I see no need for an additional large ground cable. 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. It came with a positive / negative alligator clip that you can just connect to your battery. Thanks for the update. If you have any questions regarding this product, please, More questions about your off-grid power system? 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. Hey guys, so I've been meaning to figure out how to properly have my alternator charge my house batteries. I am trying to see if it ok to have the 7 pin doing the trickle charge and using the DC to DC at the same time. Click here for prices on amazon.com victron orion tr smart dc to dc battery charger Get Started With Off-Grid Solar Power Please note the temperature sensor is not included and it cannot use with Lithium batteries. Installing your own DC-DC Charger at home is actually incredibly simple when you follow this easy step-by-step guide! Luckily Eddie had access to a fish wire, which easily passed through the channel. I have dealt with Renogy Customer Service in the past, and they were very responsive. 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. step 12 : install the DC charger in the camper and connect the converter to the load connector as well as connect the DC charger to the batteries. 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. 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. Renogy 20A 12V DC to DC On-Board Battery Charger is designed to charge secondary batteries while driving using the primary battery connected to the alternator. Haven't observed any overheating issues, but may add a 12v computer fan to help shift some air across the rear just in case. 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. Renogy DC-DC On-Board Battery Charger has multiple intelligent protections includes battery isolation, over-voltage protection, battery temperature protection, over-current protection, overheat protection, reverse current protection, solar panel and alternator reverse polarity protection, guaranteeing charging safety and protecting your batteries. 12V 40A DC to DC Battery Charger w/o Solar Input. 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. (each 100 watt panel can push about 5-6amps of 12 volt power). 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%. Please note the D+ Ignition Cable is not included. 1. This diagram shows the whole connection of the DC-DC On-Board Battery Charger. This diagram shows the whole connection of the DC-DC On-Board Battery Charger. Installing a Renogy 12V 40amp DC to DC Battery Charger on a Travel Trailer. A DC-DC charger is, by its nature, going to limit how many amps it tries to pull from the source. We went with a 40amp model, but they also make them in 20 and 60amp. Charger then connects to two 12V 35aH solar AGM batteries from harbor . 4. 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. How to choose a suitable battery charger? The LC wire can automatically adjust the charging current to prevent excessive charging current from damaging the house battery. And finally, connect the a DC positive wire to switch ON the converter and see if it works. What is its purpose? 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. 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. 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. Opened up the hood of the truck and flipped the breaker to ON which means we were sending power from the truck battery to the DC Charger. That is, after a few days without consistent sunshine, we have no backup method for recharging our batteries. Thanks. 3. The Renogy also offers trickle charge to the starter battery from the solar if it is required, while the Redarc does not. 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. Eddie added some scrap wood and drilled it to the floor of the camper, right next to the Inverter. 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. 1. One simple way for us to solve this issue would be to just add a third BattleBorn Lithium battery. The VSR also ensures reliable isolation between the starting battery and service battery, avoiding charging interference. We recently reviewed some of their 100-watt, 12-volt solar panels, and we were impressed.So we were eager to find out whether the Renogy DCC50S 12V 50A DC Board Battery Charger meets that standard.. What is a DC-DC charger? 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. 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. 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). As I mentioned if its a 40 amp charger ampacity doubles. Compatible with a multitude of alternator types, the DC-DC battery charger offers correct charging for AGM, Flooded, Gel, and Lithium batteries. What type of alternator is this on-board battery charger compatible with? Those, Lets say your RV batteries are at 13.6V and your truck batteries are a little low, maybe at 12V. 3-phase MPPT Charging Technology 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. This guy Matt at Adventurousway.com has some great info ok on with the show ! Please allow up to 1 to 2 business days for processing and 3 to 5 business days for shipping. Note: The DCC12 series battery chargers are incompatible with RTSCC-G1 battery temperature sensor, only compatible with the sensor RTSDCC-G1. step 9 : terminate the positive and negative #4 wires with the Anderson connector ends, add Anderson plug and rubber boot. Why it does this, the lithium battery will take the full 50 amps until it reaches 14.4 volts. 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. this was something I could handle on my own (with some advice from Eddie, naturally). output voltage drops to low, around 12.5 volts, the Renogy unit will stop charging the "house" battery. Pass the two #4 wires through the floor of the camper into the battery compartment. Also would like an option to dual charge [from PV] both starter battery and leisure battery (eg before leisure battery is full) in case static for some time to keep starter battery topped off, but would need dual charging logic (lead acid vs LiFePO4) so maybe a bit much to ask. Special thanks to Matt for helping us out ! 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. Featuring a 3-stage battery charger and multiple electronic protections, users can feel confident that their batteries are being charged optimally and automatically. Please allow up to 1 to 2 business days for processing and 3 to 5 business days for shipping. 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. 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. 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. 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. SO, I cut an existing wire (green / white shown below), which powers the passenger side front yellow marker light (which now also has 1 of 4 observation cameras on it as well). 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. What is the D+ Ignition cable? 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. Remove the closed cell foam dust cover.6. 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. Its a great MPPT Solar controller/DC to DC battery charger. 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). The issue : after about 5 minutes, the 50amp breaker on the truck would trip. 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. Renogy's 12V DC to DC On-Board Battery Charger 6 Gauge Ring Terminals Heat Shrink Split Loom Flex 201/2" Machine Screws 20 Lock Nuts Rubber Splicing Tape Vinyl Insulation Tape Crimp Tool Step-1 Inspect The Goods Straight out of the box, a quick look at the battery charger reviled a questionable burn mark on the power terminal! - 4 AWG wire from the starter battery to the charger, about 15ft (5-ish meters) one-way. # 1. 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. An external fuse is required for installation. Instead of burning lots of #4 cable to run both a positive and negative, wed just run the positive from the battery, then use the frame as the negative return. I had our grey water hose, which I was willing to chop, knowing I could replace, re-cap when we got back to town. just something to consider. 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