See what our Experts say about this Redarc Battery Charger

• Recommended Battery Isolator for Ram ProMaster with 220 Amp Alternator
  In regards to battery isolators, they should be rated at or close to the changing amperage rating of your alternator. They don't really need to exceed this as it's very unlikely your alternator will ever reach its max charging amperage therefore, I recommend the Redarc Smart Start Battery Isolator part # 331-SBI212 which is rated at 200 amps and the highest we offer. That said, these don't work with lithium batteries and the highest rated battery isolator we do offer for this is the Redarc...
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• Will DC to DC Converter Protect Tow Vehicle Alternator With Lithium Batteries
  Hello again Paul; I read that as you wanted to install the batteries and the solar, not that you already had the solar installed, so sorry about that. A DC/DC converter will certainly protect the alternator but whether or not it is necessary is debatable. There are a lot of people towing with lithium batteries that don't have this on their trailer/vehicle and don't experience a problem. With the solar keeping you topped up it is even less of an issue unless you're boondocking and draining...
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• Best Way to Charge Auxiliary Lithium Ion Battery on 2019 Ram ProMaster
  The best way to charge your auxiliary LiFePO4 Deep Cycle Battery from the main battery of your 2019 Ram ProMaster is with the Redarc In-Vehicle BCDC Battery Charger # 331-BCDC1240D. This was designed for larger batteries and it has a built-in smart charging system that reads what kind of battery is being charged and then it adjusts the amount of power output so that the battery isn't damaged and that it gets the most efficient charge possible. Redarc recommends using the 60-Amp MIDI Fuse...
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• Charging Lithium Trailer Batteries While Driving
  Yes, your solution is a DC to DC charger as there is not a "good" way to charge your 100Ahr trailer battery using your Tacoma's 7 pin connection only. You will get some low amperage trickle-charge while hooked up and the alternator running, but not enough to fully charge your trailer battery. For systems where your trailer batteries are rated for 75-200 Amp-hours, use the Redarc # 331-BCDC1225D 25-Amp, Dual-Input DC-DC Charger. You will additionally need three Redarc # 331-FK40, 40-Amp...
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• Which Size Fuses Are Needed To Install Redarc BCDC Battery Charger 331-BCDC1225D?
  The Redarc In-Vehicle BCDC Charger # 331-BCDC1225D you were looking at requires a 40 amp fuse between the charger and the start battery, a 40 amp fuse between the auxiliary battery and the charger, and another 40 amp fuse between the auxiliary battery and the load. This is shown in the included diagram for Lithium batteries. The isolator # 331-SBI12-LLD you are using does not count as a fuse. Redarc recommends using their 40-Amp MIDI Fuse Kit # 331-FK40, and since two fuse holders are...
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• How to Tell if 2019 Ram ProMaster 1500 Has Smart Alternator
  I believe you are talking about a smart alternator and from my understanding your 2019 Ram ProMaster 1500 shouldn't have one so you'll be good to use the Redarc In-Vehicle BCDC Battery Charger # 331-BCDC1240D with the Redarc Smart Start Load Disconnect # 331-SBI12-LLD. A normal alternator has a constant output of the same amount of power while a smart alternator can vary the power output depending on what the vehicle demands. Typically these are found on economy or high-end cars but there...
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• Is Battery Isolator Needed When Using Redarc BCDC Battery Charger To Charge Lithium AUX Battery?
  I would be happy to help! Since you are using the Redarc In-Vehicle BCDC Battery Charger # 331-BCDC1225D to charge a Lithium battery you will need to install the Redarc Smart Start Load Disconnect # 331-SBI12-LLD. This will get installed between the lithium battery and the load on the battery. In regards to the solar panel, you will need to connect the yellow wire from the # 331-BCDC1225D to the port on your trailer that your solar panel plugs into that way the charger is distributing...
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• Recommended Trickle Battery Charger for Lithium Trailer Batteries While Driving
  I do have an option for you but it takes a special type of charger to charge lithium batteries and it's not recommend to trickle change them. I'm sure this was more than you were expecting but anything worth doing is worth doing right and the correct way to charge the lithium trailer batteries while in tow would be with a charger such as the Redarc In-Vehicle BCDC Battery Charger part # 331-BCDC1240D which has a mode specifically for lithium batteries. This charger will make sure your batteries...
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• Parts Needed With Redarc In-Vehicle Battery Charger When Connected To Lithium Battery
  Yes, the Redarc In-Vehicle BCDC Battery Charger # 331-BCDC1240D can be used to charge one 100AH lithium battery. Once the charger charges the battery it will go into a float mode to maintain the battery charge so that the battery is not damaged from overcharging. Since you are using with a lithium battery a Redarc Smart Start Load Disconnect # 331-SBI12-LLD is used to prevent the lithium battery from excessive discharge.
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• Using Redarc Battery Isolator on Boat with Two Engines and Batteries
  This is a really good question. I spoke with my contact at Redarc and this is what they sent me: There are a few variables to the application but realistically keeping each engine with its own starting battery is recommended. The reason behind this is if there was an issue with one engine, you will always be able to run the other. My assumption is that your customer is wanting to run auxiliary equipment. If this is the case then another battery or battery bank is required and then run...
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