Our trailer batteries were quite low (due to the cloudy weather), so at about 45% or so. For boats, the DC to DC charger will be plugged into a dockside outlet for use when the boat is in port. What type of alternator is this on-board battery charger compatible with? Very happy so far. 3. Featuring a 3-stage battery charger and multiple electronic protections, owners can feel confident that their batteries are being charged optimally and automatically. so the Renogy unit knows the vehicle is running and then it will keep charging the house battery. Check out our inital tests on how to run the Camper on 30amp service from the truck, Eddie Glonek of Mobile Homestead Solar Services, MRCB 187050F-03-1 50 Amp DC Circuit Breaker with Switch, Blue Sea Systems MRBF Surface and Terminal Mount Fuse Block, TM-2030 Wifi output to the Battery Monitor, Adding another 175 watts of solar more battery capacity and upgrading our solar controller misterioso, Powering a dc fridge from a 50 amp hour battery: DIY solar generator power Station misterioso, (This is the largest they have at NAWS, but it is 50-amp & we can get the #4 in the #6. It is able to charge: Flooded, Gel, AGM, and Lithium batteries using multi-stage charging. So driving in full sun and an empty battery the best the charger would put in is 32 amps. And finally, connect the a DC positive wire to switch ON the converter and see if it works. 1. 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. SW5 switch is the selection switch for switching between lead-acid batteries and lithium batteries. This battery charger is compatible with both traditional and smart alternators. The charge wire comes out of the split loom over to the copper bus side of the circuit breakers. 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. 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. 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. Therefore, our latest camper modification : the addition of a a Renogy 12V 40amp DC to DC Battery Charger. It's the smart way to keep yourself fully charged and off-grid longer! 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. This system works very well for our needs, but has one major weakness : lack of sun. SUCCESS ! This Renogy DC-DC battery charger is compatible with traditional and smart alternators. However, these batteries cost about $900 each ! 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. 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. See photo 2.3. Attach connector plug to the tailgate of the Truck. See owners manual for more details. So we did just that and changed out our 50A breaker for a 60A breaker. 12V 20A DC to DC On-Board Battery Charger. 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. Charger then connects to two 12V 35aH solar AGM batteries from harbor . 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. I went for a photon universe 200w solar panel since Renogy didnt have a comparable device available. 1. 4. Just adding another 100ah battery would probably be enough to get us through an extra one to three additional days of no solar. 5. The VSR also ensures reliable isolation between the starting battery and service battery, avoiding charging interference. They take the voltage and current of the input and transform it to a usable voltage/current for the output. 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. In Theory. The key components of a solar van installation are: Solar panels: Solar panels come in two main types: monocrystalline and polycrystalline. But in the UK, PV output isn't great. 3. Eddie and I thought it was indeed possible that the specific unit we installed could have been faulty, we had no way of knowing. Disconnect the two wiring harness connectors under the driver seat, one is white and one is yellow. 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. Renogy's DC to DC MPPT on-board Battery Charger is designed to give you options! 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. The DC-DC will not power on or operate until the D+ ignition cable is connected. 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. 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. 1. A typical installation of a DC-DC charger. When the BMS wants charge this charger acts as a current limited charger, thus protecting the alternator; when the BMS does not want charge this charger just acts as a voltage regulated power supply. While your vehicle's alternator prioritizes your starting battery, this unit will allow your solar system to charge your service battery first! Remove the (4) seat bolts at each corner of the base of the seat. 1. Isolating the solar solves the problem. What is its purpose? 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). With up to 99% MPPT tracking efficiency and 94% convert efficiency, the charger can fully charge a 1kWh battery within 2 hrs with solar energy. Renogy's DC to DC MPPT on-board Battery Charger is designed to give you options! The DC-DC battery charger isolates the input and output to prevent voltage transmission errors and interfere with house battery charging. 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. 18-16AWG copper cable recommended. 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. Step 5 : make a nice ring connector on the engine end of the #4 wire. Links to all products Cahn uses below. Compatible with a multitude of alternator types, the DC-DC battery charger offers correct charging for AGM, Flooded, Gel, and even Lithium deep cycle batteries! Step 7: mount the breaker to the Truck compartment, and pull the new #4 wire for connection to the breaker. 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. step 13 : old lucky 13 ! The wire gauge is so small (like 12g?) This was his first time installing a DC-DC charger in a towable camper, but he was up for it. High-Powered 550W Monocrystalline Solar Panel . 12V 40A DC to DC On-Board Battery Charger. If you have any questions, please contact us in time. 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. Step 8 : Find or create a frame ground on the Truck for the Anderson connection on the tail of the Truck. 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. However, since standard/traditional alternator has a fixed voltage when charging, while smart alternator has a controlled charging output based on operating conditions, it is required to connect the charger to the smart alternator through the Vehicle Ignition Port by the IGN Signal Wire comes with the package. If you have any questions regarding this product, please, More questions about your off-grid power system? Following that install, weadded another 200 watts in april 2018. How to set the charging voltage value of the charger? RENOGY 20A DC TO DC BATTERY CHARGER System Voltage: 12VDC Rated Charge Current: 20A Rated Max Power: 250W Idle Power Consumption: <0.4A Input Voltage Range: 8V-16V Weight: 3 lbs. Therefore, Eddie asked me to do a quick test : take a jumper cable, and make a direct attachment from the Frame Ground on the trailer (which we have one easy to get to right under the A Frame of the trailer), and then take that same polarity of the jumper cable and attach it to the Frame Ground on the Truck. 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. 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. Please allow up to 1 to 2 business days for processing and 3 to 5 business days for shipping. I mounted the Tire Minder to the cabinet (it had been just floating around on the floor of the battery compartment). 4. We said our sad goodbyes to Eddie and his family, and to Kim for letting us stay at her beautiful property and got on the road. 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