step 14 : Well, our travel plans were such that we had to get on the road, even though this install wasnt done. The key components of a solar van installation are: Solar panels: Solar panels come in two main types: monocrystalline and polycrystalline. These six charging voltages meet the requirements of lithium batteries and lead-acid batteries in order to provide more charging options. One note is that you will need to run a wire from the charger to your vehicle's ignition circuit. See photo 5.8. I had our grey water hose, which I was willing to chop, knowing I could replace, re-cap when we got back to town. These six charging voltages meet the requirements of lithium batteries and lead-acid batteries in order to provide more charging options. Disconnect the two wiring harness connectors under the driver seat, one is white and one is yellow. 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. Compatible with a multitude of alternator types, the DC-DC battery charger offers correct charging for AGM, Flooded, Gel, and Lithium batteries. 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 # 1. Key Features It came with a positive / negative alligator clip that you can just connect to your battery. Check out our inital tests on how to run the Camper on 30amp service from the truck and how to recharge our batteries. For battery settings please refer to the Manual Book on page 12&15. Its a great MPPT Solar controller/DC to DC battery charger. Required fields are marked *. 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. Is it necessary to connect? They take the voltage and current of the input and transform it to a usable voltage/current for the output. hi Brian, probably no big deal to leave the 7 pin wired for trickle charge. If you have any questions regarding this product, please submit a case ! 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). 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. 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. 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. We have room in our battery compartment for another battery, so this would be an easy modification. For RV solar panel installation with limited space, we'd recommend going with monocrystalline panels for the most bang for your buck. 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 was puzzling to me, since it would seem that a 40amp DC charger wouldnt draw more than 40amps. This multi-stage, multi-input battery charger can charge the house battery from a starter battery linked to the car alternator or by utilizing solar panels connected directly to the unit. Check out Rays video on this subject at this point of the video linke : https://youtu.be/ww_4yhQPGwY?t=643 . 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. Special thanks to Matt for helping us out ! 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? 1. Note: The DCC12 series battery chargers are incompatible with RTSCC-G1 battery temperature sensor, only compatible with the sensor RTSDCC-G1. This wire turns the unit on and off whenever it has DC positive. Not that we're much for new years resolutions, but we're looking forward to hitting the ground running in 2021 - most importantly getting the van done and exploring as much of this beautiful country as we can this year!Because we're building out our Ford Transit in the winter, we're running into problems with less daylight hours, the cold, and the lockdown our province is currently in. This charger was chosen for price and capability. 1. 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. 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. Step 7: mount the breaker to the Truck compartment, and pull the new #4 wire for connection to the breaker. A RedArc 1240D can do 40 Amps. This implies that various levels are employed while the battery charges. That seems to happen regularly on newer alts., so you need the signal wire attached to the D+ wire of the alt. Renogy is a well-known manufacturer of power systems. Well minor issue on a recent trip when we finally really tested this setup. What is a DC-DC charger? 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. 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. 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 types of battery does the charger support? You can get a decent 2000 watt generator for about $700-900. Links to all products Cahn uses below. 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. Attach connector plug to the tailgate of the Truck. step 13 : old lucky 13 ! Please note the LC cable is not included. - They are easy to mount and secure, ideal for off-grid, on-grid, and . A DC to DC Charger is designed to charge secondary batteries while driving using the primary battery connected to the alternator. Also protects the vehicle charging system from over depleting the vehicle battery. Did you leave the charging cable on the 7 pin wired up or did you remove it? 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. 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. Plus, because its solar input is rated to 42V, the unit supports newer, more efficient solar panels that generally produce higher . For boats, the DC to DC charger will be plugged into a dockside outlet for use when the boat is in port. For even more flexibility, we added a portable 100 watt panel in the fall of 2018. However, I did find that not supplying the BVS which is required but supplying the ignition detection wire that isnt was odd. Please allow up to 1 to 2 business days for processing and 3 to 5 business days for shipping. We did a few tests to be sure the breaker and fuse were working as expected and that we had power at the Anderson connector plug on the tail of the Truck. Installing your own DC-DC Charger at home is actually incredibly simple when you follow this easy step-by-step guide! 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. Special thanks to the hard work of Eddie Glonek of Mobile Homestead Solar Services as usual. Hey guys, so I've been meaning to figure out how to properly have my alternator charge my house batteries. 480 watts solar, more than will fit on your small compact roof. Remove the closed cell foam dust cover.6. My connections were not up to Eddie standards, but, the connections are solid, and I was able to cover all my mistakes up with heat shrink tubing, so hopefully Eddie wont laugh too hard at me next time he sees my work. The charger is overheating in Scotland in Mid winter and where the charger sits its about 15c and it has plenty of air. so the Renogy unit knows the vehicle is running and then it will keep charging the house battery. 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. It is able to charge: Flooded, Gel, AGM, and Lithium batteries using multi-stage charging. An external fuse is required for installation. That would make a nice durable coating/covering for the 2 #4 wires. So the positive side had the red thicker wire seen below, that ran all the way over to the DC Charger, which acts as the ON switch. 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%. Get about 46A (40 from DC-DC and 6A from 7-pin. High-quality DC-DC chargers are three-stage chargers. DC-DC are used in 2 x battery systems where the starter battery charges the house battery to 100% in vehicles or boats. in Redstone, Colorado.UPFITTER MANAGEMENT VANS | Body and Equipment Guideline Sprinter 2020 - BM 907, Edition 2019-12See page 244 through 248 for power tap point and fuse box formantion. Also it seems like not alot of folks have the power and heated seats so there wasn't much info on wiring bit. Connecting to the DC+ lug for a light power source that is only powered when the engine is running. welcome to our little blog. Easily install the compact yet sturdy DC-DC battery charger on RV's, commercial vehicles, boats, yachts, and many more applications! High-Powered 550W Monocrystalline Solar Panel . Connect the - to a factory ground point under the drivers seat. 1. I give it 5 stars because I have fixed all the faults apart from the short terminal bolts, but TBH I shouldn't have to fix any! Nowadays, they are getting cheaper and more reliable. Offers Over-voltage Protection, Over-temperature Protection, and Reverse Polarity Protection to ensure the operation safety. 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. Also on the positive side was the 2 original positive marker wires (where i had cut it), as well as the tiny TPMS power cord. SUCCESS ! A DC-DC charger is, by its nature, going to limit how many amps it tries to pull from the source. So added a 60A rated relay to cut off the PV input, controlled by the D+ (engine on) feed on my Sprinter W906, so can charge LiFePO4 batteries at 50A from ALT input (need appropriately sized cable from starter battery) when the engine is running. step 11 : slippery silliness ! As I mentioned if its a 40 amp charger ampacity doubles. Eddie suggested giving the cables a good lube with dishwashing soap, so the fat rubber cables would slip nicely through the hose. 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. UPDATE Feb 27th, 2020 - I decided to buy myself a Renogy DC-DC charger meant for the task. This side of the DC Charger is the outgoing power, which connects to the camper batteries. The VSR also ensures reliable isolation between the starting battery and service battery, avoiding charging interference. 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 DC-DC battery charger is installed between the starter battery and the house battery. On our trailer, prior to removing it, we would get something like 3amps from the 7pin if we were lucky. Luckily Eddie had a fancy pneumatic ring crimper, perfect for this #4 wire size. 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). 3. 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. Lift off the seat, its heavy, I just sat it on a crate positioned between the two seats.5. Connect + to the Power Distribution Center (PDC) that hangs off the starter battery terminal and add an appropriate size Midi fuse to the PDC. I had to swivel the seat base in order to get a socket onto the back two bolts. Similar to the 7pin connector on a travel trailer or 5th wheel (that runs the camper running lights, brake controllers, and actually can send a little bit of dc power to your camper, but mainly for trickle charging at a low amperage), the idea is to run another high-amp connection from the tow vehicle (on an additional / separate cable to the 7pin towing cable) which is capable of delivering much more power directly to a DC charger which is connected directly to the house batteries of the camper. fantastic item chargers leisure batteries and the starting battery also i have the blue tooth module to view the status, wish id bought this at the beginning of my build ,its excellent ,chargers leisure batteries and then the starter battery ,its also worth getting the BT module so you can see the specs while charging via solar, excellent item does flow back to starting battery when leisure batteries full , easy to fit and understand instructions , doesnt come with a bt module i suggest you order one , ideal to plug solar into as this does it all. 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), SBPVW (Self build panel vans with windows) on Mar 23rd 2021, 12V 20A DC to DC On-Board Battery Charger, DCC50S 12V 50A DC-DC On-Board Battery Charger with MPPT(New Version), 12V 40A DC to DC On-Board Battery Charger, 12V 60A DC to DC On-Board Battery Charger, 12V 100Ah Lithium Iron Phosphate Battery w/ Bluetooth, RBC3050D1S Fuse Installation Instructions, Monitoring Screen for DC-DC MPPT Battery Charger Series manual, Alternator Input Voltage : Traditional Alternator: 13.2-16VDC Smart Alternator (Euro 6): 12-16VDC, Operating Temperature Range : -31F~149F / -35C~65C, Dimensions : 9.6 x 5.7 x 3.0 in / 244 x145 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. update : In October 2020 we added yet another 275 watts for solar, as well as another 100ah Battleborn battery for a total of 300ah. Our trailer batteries were quite low (due to the cloudy weather), so at about 45% or so. 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. Join Date: Aug 2020. . Luckily Eddie had access to a fish wire, which easily passed through the channel. Please note the D+ Ignition Cable is not included. 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. Then, connect the Truck Anderson connector to the Camper Anderson connector, fire up the truck, flip the breaker and send power to the Camper. While your vehicle's alternator prioritizes your starting battery, this unit will allow your solar system to charge your service battery first! 18-16AWG copper cable recommended. here is a closeup of the anderson connector on the tail of the Truck (source) and the trailer side (load) the garden hose connector. 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. 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. I now have to order that part in order of the above item to work more precisely. Im calling Renogy Monday morning but hoping to figure it out sooner than later. 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. If the Alt. Renogy DC-DC Chargers support a variety . 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. Make sure that the entire system is a 12V system, 2. CaptainMitch. Isolating the solar solves the problem. 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). and THERE WAS ! They are available on Amazon as well as directly from Renogy. If the efficiency of the DC charger is 95% then that would need 49.8A @ 11.5V. If you have any questions, please contact us in time. 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. The Renogy is $130 less. 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%. We went with a 40amp model, but they also make them in 20 and 60amp. 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. step 15 : Fast forward a couple of days. This high-quality battery charger has multiple intelligent protections including 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. This means that, all I had to do was run a #4 cable from the shunt, snake it through the existing wiring, and terminate that cable in the back of the DC Charger, on the Input side. See photo 2.3. The DC-DC battery charger is installed between the starter battery and the house battery. With this in mind, the NLDC-40 features a 600W MPPT solar regulator, unlike the NLDC-25's 375W MPPT. I went for a photon universe 200w solar panel since Renogy didnt have a comparable device available. renogy dc to dc battery charger 20a, 40a, 60a Victron has many versions available for 12, 24, and 48 Volts. Step 3 : gather the parts and gear needed for the install. The D+ ignition cable can be purchased at the local store or online, it suits both D+ and LC terminals. This will give maximum battery cell life. She had one priority in regards to energy usage when we were starting our camper journey, which was, above all, she would prefer to not be reliant on using a generator, ever if possible. It's the smart way to keep yourself fully charged and off-grid longer! 4. This is stated in the manual but can easily be overlooked, so the cable and fuse size chart is a good reference point. Step 1 :be sure that we have an alternator in our 2017 Ford F-150 that can handle the extra power that we are trying to send over to the camper. Connecting to the A2 upfitter lug - This is where you can source up to 250 amps of power and is left open for upfitters, this is where i connected my 4 awg wire. SW5 switch is the selection switch for switching between lead-acid batteries and lithium batteries. Renogy Dual Input DC-DC On Board MPPT Battery Charger with its built-in VSR allows vehicle owners to enjoy the benefits of fully charged deep cycle service batteries while reliably isolating it to the engine starting battery with one easy-to-install charging system. See photo 6.9. This diagram shows the whole connection of the DC-DC On-Board Battery Charger. What type of alternator is this on-board battery charger compatible with? 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. 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. Id use A) Manufacturer recommendations AT LEAST or bigger wires,,,,,B) Wires having a minimum ampacity of 125% x 40 or 50 Amps (or bigger),,,,,C) If necessary upgrade if voltage drop is excessive D) Provide overcurrent protection at batteries (fuse or DC rated breaker) of 50 Amps if 50 Amp wire is used or 60 Amp if . What will happen if the service battery is fully charged? Biases to solar power when it is available. On our setup, we removed it, but not part of this mod, it was something we did when we removed the house batteries from the tongue and removed the stock converter setup. Bluetooth Monitoring Ready! 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