I was hoping to actually get information on charging lifepo4 under various conditions like cold. Will be nice if you could help me figured out this. Advantages or disadvantages to either with your batteries. I have been doing some research on battery restoration and I think this content may help anyone looking into this product for more help https://bit.ly/3nlQMN8. I hope to use a 12v 100ah battery in my van and intend to use a DC DC charger. Our team is reviewing our verbiage to make sure we better reflect this. Would your LiFePo4 batteries be OK in such an environment? Im running with a Progressive Dynamics PD4575LI which always/only outputs a fix 14.6V, and does not apply a proper bulk charging stage. If you have any questions or concerns about charging LiFePO4 batteries, please contact us at any time at (855) 292-2831 or email us at [emailprotected]. Services | Hi, I'm new here but I have 4 @ RNG-BATT-LFP-12-170-BC batteries using 8 each RNG-160DB-H-BC panels across two controllers to charge them. I mean : as current goes down in absorption stage, current reaches a programmable value (for example 5A) and then charger goes into Float stage. We appreciate you bringing up the point of the 12.2V cutoff. We are proud to have worked with many manufacturers and vendors throughout the Southeast to provide the highest quality products and services available to our customers. My charger is a Abso Kisae DMT1250. If left at a half charge, the batteries have the potential to not last as long in storage. Depends on the chemistry. Found this post as I'm in a similar situation here in 2020 (two 100ah Renogy LiFePo4 batteries, DCC50S DC-DC Charger, Victron 702 BMS). To begin the series we will discuss the basics of charging batteries, and the products will be covered in other segments. Should I maybe measure absorption time @ 4 amps and then adjust +or- current value to get time closer to 30 minutes ? Sign up now for news and updates to your inbox. Thanks for reaching out. This becomes even more important when connecting batteries in series. They can tell me any charging setting for almost any controller/charger being made. Your system will be completely fine with one charger if its all wired in parallel. Products | If you have any additional questions please give our sales and tech team a call at 855-292-2831 and they can walk you through the charging process if necessary. Hi Jim, thanks for reaching out. Battle Born Batteries collects personal information for its internal use. In these cases where Victron has not tested the batteries, and has not been given specific instructions that have been confirmed with the battery manufacturers, the best case is to get the battery supplier or manufacturer to provide the required settings for their batteries. The Pb battery chargers I know of have a fixed absorption time (which may be programmable) BUT it seems that the best way to charge a Li battery is to switch from absorption to float when the charging current reaches a prescribed value, so I have 2 questions: Do you know of any PV powered chargers that can switch from absorption to float using a external signal (logic level input) and if using a constant but programmable absorption time, what is a good time (for a specific voltage)? I have a bank of two (BB10012) connected with a victron 712 battery monitor. when charging with an IP65 Victron 12v/15A smart charger do I charge each battery individually or do I connect the negative charging alligator clip to one end of the battery bank and the positive alligator clip to the other end of the battery bank? At the coldest temp, youd be at almost 16V for a proper absorption charge. I then turned on the PD4575LI converter. According to research performed by Lifeline, if you discharge your battery to this depth you could stand the risk of reducing your total available life cycles from 1000 to 275 cycles. In this case a charger using 14.2-14.6 volts for the bulk and absorb and anywhere between 13.4-13.8 volts for the float is fine. Hi Joshua, thanks for reaching out. Our goal is to minimize the heartache of choosing multiple vendors and to provide top notch service for the maintenance and expansion of your business. Or at the very least have a history of correspondence with them where you are seeking their advice for how their batteries are to be used, and following that to the best of your ability with the info they do provide. To figure out the appropriate amperage divide the capacity of your battery bank by 2 (For example if you have a 200Ah bank, select 100A). Seems you are you saying you can charge BB 100ah batteries at 100 amps? An earlier question asked if batts should be fully charged before use, and the answer was yes. Thanks for reaching out! The people who've gotten bad batches come back to Victron or Battle Born batteries after usually having very little success trying to initiate warranty claims from Renogy. When the BMS senses the temperature is below 25 degrees F, it will not let the battery accept a charge. I know this capacity is typically much better with LiFe batteries sometimes 90%. Thank you for reaching out and let me know if you have any additional questions. Hi there, thank you for reaching out and your patience is appreciated at this time. The BMS is programed to handle temperature compensation. The Intelipower 9200 Charge Wizard chargers will work great with our batteries, but you need to use the 9200 Wired Remote Pendant to force the converter to output a proper voltage in the BOOST MODE. is low 15 or less. Sorry I forgot to include my name and email on the first comment I sent. system except that it does not have an Alt. You are welcome to reach us at [emailprotected] or give us a call at 855.292.2831. The charger has a desulfation mode thats supposed to come on when it thinks the battery needs it and I understand that lithium batteries can be damaged by that. I am looking for a drop in replacement to my wet cells that will meet my 60amp A/C requirement, thank you. If I am using shore power I expect the battery charge to quickly get to 100% and if I get reasonable solar, the battery should reach 100%. Set the float charge to 13.6, the bulk charge should be set to 14.6. Float voltage: 9V (since that is the lowest it can be set. Im trying to understand the best way to charge a Lifepo4 battery from my alternator. Is it detrimental to leave my BB 100ah batteries on an active solar charger (with properly set bulk/absorb/float parameters) for long periods of time, like for 6 months? I am using a Progressive Dynamics Model PD9245C to charge a 12v Lead Acid backup battery bank for my home and I want to know if the same charger will safely charge the lithium battery. Please let us know if you have any additional questions and have a great rest of your weekend. What can I do to limit the SOC to those parameters or is this something that is not worth worrying about and the BMS in the battery will take care of it? I have passed along your email to someone on our sales and tech team to assist with your system troubleshooting. cjn. . I have two 100ah Battleborn batteries in parrallel. Please Login or Register. On a full charge, our batteries have been proven to last at least a year in proper storage conditions with a 23% depletion each month. Would your batteries work under either or both senarios, or what changes should should I make to accomplish either? Ideally we want our battery to regularly reach a 100% SOC. I understand that your internal BMS has a low temp disconnect to prevent damaging the cells when charging when the batteries are too cold. I am looking for the charge settings I need to charge them correctly. Most of the time if it is warm I will be plugging in at night and the Victron Multiplus 3000 can charge the batteries. Hey Bob, it will not be detrimental for your batteries. I have moved the alternators to the start battery & a Sterling Power BBW12120 will charge the BB10012 house bank when underway. Can you provide similar information about your batteries? Or does it only take a maximum of 50 A? I have seen suggestions that holding the batteries at 100% SOC for long duration will impact the battery lifetime is this true? My victron was at 0% SOC and the fridge was still running, drawing over 8amps. We will be releasing a 12v 50ah in the next week keep an eye out on our Facebook page and website. I would check with your battery manufacturer to answer this question for you. The BMS does not regulate incoming current, which is why there is a need for a DC to DC charger to regulate flow of current from the alternator to the batteries. Hi John, thanks for reaching out. Scroll through setup options until you see 03 Charger Setup then press to select this option Thank you so much for the content on batteries! Hi Chuck, I apologize for the delay in getting back to you. I have a 100 watt panel on the roof and another 200 watts in a portable suitcase in case I need it, and for emergencies, a 2000 watt Yamaha inverter generator. Scroll through options until you see 03C Battery Type then press to select. Your email address will not be published. In case you missed my earlier post, regarding the low temp disconnect of the internal BMS. Hi James, please give us a call at 855-292-2831 so we can confirm everything and run through your system. If I decide to add another in a few months, are there any special procedures that I need to follow? We know that building or upgrading an electrical system can be overwhelming, so were here to help. Products If I want to charge them now in my home to verify they are ok when I receive them from BB, what is the suggested way to charge them? As for the article, we are currently rewriting these blogs and creating a new FAQ series, so stay tuned for those updates. There is no actual charge profile on this unit, and the maximum wire gauge recommended is 10 gauge. There is a wide variation among values for charging algorithms for lead-acid batteries. Please tell me the optimum AMPERAGE level for charging Battle Born 12v 100ah batteries. This unit has a simple rotary dial that the output voltage can be set to; we recommend 14.4v for Battle Born Batteries. Hi Jeff, thanks for your comment. Max Charge Time? I do know not much about the Rav4 hybrid elect. It does not limit the charge current. Thanks. If you have any additional questions please give us a call at 855-292-2831. In your case, having a constant 14.6V is acceptable for the batteries but the batteries dont necessarily draw power from your charger, they will accept whatever amount of charge your charger puts into them. A BMS of 100A, where it has specified that it charges with a maximum of 50 A, is affected if it is subjected to charging directly from the car where the alternator removes 130A? Once the bulk voltage is reached, the charger enters a second stage, called the absorption charging stage. The existing trailer converter is a WFCO 8955. No need to add a battery disconnect for charging. If left at a half charge, the batteries have the potential to not last as long in storage. What would be considered the resting voltage of a fully charged Lithium battery, with no load connected? I frequently use my RV in below freezing conditions in the winter. And as for support well, neither we, nor Renogy, nor especially Victron are going to be able to offer support or advice for Renogy products because they didn't make or design them, so no one actually really knows what their specs are. Good morning Chris! Atlanta, GA 30315. My concern is that the ARC-50 display almost always shows the status as Constant Voltage DC 14.3V. Very rarely do I see the status as Quiet 13.6V. It seems Im holding the batteries at high voltage way too much. If you have anymore questions please feel free to call us 855-292-2831 or email us at [emailprotected]. I am looking for something in the range of a 50ah, 12V battery. I have a pd4655 liv and a 3210an Epever Tracer for my 100 amp Battleborn. Battery Type? Also, join us on Facebook, Instagram, and YouTube to learn more about how lithium battery systems can power your lifestyle, see how others have built their systems, and gain the confidence to get out there and stay out there. lithium batteries power 12 volt devices with the proper voltage just as a regular lead acid battery so running devices will not be a problem. I'm glad to hear that you've had a positive experience with their batteries and BMS, but I have a very long list of customers who have had to swap theirs out from between 6 months to 3 years, roughly, due to cell failure/BMS failure/erratic BMS behaviour. Switching voltage converters such as MPPT charge controllers can cause radio interference, so Im exploring a very simple system using a relay run by the sites main microprocessor. I thought the answer was a maximum charge rate of C/2. I have programmed the regulator with Bulk/Absorb at 14.6V and Float at 13.6V. You can find the blog here: https://battlebornbatteries.com/lead-is-dead-white-paper-study/ I currently have 8 ea 6vdc battery hooked in series for 48vdc. etc? That would be a great charger to be compatible with our batteries as long as it has whats in this image. This will offer a battery that can offer maximum capacity along with even charge and discharge. If you have any additional questions please give our sales and tech team a call at 855-292-2831. See why all of our clients are repeat clients with our exceptional service, attention to detail, and workmanship. So, instead of turning off, the battery charger enters a third stage called the float stage, in which the charger drops to a lower voltage and holds at that voltage. Since we go off-grid for up to 5 days at a time, I have decided to upgrade to a lithium battery system. The bulk and absorption voltages typically vary between 14.0 and 14.8 V, and the float can vary between 13.2 and 13.8 V. The 12V Battle Born Batteries sit comfortably right in the middle of these ranges.