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%. I read above in response to comments and in the manual that they have the sensor that will shut off the current to the battery when its less than 25 degrees. SC-122420JUD - this is the PWM version optimized for portability, can do 12V or 24V at 20A maximum and is the unit you would select for portable use. 14.1 volts would be fine to set it to. That would be a great charger to be compatible with our batteries as long as it has what’s in this image. SC-1220JU - this is the MPPT version in 12V only with 20A maximum rated output and is optimized for fixed installations utilizing LiFePO4 batteries and does not come with a digital display. Most of the time if it is warm I will be plugging in at night and the Victron Multiplus 3000 can charge the batteries. I’ll keep an eye out for excess current which trips the breaker. For alternator charging, we recommend using the Victron 12/12 – 30 Smart Charger for a number of reasons. Hi Chuck, I apologize for the delay in getting back to you. We don’t recommend you exceed this charge rate as it can lead to a shortened battery cycle life. These stages combined sequentially form what is commonly called the “charging algorithm.” A battery charger may generally be classified by a charging current (i.e. Please give our sales and tech team a call at 855-292-2831 if you are still having issues with your setup and they can offer resources for the IP65 Victron Smart charger. Sometimes we use campgrounds where we are hooked up to shore power for a number of nights and other times solar is our only source. Along with the good safety characteristics of LFP batteries, this makes LFP a good potential replacement for lead-acid batteries in applications such as automotive and solar applications, provided the charging systems are adapted … Hi Corey, thanks for your feedback! Thank you again for your valuable feedback. 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? This article was suppose to be talking about charging lifepo4 batteries but it instead talks about lead acid battery charging. In regards to both of your questions, the BMS current limits apply to the discharge only and not the charge rate. Our only concern would be a higher fixed voltage for an extended period of time at 14.2 or greater. Battery Type? You can install a DC light fixture with an incandescent bulb if the compartment is well insulated or use a warming pad to keep the batteries above freezing. Our sales and tech team is more than happy to help as well, if you give them a call at 855-292-2831 they can walk you through the process live as well. LiFePO4 batteries do not require temperature compensation for voltage when charging at hot or cold temperatures. Battery capacity is measured in mAh (milliamp-hours), being the amount of You are correct that we could have discharged to 10.5V to find the proper 50% DOD. Voltage exactly as you'd expect a LiFePO4 battery to give. I live on the boat when I am in Seattle & so there will be a DC load (Lights, Refrigerator, Diesel heat) while I am onboard, but I also leave the boat unattended for several months at a time while I am out of town for work. ; The PRO+ range uses a new generation of Lithium cells, with better performance. This shows that the cycle life of LiFePO4 battery is about 4~8 times that of lead-acid battery. I just received 3 of your 100 ah 12v batteries, do I need to charge them before installing or using them? This means that the battery needs to regularly hit at least 14.2 volts (100% SOC) in order for the cell modules to balance internally. Your charger seems to be a 75A charger and if that is the case, it is recommended to use this with a battery bank of 150Ah or higher. One measurement I have is 45A into the battery at 13.85V, but I don’t know the state of charge. What percent increase in battery life would you expect if your battery were only charged in the range 25-35F vs only charged in the range 35-45F? If you have a Sterling DC to DC charger (30 amp) For a 6 x100 BB battery bank will it cause damage? etc? Because of the nominal 3.2 V output, four cells can be placed in series for a nominal voltage of 12.8 V. This comes close to the nominal voltage of six-cell lead-acid batteries. Give us a call for more information on this, 855.292.2831! 435AmH . So…. Thank you for reaching out and let me know if you have any additional questions. it has, 14v, 14.2v, 14.4v 14.6v. This field is for validation purposes and should be left unchanged. This will need manual interaction each time you want to fully charge the battery, and our team recommends doing it once a week or so. In your case, having a constant 14.6V is acceptable for the batteries but the batteries don’t necessarily draw power from your charger, they will accept whatever amount of charge your charger puts into them. If you have a higher voltage applied in float(such as 14.6) then we would recommend that this be no longer than 3 weeks at a time. However, a lead-acid battery will rapidly lose charge when the charger is disconnected. During this process, the battery’s open-circuit voltage increases, approaching the applied voltage of the charger. * What’s best and what do you recommend given you sell both products? In this blog series, we will post the results of our tests for a variety of LiFePO4 chargers – including converters, inverter chargers, and solar charge controllers. In regard to the temperature compensation, we modeled this experiment after a typical customer experience, so temperature compensation was not included, as most customers would not implement this in their own system. The motorhome is on shore power most of the time, so it can be months between the batteries being called upon – but they have always worked when needed. Can the LiFePO4 batteries be charged with a standard marine battery charger ? I understand that your internal BMS has a low temp disconnect to prevent damaging the cells when charging when the batteries are too cold. Typical lead acid chargers can work in some instances but we would have to get the model # for your marine battery charger and check the settings for compatibility. The higher the amp rating (A) of the charger, the faster your battery will charge*. The final charge conditions was 14.65V at 270 mA. Would your batteries work under either or both senarios, or what changes should should I make to accomplish either? Thanks. CHARGE PARAMETER 12V SYSTEM 24V SYSTEM 48V SYSTEM Bulk Voltage 14V – 14.6V 28V - 29.2V 56V - 58.4V Absorption Voltage 14V – 14.6V 28V - 29.2V 56V - 58.4V Absorption Time 0- 15 min 0- 15 min 0- 15 min (LiFePO4) technology this is a battery built to last. In the case of LiFePO4 chemistry, the absolute maximum is 4.2V per cell, though it is recommended that you charge to 3.5-3.6V per cell, there is less than 1% extra capacity between 3.5V and 4.2V. In addition, these cells are sorted and matched for the constitution of the pack. Thanks. Lifepo4 Lithium Battery Factory 12V 24V 48V 96V from 7AH to 1000AH. In my application would you advise that I add external charger disconnects to prevent accidental charging, such as from solar panels, until I’m sure the battery warms above freezing? An earlier question asked if batts should be fully charged before use, and the answer was yes. Thanks for the info. Hi Andy, great question! Voltage and current settings during charging. With a lifespan of 2,000 charge cycles this battery will last up to 4 times longer than your typical SLA battery. You explain Peukert, and you are familiar with that dude… you know.. Ohm and his law. We do acknowledge that some customers are aware of temperature and load effects on the AGM battery cutoffs, but a vast majority do not know or do not update their programming to reflect this based on their given circumstances. Welcome customize shell,weight, size,MBS,technology,etc ! Exceeding the 0.5C charge rate can prematurely wear down the life cycles of your battery which is why we recommend staying within this specification. At 5 minutes of charging, 13.26 V at 50 A. I’m so confused. When you charged the AGM in the freezer, did you use temperature compensation? 1-cell to 8-Cell chargers. 12 V LiFePO4 charger recommended. The full charge voltage of a 12V SLA battery is nominally around 13.1 and the full charge voltage of a 12.8V lithium battery is around 13.4. We do not share customer information with any third parties. Don. Lastly when I charge the battery bank, I am currently using the Li-ion setting, I get a finished voltage of 14.2, is this the 100% SOC I should be setting my victron 500a/50ma shunt as the 100% level of battery charge? I have 6 12V 200AH lithium ion batteries, and I was wondering what would be the best way to charge them all at once, and how many Amps and volts my charger would have to put out to charge them in at least 10 hours from being completely depleted. When the BMS senses the temperature is below 25 degrees F, it will not let the battery accept a charge. It does not limit the charge current. So when the battery is 100%, I have to … Make sense? This cell under load will reach 3.3v quickly and then remain between.3.2 and 3.3v for quite a while (flat discharge curve coming into play). If you have anymore questions please feel free to call us 855-292-2831 or email us at [email protected]. Sure, LFP is a superior chemistry in almost every way, but you don’t need to manufacture misleading data and masquerade it as something scientific to poo poo AGM. I would like to convert my wet cells to a low maintenance battery for my home solar system. Vehicles charge lead acid to 14.40V (2.40V/cell) and maintain a topping charge. We appreciate you bringing up the point of the 12.2V cutoff. I understand that the best SOC is between 20% and 95% to maximize the life of the battery. Hi there, I will include the criteria of amperage level for our batteries: But they can be in float mode as long as the float is around 13.6, it is OK for the batteries to float around that voltage. 110A 12V Battery Lithium Ion Power Cell Technology A Drop In Replacement & Upgrade from AGM, Gel or Lead Acid Batteries.The Smart Battery 12V 110AH Lithium Ion Battery is the Ultimate High Performance solution for virtually any 12v power application. If you have any other questions or want to talk about all things batteries, you can call our team at 855-292-2831. I see on your recommended chargers you have the Victron TR-smart DC-to-DC chargers and also the Victron DC-to-DC converter. These voltages work very well with your typical 12V, 24V, and 48V inverters. Also, in my application there is a 50A circuit breaker between the converter and the battery. There is no actual charge profile on this unit, and the maximum wire gauge recommended is 10 gauge. Please advise. The BMS is programed to handle temperature compensation. I have this same setup, with 6 – 100Ah batteries and a Magnum inverter/charger. Charging parameters can be a bit tricky at times and vary depending on the charger and how many stages it allows for. Do you have a setup sheet listing all of the various setting for the ARC50 controller? If left at a half charge, the batteries have the potential to not last as long in storage. What are the recommended settings when using Magnum’s ARC50 charge controller? © Copyright 2021 Battle Born Batteries. LiFePO4 … Thanks for reaching out! Every day we get questions about charging LiFePO4 batteries and lithium battery chargers. Hello Crosby, Hi Don, thanks for reaching out! … I’m running with a Progressive Dynamics PD4575LI which always/only outputs a fix 14.6V, and does not apply a proper bulk charging stage. Four LiFePO4 Battery in series produce 12.80V, a similar voltage to six 2V lead acid cells in series. 15.3 volts will destroy your batteries, keep it at 14.4v or below. https://battlebornbatteries.com/boondocker/. (855) 292-2831 No need to add a battery disconnect for charging. I frequently use my RV in below freezing conditions in the winter. Thanks~. Dedicated charging profile for lithium batteries utilises Constant Current (CC) followed by Constant Voltage (CV) to a particular capacity. We are currently in the process of revamping our FAQ videos so it is certainly something that we will keep in mind throughout. That’s a good questions. Hi Kevin, there are a few differences between the Victron 12/12 – 30 converter vs the Victron 12/12 – 30 Smart Charger. Hi Christine, thanks for reaching out! Do you sell smaller batteries? Hey Bob, it will not be detrimental for your batteries. Your email address will not be published. Lithium Ion battery 12V-45Ah - LiFePO4 - PowerBrick ®. A fully charged LiFePO4 cell is 3.6V, and a fully depleted LiFePO4 cell is 2.5V. 775 221 8897. It is in fact a higher cutoff, but after reviewing the AGM battery manufacturer’s load voltage versus DOD chart and calling manufacturers for their recommendations, we chose to stick with this cut off to reflect what the average system is programmed with. Alternatively, if you don’t want to or can’t use the custom settings then they can just set the retome to the “AGM2” battery type and it will still work well to charge our batteries. Our team is reviewing our verbiage to make sure we better reflect this. At the coldest temp, you’d be at almost 16V for a proper absorption charge. If you want to get more information about these various conditions you can give us a call at 855-292-2831 or email us at [email protected] and one of our sales and tech specialists can help you. It varies by just 0.2 Volt all the way from 99% to 30% SOC. Each LiFePO4 cell has a NOMINAL voltage of 3.3V. and how the lifepo4 algorithm is set up. I am looking at sterling power 30 and 60 amp dc to dc chargers. LiFePO4 batteries' state of charge versus charging voltage As the title says. It should now read “Set Recharge Volts” and scroll until it reads 13.3V. The point of this stage is to keep the battery topped off, and account for the fact that lead-acid batteries tend to drain, even when there is no load connected. Eight cells connected in a series make a 24V battery with a nominal voltage of 25.6V and sixteen cells connected in a series make a 48V battery with a nominal voltage of 51.2V. We don’t limit this in case the end user needs to apply a quicker charge to the battery based on their specific scenario and aren’t worried about the potential shortening of cycles that can occur by this higher charge rate. can I leave my rv plugged into shore power for an extended period of time with out harming the batteries. Unlike gel or lead-acid batteries, the VoltaX LiFePO4 battery is extremely portable and has a longer shelf-life. Good Morning, Final Charge Stage? Once dip switch 5 is set to lithium you can set the charging voltage to 14.4 volts with the other 4 dip switch positions. 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. I have seen suggestions that holding the batteries at 100% SOC for long duration will impact the battery lifetime – is this true? At this point, the battery is fully charged. This happens OFTEN in the winter in CO; what do you recommend to keep the batteries working, warm and functional? I have passed along your email to someone on our sales and tech team to assist with your system troubleshooting. Charging completed in about 2 hours with 1150 Wh in. 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. Sign up now for news and updates to your inbox. I’m trying to understand the best way to charge a Lifepo4 battery from my alternator. I am looking for something in the range of a 50ah, 12V battery. Is that correct? Nominal Voltage: 12.8V: Nominal Capacity (at .5C, 77°F) 100Ah: Minimum Capacity (at .5C, 77°F) 95Ah: Expected Cycle Life >4000 cycles w/1C charge and discharge rate, at 77°F, 80% DOD: Operating Specifications : Charge Method: Smart charger, constant current, constant voltage: Charge Voltage Range (Max 14.6V) 14.4 -14.6V: Continuous Charge Current: 100A Max What Is A BMS (Battery Management System). also what voltage setting would be the best for your battery? I hope to use a 12v 100ah battery in my van and intend to use a DC – DC charger. Depends on which LiFePO4 cells we're talking about. I then turned on the PD4575LI converter. Hi John, thanks for reaching out. We recommend removing the main battery connections if a disconnect switch is not incorporated in your system since our batteries do not require a trickle charge. Once the temperature is back up above 25 degrees F, the battery will be able to accept a charge again. During this stage, the charger adjusts its applied voltage to deliver the maximum current to the battery. Charging Lithium batteries requires a voltage in between 14.2-14.6 volts for bulk/absorption, 13.6 or lower for float and should not have an equalization stage.