While your vehicle's alternator prioritizes your starting battery, this unit will allow your solar system to charge your service battery first! The LC wire can automatically adjust the charging current to prevent excessive charging current from damaging the house battery. I randomly stumbled upon this and I'm glad I did. 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. See photo 4.7. Charger then connects to two 12V 35aH solar AGM batteries from harbor . Step 6 : pull the #4 wire through the frame channel. We checked that we had good current coming in to the input side of the unit, that was working properly. 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. Question: can I use a smaller gauge wire like a an 18 gauge wire instead of a hes y 4 g cable? With this in mind, the NLDC-40 features a 600W MPPT solar regulator, unlike the NLDC-25's 375W MPPT. While your vehicle's alternator prioritizes your starting battery, this unit will allow your solar system to charge your service battery first! Then connect a new short #4 wire from the breaker to the terminal fuse on the positive terminal on the Truck battery. Install is pretty simple. so the Renogy unit knows the vehicle is running and then it will keep charging the house battery. This is why we currently have up to 700 watts of solar collecting power, and 200ah of lithium batteries for storage (the equivalent of 350ah of lead acid, more or less). I see no need for an additional large ground cable. Offers Over-voltage Protection, Over-temperature Protection, and Reverse Polarity Protection to ensure the operation safety. How do I set the battery since there is no display screen? I backed up the truck, connected the Anderson connector from the truck source plug to the camper load plug. 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. Biases to solar power when it is available. 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. On the negative, only the two negative marker wires where cut, as well as the negative tiny wire to the TPMS. 18-16AWG copper cable recommended. I appreciate Eddie explaining ( a few times ) , the exact steps Id need to do to finish this one on my own. Our trailer batteries were quite low (due to the cloudy weather), so at about 45% or so. The charger will overheat and go into error 6 mode when driving using the alternator. Click here for prices on amazon.com victron orion tr smart dc to dc battery charger Get Started With Off-Grid Solar Power Eddie then zip tied down the original positive rubber boot cover jus to keep everything snug and tight on the battery terminal. and.. As you can see, the green light above the dip switch was on, indicating the DC unit was charging the batteries, and below, in my TM-2030 Wifi output to the Battery Monitor, it was showing 40amps coming in from the truck, into our camper batteries !! And with multi-stage charging and multi-chemistry functionality, Renogy's DC to DC MPPT Charger has you covered whether you're using Flooded,Gel,AGM, orLithium batteries. Following that install, weadded another 200 watts in april 2018. Renogy you need to have active cooling like a small inbuilt fan to fix the overheating? Links to all products Cahn uses below. Isolating the solar solves the problem. Thanks for the update. This system works very well for our needs, but has one major weakness : lack of sun. What is its purpose? This is clearly not a problem when you're parked (not running your engine) or driving at night - no solar. 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.). 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. This side of the DC Charger is the Incoming power from the hose connector, the two #4 cables that run out of the camper, along the frame, and can be connected to the Truck-side Anderson Connector plug. So driving in full sun and an empty battery the best the charger would put in is 32 amps. 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. Key Features 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. Managing and monitoring your energy easily and remotely in any scenario and situation. For additional safety, it isolates the input from the output preventing incorrect voltage transmission. The DC-DC will not power on or operate until the D+ ignition cable is connected. Please note the D+ Ignition Cable is not included. Easy to install and well made. Very happy so far. 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+). Charger Bob L on Jun 23rd 2022 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). 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. Remove the (4) seat bolts at each corner of the base of the seat. However, these batteries cost about $900 each ! 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. I will try and ask Eddie if a smaller gauge wire would work. This controller supports Gel, AGM, Flooded, and Lithium battery, but please make sure to set the correct battery type once it is installed. 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. Renogy 30A DC2DC Charger with MPPT - DCC30S 12V 30A DC to DC Battery Charger with MPPT; Bluetooth Module for the charger - BT-2 Bluetooth Module for Renogy Products w/ RS485 Port; 500A Battery Monitor - Renogy 500A Battery Monitor with Shunt; 100A Smart Battery Protect - Smart BatteryProtect - Victron Energy The DC-DC will not power on or operate until the D+ ignition cable is connected. You can get a decent 2000 watt generator for about $700-900. 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. 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. 3. Exclusively available with the BT-2 Bluetooth Module accessory and Renogy DC Home App available on the IOS and Google Play Stores, you can monitor this device remotely and simply through your phone and stay constantly updated. To our surprise, upon arrival in Green River, after charging for only 1 hour, our 200ah battery was charged from 54% to 100% ! 1. This charger was chosen for price and capability. They were just totally overwhelmed, trying their best to have their techs work remote and adapt to the Pandemic workflow. 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. Get about 46A (40 from DC-DC and 6A from 7-pin. Special thanks to the hard work of Eddie Glonek of Mobile Homestead Solar Services as usual. This can be configured to do just that. Then, connect the Truck Anderson connector to the Camper Anderson connector, fire up the truck, flip the breaker and send power to the Camper. The DC-DC battery charger isolates the input and output to prevent voltage transmission errors and interfere with house battery charging. 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). Due to afternoon shade and an AC-power heavy dinner (toaster oven, microwave) and heavy use of the 3 DC fans in the camper (it was 93F), we brought our Battle Born batteries down to 54% after morning coffee and a toasted bagel. This is a great piece of kit that is very easy to wire up. Easily install the compact yet sturdy DC-DC battery charger on RV's, commercial vehicles, boats, yachts, and many more applications! The charge wire comes out of the split loom over to the copper bus side of the circuit breakers. If you have any questions regarding this product, please submit a case ! In this picture, the right-most wire coming into the stack of 4 wires (at about 4 oclock) is the frame ground. DC-DC Chargers are essential components for properly charging and maintaining your second battery bank in your dual battery bank system. And now it was time for a test. 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. Well post some feedback once we use it ! 5. This wire will handle up to 45A and reasonably hot temps inside the engine bay. 1. 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. 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