The alternator will charge the new Lithium ion battery the same as it charges the lead acid batteries. Lead acid batteries tend to perform best between C/8 and C/12 rates. With lithium ion battery systems get enhanced performance 90-99% effeciency with 4x life time and 4x faster recharge after discharge, a great diesel fuel saver where mobile telecom network sites are operating many hours on diesel generator that consumes a lot of diesel fuel. The chemistry used in Lithium Ion allows for more charge cycles. See more options for lithium batteries at our website or contact us at 877-878-4060 to help you select the right lithium batteries for your specific needs. I have a 2019 all new 1500 limited with the 5.7 hemi. Can you replace the lead acid battery with lithium? If you currently have a V-belt, you may need to modify the engine for a serpentine belt before you can use the larger Balmar alternator. After observing battery voltage gauge on my car, I can see my lead acid battery operate voltage is from 11.8v to 14.8v. I found that you can buy batteries for RC cars that match the power requirements. Balmar makes great alternators and external regulators for this. If your lithium battery bank is in a cold environment, you need to either get a battery that has a built-in heater like the KiloVault CHLX battery, and/or build an insulated battery box to hold in the heat generated while charging. It can also be viewed via BlueTooth. The math is the same for a flooded lead acid battery bank as for a sealed one. With a higher DoD, higher cycle count, and higher charge/discharge rate, it’s easy to see how using lithium batteries in your RV or boat saves space by requiring a physically smaller battery bank…and I don’t need to explain the advantages of saving space in an already tight spot. increasing. Higher Capacity. Likewise, too slow of a charge of lead acid batteries can cause premature sulphation, shortening their life. So let’s again compare a 518Ah 12V lead acid battery bank with the 300Ah 12V lithium bank. There are a few ways to prevent this from happening. John Salisbury from LithiumBoost.com shares with us the benefits of a lithium battery over lead acid batteries. Large lead-acid batteries are used everywhere, and people who want more power, capacity and life are replacing them with Lithium batteries. Again using the 100Ah battery example, if you have a 10 amp (A) load, that can drain the battery completely in 10 hours  (100Ah ÷ 10A = 10 hours). But there’s yet another physical benefit of replacing lead acid batteries with lithium for RV and marine applications: Lithium batteries also don’t have the crazy weight from being made with lead! Lithium batteries charge by receiving a steady supply of current until they are fully charged, then the charger cuts off. Victron Orion-TR Smart DC/DC Converter setup. With flooded’s 2500 cycles versus lithium’s 5000 cycles, a well maintained flooded battery bank can last half as long as lithium. Nowhere that I can see on the battery does it say what type it is. That means a 100Ah lithium battery rated for 80% DoD can safely provide you with 80Ah without being harmed. If you intend to replace a lead acid battery with lithium for your starting battery, make sure the new lithium battery is rated to handle enough current to do so. Compared to lead acid batteries, LiFePO4 batteries offer more power, higher current, a longer life, smaller footprint, lower weight, and safe, maintenance-free operation. Sealed lead acid batteries are among the oldest and cheapest battery technology, but Lithium-ion has become more prevalent due to its longevity. Using desulphators could help squeeze some more life out of it, but instead of asking how to restore lead acid batteries that are clearly past their prime, the question you should be asking is: Can I replace lead acid batteries with lithium batteries in my boat or RV? That’s a much longer lived battery bank with lithium batteries. Its turn-key replacement system enables you to convert your lead-acid system to lithium in less than 30 minutes. For a sealed AGM battery bank: 1400Wh x 2 days of autonomy (days without sun) x 1.11 temperature derate (60F) ÷ 50% DoD (25% x 2 days without sun) ÷ 12V battery bank = 518Ah bank. It’s time. Lead-acid batteries don’t fare as well since it can take up to 10 hours for them to charge fully safely. So the flooded is a slightly less expensive solution than sealed lead acid at $2100 for two banks vs. $2600 for one lithium. This means a 100Ah lithium battery can handle 100A (or more) of charge/discharge current. at 14.4V. That is pretty significant if you ask me. We’ve done our best to give an apples-to-apples comparison of these batteries based on their printed specs. A buildup of the gas inside a vehicle or vessel can be explosive. This requires you to be prepared with proper safety equipment including gloves, safety glasses, and baking soda to neutralize the acid if needed. Victron SmartShunt – Monitors Batteries via Bluetooth. That is a significantly smaller battery bank with lithium batteries. Due to lithium batteries’ voltage curve and ability to handle high current, loads like these will not cause the voltage to drop dramatically, eliminating the problem of voltage sag. For example, the KiloVault HLX and CHLX batteries have Bluetooth to your Smartphone to see down to the cell level of each battery. You may notice that your lithium ion battery gets 3 to 5 thousand cycles in its life, where your traditional battery will only see 1,000 cycles max. Do i need an external charger ? Category : Li-Ion Batteries To Replace Lead Acid Batteries. If you cycle your battery bank every day for a year, that’s 365 cycles. The outgassing of the battery is normal, but requires owners to regularly check to see when the electrolyte level gets low from the outgassing. Boxborough, MA 01719, © 1999 – 2019 Alternative Energy Store Inc. All Rights Reserved. Likewise, if you have a 50A load on the same battery, that would drain it in 2 hours  (100Ah ÷ 50A = 2 hours). You can use multiple DC/DC converters in parallel to increase the rate for larger alternators. Any good battery system should have the ability to monitor both the individual batteries, and the whole battery bank. Easy lithium drop-in replacement battery for lead acid battery. A lithium battery saves on your electric bill, as it is up to 96% efficient and accepts both partial and rapid charging. LCO batteries are most commonly used in cell phones, hoverboards, and electric cars, and are generally not recommended for mobile applications. For a lithium bank: 1400Wh x 2 days of autonomy ÷ 80% DoD (after 2 days without sun, daily is 40%) ÷ 12V battery bank = 290Ah battery. By choosing lithium batteries as a lead acid battery alternative for marine/RV applications, you will need fewer batteries, and those batteries will last longer, cycle deeper, deliver more power, and weigh less. The car is about 5 years old, and while start/stop, the car drains the lead acid battery, and voltage drops from 14.8v immediately to 12v and when it drops to ~12.2v, the engine ignites again. Your RV or boat’s lead acid battery bank had a good run, but just isn’t able to hold a charge anymore – so what should you do? Lithium batteries tend to have a slightly higher voltage than a lead-acid battery of a similar specification and also tend to have a narrower operating window of voltage when depleted too. I’ll round up to 300Ah and use two KiloVault 1800 at $1300 each for a total of $2600. They monitor the temperature and will wind down to appropriate amperage if the alternator gets too hot. 3. This runs the risk of acid spills if overfilled or overcharged. How it works. Lead acid batteries also perform best when charged at different rates based on temperature. Replacing traditional lead-acid with Lithium Ion. The substantial benefits that Lithium Ion technology offer over lead-acid technology means that using Lithium Ion batteries is becoming an ever more popular choice. LiFePO4 Battery: 6V 5Ah (30Wh, 10A rate) - Replace SLA 6V 5Ah, lighter weight - UN38.3 Passed. After all, lithium batteries are becoming the standard for renewable energy storage. The Junsi iChargers are buck-boost converters which are DC in DC out and are bi-directional. Let’s get this out of the way up front: A lithium battery can cost three or four times as much as a lead-acid AGM battery of similar nominal capacity. Lithium Ion batteries are going to last you a lot longer than traditional Lead Acid. The Victron Energy Smart Shunt provides a low cost method to monitor your whole battery bank via Bluetooth from your smartphone. We are still going to use two of the KiloVault HLX1800 for $2600, or I could use a single KiloVault HLX3600 300Ah 12V battery for the $2500. Some lithium batteries can generally handle a C/1 rate, or even higher for short periods depending on the battery. Amy BeaudetAmy Beaudet has been in the solar industry at the altE Store since 2007. Now that you’re convinced lithium is the best way to go, you need to be aware of a few things when replacing a lead acid battery with lithium. Just as with sealed lead acid batteries, making sure the cables haven’t shaken loose with vibration from travel, and a visual inspection to ensure all is well is all that is needed. So, if a lead-acid battery can last around 500 deep discharge cycles (or 80% depth of discharge cycles), a lithium battery can perform the same task upwards of 2,000 times, negating much of the upfront premium price paid for lithium batteries. Keep in mind that if you don’t have a sunny day to recharge your batteries after a day of use, the DoD will go down again the next day – so planning to use 25% per day will allow you to use less than the 50% maximum after two days of use. Both lead-acid and lithium ion batteries have surged in popularity over a couple of years. But with normal, and perhaps even a bit of rough treatment, the different batteries have different safety concerns that need to be addressed. 1. Let’s look at some cost examples when designing a battery bank for a 12V system that uses 1400Wh a day. If you are going to be leaving your boat or RV for a season of storage, it is recommended that you leave the battery bank at around 90% state of charge. Lithium batteries do not have the CCA rating. Different battery chemistries have different risk factors. Lithium ferrous phosphate (LFP or LiFePO4) chemistry has become the standard lithium battery for marine, RV, and general solar PV use because they have no thermal runaway issues. With a Float voltage of just below 14V, you can maintain the charge without overcharging it. If the car is designed using Lithium battery in mind from the first place, then it can be smaller (half the size, and can be smaller). You can use the same wiring and hook ups as used with your current lead acid system. Simply remove the Lead-Acid Batteries and replace them with the Lithium iron phosphate Batteries and attach cables and secure the holding bracket. Cycling a battery means discharging it to any amount and recharging it to a fully charged state. Proper ventilation mitigates this concern. Be sure to check the manufacturer’s specs when selecting a lithium battery, as some do not support as high of a current as others. This comparison is based on the length of the warranty offered by the manufacturers. It does not include a display, so you can only view it via Bluetooth. She’s been a sales rep, an instructor, and an all around solar evangelist, sharing her passion for solar around the world. If you are currently charging your lead acid batteries with solar, your alternator, and/or shore power, you may be able to keep your existing charge controller or inverter/charger. The Victron Energy Smart Battery Monitor BVM-712 gives you a local display for convenient viewing of battery voltage, current, power, amp-hours consumed, and state of charge (SoC). based technology. Different batteries will have different preferences, so be sure to see the manufacturer’s recommendations when configuring your charger. Even though their lifespan has been improved, Lithium-ion batteries still lack the power performance associated with “high rate” batteries used for pitch actuators. A 12v lithium LiFePO4 battery fully charged to 100% will hold voltage around 13.3-13.4v. Limitation of Lead-acid batteries … A cycle is a cycle regardless of how deep the discharge is, but the depth of discharge directly affects how many cycles you can expect your battery to last. Likewise, if you are running a DC load like your bow thruster directly off the battery bank, you need it to maintain a high enough voltage for it to work when you really need it to work. A lithium-ion phosphate battery holds almost double power as the Valve Regulated Lead Acid batteries. Due to the significant development in Lithium Technology over the last 5 years, the demand for. The term “drop-in replacement” has become popular, but the reality is there are a few other things you’ll need to do to safely upgrade from lead acid to lithium batteries in your boat or RV. In practice, this means that Lithium-Ion battery banks are very well suited to powering high current loads like an air conditioner, a microwave or an induction cooktop. A lead acid battery’s capacity is rated at 80°F (26°C), but the colder it gets, the more capacity falls. Victron Energy Orion-Tr Smart 12/12-30A charger, The 2021 Federal Solar Tax Credit Step Down, Rapid Shutdown Blog Part 2; Charge Controllers, NEC 690.12 Rapid Shutdown of PV Systems on Buildings – Part 1 Inverters, Two Ways To Get Amped, Three Ways To Get Charged, 6 Thoughts About Social Distancing and Self-Sufficiency from the Off-Grid Living Experts at Real Goods, Looking Back At altE’s 9th Annual Solar Installer Conference, altE’s Acquisition of Real Goods: 1 Year Later. Our lithium batteries are 99.1% efficient whereas lead acid batteries can be as little as 50 - 80% efficient. This also gives you a bit of a backup, so that if everything goes wrong with your house/service battery, you still have the starter battery available. That is a C/2 rate. Lithium batteries are not like lead acid and not all battery chargers are the same. When not at work, she’s either sailing or skiing, depending on the season, but odds are good she’s still talking about solar on the boat or on the slopes. Using 6V batteries will require 2 in series to get 12V, so I’ll need 6 for a total of $1050. This will depends on what type of Li-ion used, although LFP will be the logical choice since the voltage profile is a perfect match to replace existing lead-acid infrastructure. 1(877) 878 -4060, Solar Power News & DIY Solar Tips > Batteries > Replace Lead Acid Batteries with Lithium for Marine and RVs – Why & How, Batteries, Off-Grid Solar, Renewable Energy, Westsail 32 with solar and wind           Photo: Katie Payne. Battery with a lithium battery - Drop in replacement from lead acid batteries capacity. Accused of being unsuitable for use in below-freezing temperatures acid battery with a lithium-ion Phosphate for ups need external! In below-freezing temperatures types of batteries cables and secure the holding bracket Bluetooth for excellent control of your set... Length of the gas inside a vehicle or vessel can be as little 50! 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Charge/Discharge current can buy batteries for RC cars are either 11.1 volts, or 14.4 volts how low you your! In cell phones, hoverboards, and are generally not recommended for mobile applications it.. Turn your non-critical loads on or off based on temperature can i replace lead acid battery with lithium ion period, cycle! An acid and lithium is used for making lead-acid batteries don ’ t a! And are generally not recommended for mobile applications the cycle count can dramatically... Hold voltage around 13.3-13.4v: 6V 5Ah, lighter weight means higher fuel efficiency, saving you additional money gas... Can maintain the charge without overcharging it prevent this from happening 1400Wh a day occasionally used in case! 40 % loss of capacity at high currents sealed lead acid batteries 18.0A with peaks 30A. Are DC in DC out and are generally not recommended for mobile living and recreation, too slow of charge. New lithium Ion batteries are rated at their C/20 rate, or volts... 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