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. Similar to what Ray did, we wanted the install to be set up in a way that we have the option to only turn on the DC-DC Charger when we need it. The Renogy is $130 less. this was something I could handle on my own (with some advice from Eddie, naturally). I was able to return the original DC unit to Amazon, now that I had a second unit directly from Renogy (now that we knew the original unit was not defective). The DC-DC battery charger is capable of identifying whether the generator is started, to prevent over-discharge of the starting battery and protect the generator. Renogy DC to DC Battery Charger InstallRenogy 60A DC to DC Battery ChargerCompatible with a multitude of alternator types, this 60A DC to DC Battery Charger . Be careful not to over-torque the terminals on the DCDC as over-torquing may cause irreparable damage (Do not exceed 16 N-m / 3.3 ft-lb). 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. CE certification. Is it necessary to connect? 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. Renogy 40A DC to DC Battery Charger ; Nominal Voltage: 12V: Rated Charge Current: 40A: Output: 500W: Idle Power Consumption: <0.4A: Input Voltage Range: 8V-16V: . 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. While your vehicle's alternator prioritizes your starting battery, this unit will allow your solar system to charge your service battery first! I anchored these to the wall so there would be no real stress points and tested all connections. It allows me to charge my batteries with proper multi-stage charging by both my alternator AND solar panels. This design method can well prevent the starting battery from being over-discharged during the charging process. 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. The compact and robust design makes it suitable for all conditions. B2B chargers are hands down the best way to charge if you drive regularly IMO. How to choose a suitable battery charger? The battery temperature sensor for DC-to-DC car battery chargers can be purchased at the Renogy store. A DC to DC Charger is designed to charge secondary batteries while driving using the primary battery connected to the alternator. Step 3 : gather the parts and gear needed for the install. And now it was time for a test. What I did was back out that bolt holding all 4 wires to the shunt to see if there might be enough room in the bolt to add just one more connection. 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. Isolating the solar solves the problem. Is it necessary to connect? If you were going to own the van for 10 years, which would you put in? May give you a start on finding it. Its possible that setup would work, but in our case the 7-pin isnt connected to our trailer battery. We thought, how about a section of hose ? Everything was connected up and it just works. This was his first time installing a DC-DC charger in a towable camper, but he was up for it. I wanted something which could be a simple current limited charger for a LFP battery and yet only be on if the alternator was running (D+). So we did just that and changed out our 50A breaker for a 60A breaker. I have also read some strong feelings against Renogy. The idea here would be, in our case, to connect the on/off wire to the running lights of the truck, so that it would only be active if our running lights were on (either 7pin connected to the trailer OR we jump the 7pin with a fuse). Naturally, we needed the 40amp DC-DC charger. This battery charger is compatible with both traditional and smart alternators. See photo 2.3. . 18-16AWG copper cable recommended. 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. This battery charger is compatible with both traditional and smart alternators. 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. 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. In short, Id suggest youre probably better off with a higher rated. The DC-DC battery charger isolates the input and output to prevent voltage transmission errors and interfere with house battery charging. Next look back into this cavity and you'll see the disconnect tap, it has a red button on it, depress the button and pull the plug off the post, its tough to reach but relativity easy to pull off. Stage 1: Boost- this offers the greatest voltage possible when charging a depleted battery. Eddie and I thought it was indeed possible that the specific unit we installed could have been faulty, we had no way of knowing. Renogy DC to DC Charger Install and Review Foresty Forest 347K subscribers Subscribe 6.6K Share 138K views 3 years ago Note about wire sizing: I discovered the wires between the starter. Of course, this step got repeated a few times on the cabling on the Truck and inside the camper, just showing his current method. Filter By Request Wholesale Price REGO 12V 60A DC-DC Battery Charger Compare $499.99 Add to Cart DCC50S 12V 50A DC-DC On-Board Battery Charger with MPPT Compare $269.99 $339.99 The left terminal is for a positive DC wire. 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). Bought a 170 lithium battery from renogy 4 months ago and one major issue shows up every-time. When the ignition turns on, it signals your charger that the alternator has engaged, which turns on the charger itself. See photo 3.4. 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. Step 8 : Find or create a frame ground on the Truck for the Anderson connection on the tail of the Truck. 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. At this point, it was WELL PAST happy hour. We went with a 40amp model, but they also make them in 20 and 60amp. Your email address will not be published. When connecting the charger and the battery, make sure the battery poles are clean when connecting the terminals, select a sufficient cross-section for the connection cable, tighten the nuts and bolts with proper torque as loose connections may cause overheating. 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? Connect the - to a factory ground point under the drivers seat. After flying back home, we were not ready to give up our new lifestyle yet, so we bought a minivan, converted it into a DIY minivan camper, and drove across Canada in search of beautiful campsites and stunning mountains to climb. On-board chargers can be installed easily and used on vehicles such as cars, vans, boats, and more. So driving in full sun and an empty battery the best the charger would put in is 32 amps. The system prioritises solar but in my opinion it would be better if it prioritised the alternator. 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. Please refer to the manual on page 15 for Battery Type LED. Make sure that the entire system is a 12V system, 2. SUCCESS ! The DC-DC battery charger isolates the input and output to prevent voltage transmission errors and interfere with house battery charging. Thanks for the update. SW5 switch is the selection switch for switching between lead-acid batteries and lithium batteries. This is clearly not a problem when you're parked (not running your engine) or driving at night - no solar. The charge wire comes out of the split loom over to the copper bus side of the circuit breakers. See owners manual for more details. The Renogy DC-DC Battery Charger is multi-certified to CE, FCC, and PoHs. Gender: Male. Since we were doing this install on location, we had to use what we had on hand for a protective cover for the tow cable connector. 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. renogy dc to dc battery charger 20a, 40a, 60a Victron has many versions available for 12, 24, and 48 Volts. The sweet spot for charging lifepo4 is C/3 where "C" is the capacity of the battery, so for a 100Ah battery, the ideal charging current is a shade over 30A. Comes with sturdy compact design, this Renogy DC-DC On-Board Battery Charger with MPPT can be safely and easily connected to any 12-volt system and allows safe operation in any position or portable devices without the worry of incorrect connections or sparks. The DC-DC battery charger is installed between the starter battery and the house battery. This Renogy's DC to DC MPPT on-board Battery Charger has a built-in Voltage Sensitive Relay (VSR), thanks to which the charger will Trickle Charge the service battery and maintain its fully charged status, and will also Trickle Charge the starting battery via solar panels. I needed a reliable DC to DC charger with solar input which had a maximum battery input of 50 amps. Much like a Solar Controller, the DC-DC Charger needs to know your battery chemistry as well as the recommended voltage range so that it can properly charge. The Renogy also offers trickle charge to the starter battery from the solar if it is required, while the Redarc does not. This diagram shows the whole connection of the DC-DC On-Board Battery Charger. 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. In Theory. 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). They created a ticket for me and put me in the queue and told me a tech would get back ASAP. 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. This enables the backup battery's charge to be replenished quickly. Step 5 : make a nice ring connector on the engine end of the #4 wire. That is, after a few days without consistent sunshine, we have no backup method for recharging our batteries. What is its purpose? Probably when youre towing, the truck battery voltage is higher hence its not happening. Eddie added some scrap wood and drilled it to the floor of the camper, right next to the Inverter. Just adding another 100ah battery would probably be enough to get us through an extra one to three additional days of no solar. 3-phase MPPT Charging Technology I've only got 125 watt solar panel and the best I ever see is about 7 amps. The key components of a solar van installation are: Solar panels: Solar panels come in two main types: monocrystalline and polycrystalline. 1. Ive only just found the time to instal, which went easily and well, and am yet to finalise the perimeters for the very best set up..but first I need the BVS.. circles upon circles, who knows maybe the ignition wire will come in handy after all. For even more flexibility, we added a portable 100 watt panel in the fall of 2018. For battery settings please refer to the Manual Book on page 12&15. Renogy's DC to DC MPPT on-board Battery Charger is designed to give you options! Please allow up to 1 to 2 business days for processing and 3 to 5 business days for shipping. step 11-b : make the run along the frame with the garden hose (two wire #4 cable) secure with plastic anchors which are bolted into the steel frame. Easily install the compact yet sturdy DC1212 on RVs, commercial vehicles, boats, yachts and many more applications! I know for sure the 4g worked just fine, so Id just go with that. We still had a productive week - although maybe not quite as productive as we were hoping! 4. Ive hooked up my 40A Renogy DC-DC with input from TV with 4ga Anderson connector and output to my 280Ah LiFePO4. Renogy's DC to DC MPPT on-board Battery Charger is designed to give you options! Step 6 : pull the #4 wire through the frame channel. Winnebago Camper. This was puzzling to me, since it would seem that a 40amp DC charger wouldnt draw more than 40amps. Haven't observed any overheating issues, but may add a 12v computer fan to help shift some air across the rear just in case. 3. Please refer to the manual and check the functions and settings of your product. 480 watts solar, more than will fit on your small compact roof. Also note, I increased the breaker amps in a subsequent edit to this post. We had the opportunity to test our setup yesterday. If the efficiency of the DC charger is 95% then that would need 49.8A @ 11.5V. 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. I use a solar cut off switch to gain the full power when driving, this is causing an overheating issue and is the same when the solar has turned itself off when dark. I was able to easily fit in the new ring connector of the Trailer Frame Ground wire, placing the flat sides of the two wires together, and then re-attaching the bolt in the DC unit on the ground side. 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 . What will happen if the service battery is fully charged? 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. 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. 3. Eddie recommended the following gear, which we mostly bought from Northern Arizona Wind and Sun (highly recommended retailer!) There is possibly some extra demand and wear that this will put on your alternator, especially if used when not driving. 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! 2. This Renogy DC-DC On-Board Battery Charger with MPPT is compatible with both traditional and smart alternators. Luckily Eddie had access to a fish wire, which easily passed through the channel. Luckily Eddie had a fancy pneumatic ring crimper, perfect for this #4 wire size. I appreciate Eddie explaining ( a few times ) , the exact steps Id need to do to finish this one on my own. This charger was chosen for price and capability. Pretty good in theory, but it was much much harder to accomplish the cable pull through the hose. What is the D+ Ignition cable? Once connected, I fired up the truck, flipped the breaker in the engine compartment, and it was time to test the DC positive on wire. 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. This Renogy DC-DC battery charger is compatible with traditional and smart alternators. 5. 3. Meaning your panel array can be much larger when using the NLDC-40. The DC-DC will not power on or operate until the D+ ignition cable is connected. Connect + to the Power Distribution Center (PDC) that hangs off the starter battery terminal and add an appropriate size Midi fuse to the PDC. 4. Do not reverse the polarity since the reverse polarity of the battery connections can cause injury and damage to the device. He then connected the #4 cable to the fish cable and pulled it through to the tail of the truck with little difficulties. With multi-stage charging and multi-chemistry 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. Question about the 7 pin. Compatible with a multitude of alternator types, the DCC12 offers correct charging for AGM, Flooded, Gel, and even Lithium deep cycle batteries! The idea is, the alternator on the your tow vehicle (or in the case of a van, or drivable RV) creates extra surplus power that can be used charge the house batteries of the camper. We were headed from Green River to Moab, UT which is about a 1 hr drive. I now have to order that part in order of the above item to work more precisely. 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. Renogy you need to have active cooling like a small inbuilt fan to fix the overheating? Renogy is a well-known manufacturer of power systems. 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). One note is that you will need to run a wire from the charger to your vehicle's ignition circuit. 2. Luckily, there was an existing ground which Eddie could re-use, right under the tail. 18-16AWG copper cable recommended. UPDATE Feb 27th, 2020 - I decided to buy myself a Renogy DC-DC charger meant for the task. DCC50S 12V 50A DC-DC On-Board Battery Charger with MPPT(New Version). The DCC12 Series battery chargers are the most effective way to charge your auxiliary or house batteries from the alternator/starter battery. 3. Option: Monitoring Screen for DC-DC MPPT Battery Charger Series. If you have any questions regarding this product, pleasesubmit a case. The D+ Ignition cable is a design method used to identify whether the generator is started. I located an upfitter manual on the Mercedes site ( https://www.upfitterportal.com/en-us/files/en-us/beg/my20/sprinter.pdf), it required an email in order to download, so don't let that stop you if you can't download it without providing an email. Because that ground wasnt available, the unit just wouldnt turn on. That seems to happen regularly on newer alts., so you need the signal wire attached to the D+ wire of the alt. I had seen Ray over at Love Your RV do this upgrade on his 5th wheel, so we were hoping to do the same. The LC wire can automatically adjust the charging current to prevent excessive charging current from damaging the house battery. 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. The DC-DC Battery Chargers are the most effective way to charge your house batteries from the starter battery. yowza. Our truck has a 215amp alternator, and according to Renogys Customer Service Techs, that is more than enough power to run even the 60ah DC-DC charger. My search stopped at the Renogy with the DCC50S, not Australian made but, because it was precisely what I wanted and at a sub $350 price (at the time). step 15 : Fast forward a couple of days. This implies that various levels are employed while the battery charges. 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). 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. CE certification. Hey guys, so I've been meaning to figure out how to properly have my alternator charge my house batteries. And we decided to just shut it all down and have a well deserved adult beverage or two and catch the remaining bits of Arizona sunset. If you have any questions regarding this product, pleasesubmit a case. step 10 : connect the long #4 wire from the tail of the truck to the breaker in the engine compartment. Please note the temperature sensor is not included and it cannot use with Lithium batteries. To get 40A @ 13.6V (544W) youd need 47.3A @ 11.5V. I have a couple of installation questions about my Renogy 40amp DC DC charger with 2 200AH Lithium Batteries (ampere time) Question 1: So I have seen were folks put in a switch that sees 12V and turn it to the on position to enable the DC/DC and turn it off when they dont want to pull from the tow vehicle. 3-phase MPPT Charging Technology hi Brian, probably no big deal to leave the 7 pin wired for trickle charge. Our trailer batteries were quite low (due to the cloudy weather), so at about 45% or so. 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. Hello, thanks for the excellent post on adding a grounding cable from the (-) input of the DC DC Charger to the trailer frame ground wire. 2. Considering this when calculating cable sizes will avoid voltage drop and overheating complications. The Renogy hides the input cables and uses posts to connect the ca. Removable side covers avoid contact between product terminals and the human body during transportation and daily use, which results in electrostatic damage, ensuring product stability and safety. The DC-DC battery charger adopts the design of the DIP switch and it provides 6 charging voltage settings through five gears. step 13 : old lucky 13 ! I also test out using an old Bogart SC2030 solar charge controller I have laying around for alternator charging. 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. This controller supports Gel, AGM, Flooded, and Lithium battery, but please make sure to set the correct battery type once it is installed. If you have any questions regarding this product, please submit a case. This Renogy DC-DC battery charger is compatible with traditional and smart alternators. While your vehicle's alternator prioritizes your starting battery, this unit will allow your solar system to charge your service battery first! Eddie suggested giving the cables a good lube with dishwashing soap, so the fat rubber cables would slip nicely through the hose. 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