : look for a path to run the single positive #4 cable from the engine compartment all the way back to the tail of the Truck. 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. This Renogy DC-DC On-Board Battery Charger with MPPT is compatible with both traditional and smart alternators. They were just totally overwhelmed, trying their best to have their techs work remote and adapt to the Pandemic workflow. The Renogy hides the input cables and uses posts to connect the ca. This is a good quality hose, very pliable and wide. How to choose a suitable battery charger? On the negative, only the two negative marker wires where cut, as well as the negative tiny wire to the TPMS. We had several days of heavy cloud cover, mist and steady rain while staying at Hartman Rocks near Gunnison, CO. Please note the temperature sensor is not included and it cannot use with Lithium batteries. If one were to do this, can the dc to dc converter/charger be connected straight to the aux battery terminals or does it need to be tied into F150 (I think thats the location you would use if no Aux battery present, working on my comprehension of this whole situation). See photo 2.3. 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. 480 watts solar, more than will fit on your small compact roof. Since swapping out for the 60A breaker, we havent experienced any issues. Do not reverse the polarity since the reverse polarity of the battery connections can cause injury and damage to the device. 3. Eddie then connected the DC positive wire from the green terminal left connector, to a test DC positive on our batteries and. 1. Haven't observed any overheating issues, but may add a 12v computer fan to help shift some air across the rear just in case. 2. 18-16AWG copper cable recommended. Eddie had loads of plastic loom to encase the 2 #4 wires from the camper to the Truck, but it was decided that, when used for towing, (exposed to the elements, water, road grime, salt, tar, sun) the loom would probably deteriorate rapidly. SUCCESS ! Renogy is a well-known manufacturer of power systems. 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. I use a small fan to help it stop overheating. If you have any questions regarding this product, please, More questions about your off-grid power system? step 14 : Well, our travel plans were such that we had to get on the road, even though this install wasnt done. Bonus points : he is friends with Ray at Love Your RV, so we knew we could hit up Ray if we hit any technical issues or roadblocks during the install. Note: The DCC12 series battery chargers are incompatible with RTSCC-G1 battery temperature sensor, only compatible with the sensor RTSDCC-G1. Please allow up to 1 to 2 business days for processing and 3 to 5 business days for shipping. Eddie suggested giving the cables a good lube with dishwashing soap, so the fat rubber cables would slip nicely through the hose. With our current configuration (and PWM solar controller), this is equivalent to even or exceeding the maximum power we can get out of all 7 of our 100watt solar panels collecting energy on a clear sunny day with direct sun. step 16 : OK, so now that we knew that we were missing Trailer Frame Ground in this whole setups circuit, all we needed to do was get Trailer Frame Ground into the input side of the DC-DC Charger unit. This took way longer than I had hoped, mainly because I had never used a hammer crimper before. update 6/12/2020 : sure wish I had found this guys blog sooner ! 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 Below is a proud Eddie, and his new Load side Anderson connector. The Renogy DC-DC Battery Charger with unique dual charging options. Featured with Remote Temperature Sensor Port, the Voyager can measure the temperature at the battery in real-time and uses this data for very accurate temperature compensation for both too high or low battery temperature, and thus adjust charging voltage to assure stable and constant charging to the battery. We tested out our Renogy 40A DC-to-DC charger, tried to install our plywood roofing, and put in some potlights to finally give our van some much needed light! 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. The D+ Ignition cable is capable of identifying whether the generator is started, to prevent over-discharge of the starting battery and protect the generator. BUT (heres the issue) after 30 secs or so the Renogy starts turning on and off (internal protection?) With this in mind, the NLDC-40 features a 600W MPPT solar regulator, unlike the NLDC-25's 375W MPPT. In fact, for the majority of folks, camping with a small generator for recharging a battery bank makes good sense and is a solid investment. To be fairthe diagrams, troubleshooting in the Renogy instructions for the DC-DC Charger arereally, really vague, super-specific to drivable RVs only, and in general just kind of suck. I needed a reliable DC to DC charger with solar input which had a maximum battery input of 50 amps. With Pandemic shipping times, I didnt want to wait too long and had it shipped to a future destination a few days into our future itinerary. With RJ45 communication port featured, you can unlock monitoring features exclusively using theBT-2 Bluetooth Moduleand Renogy DC Home App, control and monitor the device remotely through your phone in real time. Note: Our product department found that there are some errors in the paper manual attached to the battery charger sold before March , and now the manual on the website has been updated. This diagram shows the whole connection of the DC-DC On-Board Battery Charger. If there's a setting to change how it works then I'd be grateful to know about it. If Renogy added this already, or adjusted the charging algorithm to accommodate such scenario (low PV power) it would be perfect. Well post some feedback once we use it ! Naturally, we needed the 40amp DC-DC charger. output voltage drops to low, around 12.5 volts, the Renogy unit will stop charging the "house" battery. Step 7: mount the breaker to the Truck compartment, and pull the new #4 wire for connection to the breaker. Question about the 7 pin. 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. The Renogy is $130 less. Please note the LC cable is not included. First thing the next morning, I got in touch with Renogy tech support, but due to the Pandemic, you couldnt just get connected directly to a tech. 3. Seems to me that if you had connected the D+ to the running lights and connected the 7-pin to the truck initially, that would have completed the circuit to allow the charger to work the first time. 4. Charger then connects to two 12V 35aH solar AGM batteries from harbor . I solved this problem by installing a switch to isolate the solar when driving and in this way the alternator side produces and charges at 50 amps. I also test out using an old Bogart SC2030 solar charge controller I have laying around for alternator charging. Please allow up to 1 to 2 business days for processing and 3 to 5 business days for shipping. Is it necessary to connect? Considering which equipment to buy I downloaded instruction manuals from various manufacturers and found Renogy was the most straightforward to understand so I bought from them an ac-dc charger, a lithium battery, the dc-dc DCC50S with a BT2 and a 1000w inverter. We looked at the instructions a few more times, even searched for a more recently updated version of the instructions as a pdf (in case ours were out of date). While your vehicle's alternator prioritizes your starting battery, this unit will allow your solar system to charge your service battery first! Probably when youre towing, the truck battery voltage is higher hence its not happening. Connecting to the DC+ lug for a light power source that is only powered when the engine is running. A charger like the Renogy 12v DC To DC On-Board Charger is a great vehicle charging solution. Meaning your panel array can be much larger when using the NLDC-40. 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