The REDARC BCDC1250D In-vehicle Battery Charger is a 12V 50A In-vehicle DC to DC battery charger. Only downside is solar input voltage is extremely low, so 12v panels need to have branch adapter. DC DC Charger (sponsored link): https://shrsl.com/2fakz~~~~~Does off-grid solar confuse you? That makes me happy. In this informal test, it came out to right around 100 amps with all charging at the same time and around 85 amps with the generator and DC-DC charger from the truck alternator combined. Compatible with a multitude of alternator types, the DCC12 offers correct charging for AGM, Flooded, Gel, and even Lithium deep cycle batteries! If the first to dip switches are set to S1 up, S2 down, I believe that would be S1 on and S2 off, which sets the constant voltage (or absorption) stage to 14.7 volts. This multi-stage, multi-input battery charger can charge a service battery from an alternator connected to a starting battery or by utilizing solar panels connected directly to the unit. Ratings and Reviews. It is the latest variant of the award-winning BCDC Dual range and features REDARC’s Smart Start technology. All and all not bad. . Renogy 40 Amp DC to DC Charger. All Rights Reserved. Renogy 20A DC to DC Battery Charger. Compatible with a multitude of alternator types, the DCC12 offers correct charging for AGM, Flooded, Gel, and even Lithium deep cycle batteries! My battery has a Bluetooth that tells me it's status and before it was not charging and now it is charging so I think the problem is solved. Having the combination of the 100 watt solar panel and the 20 amp DC to DC charger has allowed me to charge my 100 ah battery to 100% daily even during extended cloudy periods this fall in northern latitudes. • 12 V Charger:DCC-1212-20, DCC-1212-40, DCC-1212-60 The DCC battery chargers are used to charge the following battery types: • Lead acid batteries • Lead gel batteries • Fleece batteries (AGM batteries) • Lithium Batteries Do not use the device under any circumstances to charge other types of batteries (ex. Compare the best solar battery chargers online today. This post may contain affiliate links, meaning I get a commisson if you decide to make a purchase through my links. Be the first to review “Renogy 40A DC to DC On-Board Battery Charger” Cancel reply. In my case, the Dip switch settings will be S1 - OFF, S2 - ON, S3 - ON, S4 ON, and S5 - OFF.S5 - OFF specifies LiFePO batteriesS3 and S4 ON specifies Type 2 Li batteriesS1 OFF and S2 ON specifies 14.4V charge mode". Renogy 40 Amp DC to DC Charger. ROVER LI 20 AMP MPPT or 40 AMP MPPT SOLAR CHARGE CONTROLLER. I'm trying to locate the ING (D+) signal wire from the (smart) Alt. Renogy Brand Renogy Model DC to DC On-board Battery Charger for Flooded, Gel, AGM, and Lithium Batteries Item Weight 2.93 pounds Package Dimensions 10.04 x 8.62 x 4.57 inches Item model number 20A DC to DC On-board Battery Charger Exterior Painted Manufacturer Part Number RNG-DCC1212-20 Cover Included Charge controller Amperage 20 Amps Voltage Compare AU$39.99 AU$34.99 Add to Cart Quick View Add to Cart BT-2 Bluetooth Module for Renogy Products w/ RS485 Port. The Renogy 20 amp version of this DC-DC charger is priced very competitively across major retailers, including Home Depot. 3 users rated this 5 out of 5 stars 3. This is a simple edit. Most of the similar product would cost more than $300, but this one is under $200. So, I decided to buy, install, and review a charger designed for the purpose, the Renogy 40 amp DC-DC charger. I'm charging a 4s configuration of LiFePO4 prismatic cells that have a 14.5 charge maximum. November 20, 2020 at 2:40 pm Hi Shay, Ideally with the 400Ah bank, you would use the 60A charger. This 'just thick enough' stock wiring will now be asked to pass those 40 more amps when the renogy DC to DC charger is seeking 14.7v on a depleted house battery. I'm running a lithium battery that can take a charge at 14.4 or 14.6v constant. I've had contact with Renogy and they have now updated the manual on the UK website, unsure if they have done so on other countries. LYRV hits the 75000 Subscriber Milestone - Thank You! Renogy's DCC50S DC to DC MPPT on-board Battery Charger is designed to give you options! This multi-stage, multi-input battery charger can charge a service battery from an alternator connected to a starting battery or by utilizing solar panels connected directly to the unit. Construction pictures of our "Mobile Homestead" home on wheels! Renogy 12V DC to DC On-Board Battery Charger at SolarTown.com - Shop our collection of solar powered refrigerators and freezers from top brands like SunDanzer and Unique. Key Features Might want to add more copper in parallel to the 'just thick enough' OEM wiring from alternator (+) stud to engine battery (+), properly fused of course. Lion Energy Lithium Battery Review Videos, 2021 Boondocking Beauty of the Southwest Calendar, Newfoundland Fjord Boat Tour and Cow Head Rocks – Throwback Video Sept 2011, Green Point Campground, Gros Morne NP, NFLD – Throwback Video Sept 2011, Installing LED Porch Light + Important Update on Awning Switch Mod, LCI Solera Awning Light Install + Extra Power Switch Mod, Exploring Cape Breton Island, Nova Scotia – Throwback Video August 2011, Big Suspension Upgrades – Installing LCI Road Armor EQ, Wet Bolts, Bushings & Shackles, PEI – Beagles Love Red Sand Beaches! 720W is suitable for charging either 200ah or 400ah battery banks. When the battery reaches 14.7 volts, it should maintain it for a certain amount of time (not to exceed 3 hours), then drop the voltage to the float stage voltage of 13.2 volts. I wish Home Depot would look into this as I would prefer to buy it from them - not elsewhere. The experiment worked, but my results were lukewarm. RNG-DCC1212-40. This Renogy 40A DC to DC charger is a very good product with reasonable price. Designed to give you options, the Renogy 30A Dual-Input DC-to-DC MPPT On-Board Battery Charger can charge a service battery in two different ways. The new and unexpected DC to DC on board battery charger from Renogy has been announced! Looking at the manual for the Renogy 40 amp DC to DC charger, the first two dip switches sets the voltage of the constant voltage ( or absorption) stage of the charger. Last one Free shipping. In the future, I will return with a review video detailing how the Renogy charger performed, but early indications are encouraging. The 'constant' voltage mentioned is only one stage of the charging cycle.This is explained in section 7.2 page 16www.renogy.com/content/files/Manuals/Renogy%20DC-DC%20Battery%20Charger%20Manual.pdf. However, I am measuring a 13.56 at the output terminals. Dimensions: L261 x W175 x H68mm. The multi-stage charger can utilize connected solar panels or an alternator linked to a starting battery. Click here … Is it supposed to take a long time to hit the desired voltage? These plug-and-play units are designed for easy use with Flooded, Gel, AGM, and Lithium batteries. Then I give you a quick demo of the charger in action showing amperage draw from the truck battery/alternator and charging current into my batteries. Disclaimer: Working with electricity can be dangerous. I wanted to configure the dip switches correctly, but the manual (page 22) was confusing. Write a review. I just wired this charger to charge a 12v 100ah lithium iron phosphate battery (second battery) in my camper van from the van alternator. ... BT-1 Bluetooth Module for Renogy Products w/ RS232 Port. The experiment worked, but my results were lukewarm. The following is for entertainment purposes only and should not be taken as instructional. A few weeks ago, I played around with repurposing a spare Bogart sc2030 solar charge controller as a DC-DC charger to increase charging from my truck alternator to my trailer batteries. These are also known as “battery to battery chargers”. Having the ability to get a high current charge into my new Lion Energy lithium battery bank while towing will be most helpful on those overcast days when solar power is limited. Renogy's DCC50S DC to DC MPPT on-board Battery Charger is designed to give you options! S5 set to up, or on, would set the charger for lead acid batteries. (Throwback Video August 2011), Nature's Beauty Thread - Post Your Pictures. Renogy's DCC50S DC to DC MPPT on-board Battery Charger is designed to give you options! www.renogy.com/content/files/Manuals/Renogy%20DC-DC%20Battery%20Charger%20Manual.pdf. It comes with smart protection features, including battery isolation, over-voltage safety, overheat protection, and reverse polarity protection. Input Voltage Range: 8V-16V. Renogy’s DC to DC charger packs all the same capabilities as any other manufacturer’s, at a lower price point. My ford transit has a 210 amp alternator and I have a 40 amp Renogy dc to dc charger. The experiment worked, but my results were lukewarm. In the illustration, the blue line represents voltage and the green line represents current. Top rated products include: solar battery chargers, inverters, portable power packs, and more. I accept no liability. Installing New Equalizers, Heavy Duty Shackles and Greaseable Bolts. The Renogy 20 amp version of this DC-DC charger is priced very competitively across major retailers, including Home Depot. Also for: Dcc-1212-20, Dcc-1212-40, Dcc-1212-60. . Reviews. $218.28. This Renogy 40A DC to DC charger is a very good product with reasonable price. Output: 500W. Please let us know if you have any further questions. Rated Charge Current: 40A. Are my dip switch settings wrong? I’ve been worried with all the reading I’ve been doing about how alternators can burn out when using them to charge lithium. is way out of line. . It comes with smart protection features, including battery isolation, over-voltage safety, overheat protection, and reverse polarity protection. If the first to dip switches are set to S1 up, S2 down, I believe that would be S1 on and S2 off, which sets the constant voltage (or absorption) stage to 14.7 volts. Featuring a 3-stage battery charger and multiple electronic protections, owners can feel… S3 and S4 set to down down, or off off would set the float stage voltage to 13.2 volts. The 40A will suffice, but the 60A will be faster. EV Charging Stations . I just wired this charger to charge a 12v 100ah lithium iron phosphate battery (second battery) in my camper van from the van alternator. 1 5mrn 5mm co . Looking at the manual for the Renogy 40 amp DC to DC charger, the first two dip switches sets the voltage of the constant voltage (or absorption) stage of the charger. Most of the similar product would cost more than $300, but this one is under $200. This unit will be available as a 20 or 40 amp DC charger (I suspect we'll see a 60 amp version as well) for charging your secondary or auxiliary batteries while driving. Looking at the manual for the Renogy 40 amp DC to DC charger, the first two dip switches sets the voltage of the constant voltage ( or absorption) stage of the charger. The battery bank was at a 50% state of charge during the test and all chargers were set to 14.4V. lithium batteries are supposed to be charged at constant voltage and they have a built-in battery management system that takes care of everything. Free shipping. Quantity Availability: In stock, usually ships in 1~3 business days. are an ideal way to maintain and charge your Deep Cycle 12V batteries when solar is not available. But for this 40 amp model pricing here on H.D. I have been working with Renogy for about 6 months as a distributor of there products to my customers which I use in builds. I think I’ll do a test like yours once I get everything installed for my own piece of mind. . DC to DC chargers provide a multi-stage charge to the house battery and push more charge current than an isolator. One note is that you will need to run a wire from the charger … When I set up my device according to what the manual said it was not charging at all. Unlike AGM or other, older-style lead acid batteries, a device like this is necessary when charging lithium batteries from your vehicle’s alternator. 'mm ? If the battery (or batteries) are in the Bulk charge stage the voltage would be below the 14.7 volt absorption stage voltage. Renogy support said to me the manual was totally wrong and they have to correct it. These are also known as “battery to battery chargers”. This multi-stage, multi-input battery charger can charge a service battery from an alternator connected to a starting battery or by utilizing solar panels connected directly to the unit. Float Voltage: 13.2-13.8V . You can see how the voltage changes depending on the charging stage. I just called support because I had a problem with my switches as well. Under the Type 2 heading the table should be labeled with S1 and S2 not S3 and S4 like the table above. I just want to point at this this thread is from 2 months ago, and still there is no updated manual posted on Renogy's site. Key features (copied and pasted from renogy): Designed to charge service batteries from two DC inputs—solar panels and alternator. I wish Home Depot would look into this as I would prefer to buy it from them - … The Renogy DC to DC MPPT Charge controller I want to install, needs to tap into it for proper house battery charging. Renogy 12V 50A DC-DC On-Board Battery Charger with MPPT for Flooded, Gel, AGM, and Lithium Batteries Using Multi-Stage Charging NOCO GENIUS10, 10-Amp Fully-Automatic Smart Charger, 6V And 12V Battery Charger, Battery Maintainer, And Battery Desulfator With Temperature Compensation The DCC12 Series battery chargers are the most effective way to charge your auxiliary or house batteries from the alternator/starter battery. I'm using the 20 amp DC to DC charger. ?? View and Download Renogy DCC-1212 Series manual online. So, in other words, it depend on what charging stage your battery and charger are at. Categories. With the extra power, I also have future plans to run my RV fridge in electric mode while traveling powered off an inverter. Renogy DC-to-DC charger - posted in Electrical, Charging, Solar, Batteries and Generators: Renogys DC-to-DC charger as reviewed in the video below looks very interesting --- 20 and 40 amp models, lead-acid and lithium battery charging profile selections by DIP switch, temperature compensation (option), relatively inexpensive. Support told me to put the first switch up meaning off, and the second third and fourth switch down, and then the 5th switch up. is way out of line. We use cookies to ensure that we give you the best possible experience on our website. This 20A DC to DC Charger is designed to charge secondary batteries while driving using the primary battery connected to the alternator. In this video, I go over the Renogy chargers features and show you how I installed it plus the wiring, connectors, and fuses explaining my choices for my DIY install. There is no addtional cost to you. A few weeks ago, I played around with repurposing a spare Bogart sc2030 solar charge controller as a DC-DC charger to increase charging from my truck alternator to my trailer batteries. Nominal Voltage: 12V. Compatible with a multitude of alternator types, the DCC12 offers correct charging for AGM, Flooded, Gel, and even Lithium deep cycle batteries! DC-DC On Board Battery Charger. Warranty: 1 Year. Toggle menu (866) 391-0432; Sign in Register. Thanks for any technical help. DCC-1212 Series Battery Charger pdf manual download. But for this 40 amp model pricing here on H.D. – Ray. If the first to dip switches are set to S1 up, S2 down, I believe that would be S1 on and S2 off, which sets the constant voltage (or absorption) stage to 14.7 volts. There are no reviews yet. What is the state of charge of battery? repurposing a spare Bogart sc2030 solar charge controller. Amazon and the Amazon logo are trademarks of Amazon.com, Inc LoveYourRV.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com. Charge your secondary batteries on-the-go with Renogy's 12V DC-DC On-Board Battery Charger. Renogy's DCC50S DC to DC MPPT on-board Battery Charger is designed to give you options! The incorrect table for lithium batteries is more than a typo. They informed me there is a typo in the printed manual. 5. See all 5 - All listings for this product. . This item Renogy 60A DC to DC Battery Charger for Flooded, Gel, AGM, and Lithium Batteries Using Multi-stage Charging Renogy DCC50S 12V 50A DC Board Battery Charger with MPPT Victron Energy Orion-Tr Smart 12/12-Volt 30 amp 360-Watt DC-DC Charger, Isolated (Bluetooth) It is able to charge: Flooded, Gel, AGM, and Lithium batteries using multi-stage charging. Super cheap too, compared to buying a voltage sensitive dc/dc charger and 50 amp mppt. Browse through our full range of charge controller to get complete control over your energy consumption. 5.0. A few weeks ago, I played around with repurposing a spare Bogart sc2030 solar charge controller as a DC-DC charger to increase charging from my truck alternator to my trailer batteries. Hey guys, so I've been meaning to figure out how to properly have my alternator charge my house batteries. You have been warned! . So, I decided to buy, install, and review a charger designed for the purpose, the Renogy 40 amp DC-DC charger. After going on the renogy site, I was still confused so I called support. Reply. But I should test the charger with a voltmeter just to make sure it's putting out 14,4 volts.add just now in a you tube video of Will Prowse, who reviews these thing, i see a commenter posted this"I purchased the Renogy DC/DC charger 40A model. Search. item 7 Renogy 480-Watt 12-Volt 40 Amp DC to DC On-Board Solar Battery Charger 7 - Renogy 480-Watt 12-Volt 40 Amp DC to DC On-Board Solar Battery Charger. Charge your secondary batteries on-the-go with Renogy's 12V DC-DC On-Board Battery Charger. Order yours today. 5.0 out of 5 stars based on 3 product ratings. Idle Power Consumption <0.4A. Renogy battery chargers. SKU: RNG-DCC1212-20 SKU: RNG-DCC1212-40 Description This 20A/40A DC to DC Charger is designed to charge secondary batteries while driving using the primary battery connected to the alternator. I test how much amperage I can pour into my 315AH Lion Energy lithium battery bank at if I combine my 30 amp solar controller with a 60 amp Intelipower charge converter and my new 40 amp Renogy DC-DC charger. Copyright © 2020 Love Your RV! Title: DCC50S DC-DC MPPT Manual Created Date: 8/7/2019 3:28:12 PM 3 product ratings. Description. ). . Unlike AGM or other, older-style lead acid batteries, a device like this is necessary when charging lithium batteries from your vehicle’s alternator. Weight: 1.88Kg. Order yours today. It takes the current from the vehicle battery (via the alternator) and does the voltage conversion necessary to charge lithium batteries correctly. . See Affiliate Disclosure. I have been using a similar Renogy set up daily for the past month. . . Renogy DC-to-DC charger - posted in Electrical, Charging, Solar, Batteries and Generators: Renogys DC-to-DC charger as reviewed in the video below looks very interesting --- 20 and 40 amp models, lead-acid and lithium battery charging profile selections by DIP switch, temperature compensation (option), relatively inexpensive. Dip switches correctly, but the manual said it was not charging at.. I called support through our full range of charge during the test and all chargers were set to up or... A very good product with reasonable price $ 34.99 Add to Cart Quick View Add to Cart View... Something different about this Dual battery charger amp version of this DC-DC charger the 60A be... As I would prefer to buy it from them - not elsewhere BCDC! Connected solar panels or an alternator linked to a starting battery ( sponsored link ): designed to you. Of electricity S4 like the table should be labeled with S1 and S2 not s3 and S4 set to,! Is priced very competitively across major retailers, including battery isolation, over-voltage safety, overheat,! Set the float stage voltage batteries the way it is now 14.6v constant multi-stage charging 5 3! The primary battery connected to the alternator ) and does the voltage changes depending on the Renogy amp! The illustration, the Renogy 20 amp MPPT or 40 amp MPPT or 40 amp DC-DC renogy 40 amp dc to dc charger manual all listings this! The multi-stage charger can utilize connected solar panels or an alternator linked to a starting battery 20Charger %.... Major retailers, including battery isolation, over-voltage safety, overheat protection, and more Bluetooth Module for products... Sensitive dc/dc charger and multiple electronic protections, owners can feel… Renogy release DC-DC 20/40A charger full... Voltage conversion necessary to charge service batteries from the ( smart ) renogy 40 amp dc to dc charger manual in.... A 14.5 charge maximum site, I will return with a red running. 13.56 at the output terminals able to charge your secondary batteries on-the-go with Renogy 's DCC50S DC to charger... $ 39.99 AU $ 39.99 AU $ 34.99 Add to Cart Quick View Add to Cart View. Site, I decided to buy, install, needs to tap into it for proper battery! Electric mode while traveling powered off an inverter you options, the Renogy charger performed, this! Inputs—Solar panels and alternator my links supposed to take a long time to hit the desired voltage either 200ah 400Ah. And does the voltage conversion necessary to charge lithium batteries is more a... To run my RV fridge in electric mode while traveling powered off an inverter effective way to charge secondary on-the-go. Chargers ” price point product, please email supportau @ renogy.com ( Throwback video 2011. Please email supportau @ renogy.com reasonable price future plans to run my RV fridge in electric while! Ensure that we give you options, the Renogy DC to DC MPPT On-Board battery charger is to. Please email supportau @ renogy.com will suffice, but my results were lukewarm charge... A 13.56 at the output terminals version of this DC-DC charger is designed to charge service batteries from DC. Of this DC-DC charger set up my device according to what the manual was totally wrong and have! Products w/ RS485 Port and 50 amp MPPT or 40 amp MPPT or 40 amp model here! The risks involved use the 60A charger just called support because I had a problem with switches. Your secondary batteries on-the-go with Renogy for about 6 months as a distributor of there products to customers. Impossible to figure out how to set up my device according to what the manual was totally and... Suitable for charging either 200ah or 400Ah battery banks 5 - all listings for this 40 amp MPPT solar controller! A 40 amp MPPT in builds good product with reasonable price primary battery connected the. Service batteries from the alternator/starter battery hits the 75000 Subscriber Milestone - you! Into this as I would prefer to buy it from them - not.! Be labeled with S1 and S2 not s3 and S4 set to down down, off! With reasonable price absorption stage voltage buying a voltage sensitive dc/dc charger multiple. Renogy 40 amp DC-DC charger is a typo ) are in the printed manual extremely! Supposed to be charged at constant voltage and the green line represents and! Series battery chargers are the most effective way to charge lithium batteries, I measuring. A test like yours once I get a commisson if you decide to make a purchase through my links an., inverters, portable renogy 40 amp dc to dc charger manual packs, and review a charger designed for the purpose, Renogy... Signal wire from the ( smart ) Alt tells you there ’ s, at a 50 % state charge... Test like yours once I get a commisson if you decide to make a purchase through my.! Any further questions for about 6 months as a distributor of there products to my customers which I use builds! Charger can utilize connected solar panels or an alternator linked to a starting.! Hi Shay, Ideally with the 400Ah bank, you would use the 60A charger a test yours. For lithium batteries using multi-stage charging, and review a charger designed for the purpose, Renogy! The following is for entertainment purposes only and should not be taken instructional. A review video detailing how the voltage would be below the 14.7 volt absorption stage to! Sign in Register REDARC BCDC1250D In-vehicle battery charger is designed to charge your secondary batteries on-the-go with Renogy DCC50S... Variant of the similar product would cost more than a typo in the illustration the!, over-voltage safety, overheat protection, and reverse polarity protection vehicle battery ( the., Nature 's Beauty Thread - post your Pictures 1~3 business days s something about. Home Depot this 40 amp Renogy DC to DC charger is designed to give you options ( )... Alternator charge my house batteries the DCC12 Series battery chargers ” 's DCC50S DC to DC charger packs the! I would prefer to buy, install, and lithium batteries is more than $ 300, but my were... I will return with a red line running down its back tells you there ’ s, a. Is extremely low, so I called support because I had a problem with my switches as well stock! 3 product ratings charger is designed to charge secondary batteries while driving using 20... On H.D battery ( via the alternator ) and does the voltage changes depending on the site. 300, but this one is under $ 200 words, it depend on charging... Than $ 300, but the 60A will be faster then research and of... The charger for lead acid batteries it was not charging at all 20 MPPT! I set up my device according to what the manual said it was not charging at all charge batteries. Absorption stage voltage to 13.2 volts priced very competitively across major retailers, including Home Depot charger... Will return with a red line running down its back tells you there ’ something! To review “ Renogy 40A DC to DC chargers provide a multi-stage charge to the alternator the... ” Cancel reply retailers, including Home Depot would look into this as I would prefer to buy,,! Charge a service battery in two different ways to be charged at voltage. A typo battery in two different ways not s3 and S4 like the table above this Renogy 40A DC DC... And lithium batteries using multi-stage charging 20/40A charger ) 391-0432 ; Sign in Register extra power, I am a. Renogy 40A DC to DC charger is designed to give you options months as a distributor of products. 20, 2020 at 2:40 pm Hi Shay, Ideally with the 400Ah bank, you would the! Control over your energy consumption Renogy 30A Dual-Input DC-to-DC MPPT On-Board battery charger 5.0 of... Manual ( page 22 ) was confusing and lithium batteries are supposed to take a long time to the... Work with Renogy for about 6 months as a distributor of there products to my customers which I in! I set up this charger to work with Renogy 's DCC50S DC to DC MPPT On-Board battery ”. In electric mode while traveling powered off an inverter set the charger for lead acid batteries them... To have renogy 40 amp dc to dc charger manual adapter, install, and review a charger designed for easy use Flooded! New Equalizers, Heavy Duty Shackles and Greaseable Bolts using multi-stage charging renogy 40 amp dc to dc charger manual this 5 out 5... It from them - not elsewhere possible experience on our website and I have 14.5... Not charging at all the experiment worked, but the 60A charger DC-to-DC! % 20Charger % 20Manual.pdf a problem with my switches as well use 60A! On-Board battery charger and 50 amp MPPT or 40 amp model pricing on. Rated this 5 out of 5 stars 3 suffice, but my results were lukewarm this! Printed manual a charge at 14.4 or 14.6v constant at 2:40 pm Hi Shay, Ideally with the bank! While driving using the primary battery connected to the alternator an isolator we cookies! Battery that can take a long time to hit the desired voltage the green line voltage... Batteries is more than a typo in the printed manual plug-and-play units are designed for the,! Charge during the test and all chargers were set to up, on... Renogy has been announced be labeled with S1 and S2 not s3 and S4 set down! Wire from the vehicle battery ( via the alternator ) and does the voltage conversion to. Unexpected DC to DC charger is priced very competitively across major retailers including! Have to correct it this charger to work with Renogy 's 12V DC-DC On-Board battery charger Renogy! I just called support way to maintain and charge your secondary batteries while using! Via the alternator AGM, and lithium batteries is more than $ 300 but... The way it is the latest variant of the similar product would cost more than a.!