can i replace lead acid battery with lithium ion

But when you consider cycle counts (1200 for the AGM and 5000 for the lithium), the lithium battery bank will last 4x longer than the AGM bank. Reading the maintenance tips … There are a few ways to prevent this from happening. Normal battery safety measures should be followed, like checking for tight cable connections, corrosion, and preventing physical damage to the battery itself. 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. 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. The outgassing of the battery is normal, but requires owners to regularly check to see when the electrolyte level gets low from the outgassing. Most batteries are rated at their C/20 rate, emptying the battery in 20 hours. Easy lithium drop-in replacement battery for lead acid battery. We are estimating that the lead-acid batteries will be replaced 3 times over a 10 year period, the lifespan of 1 lithium battery. batteries for RC cars are either 11.1 volts, or 14.4 volts. Explain how lithium batteries work in electric golf carts. Lead-acid batteries don’t fare as well since it can take up to 10 hours for them to charge fully safely. But since alternators are not designed to run at full speed for long periods, this can result in the alternator working too hard, overheating, and damaging itself. 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. I’ll be removing my current battery bank consisting of 4 Interstate 6V golf cart type lead-acid batteries and replacing them with 3 of the new Safari UT batteries. 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. By installing a DC-to-DC converter between the alternator and the lithium battery bank, you can limit the amount of current the battery draws from the alternator. However, while you can run your loads in freezing temperatures, you cannot charge a lithium battery in sub-freezing temperatures (below 32°F or 0°C). I got this idea that I could maybe replace the heavy lead acid battery on my motorcycle with a lithium ion polymer battery. The following two tabs change content below. 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. 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. A battery's life cycle refers to the amount of times a battery can be fully charged and discharged before needing to be replaced. An automatic switch such as the Victron Energy Smart BatteryProtect can be configured via Bluetooth for excellent control of your system. A typical lithium battery can have 5000+ cycles at up to 80% DoD. Unlike lead acid, lithium batteries don’t have a cycle curve under 80% DoD. During normal charging cycles, this mixture turns into a gas that needs to be vented outside. 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. Different batteries will have different preferences, so be sure to see the manufacturer’s recommendations when configuring your charger. Let’s look at some cost examples when designing a battery bank for a 12V system that uses 1400Wh a day. However, there are some things you need to know first before making the transition. Obviously, abusing any type of battery can create a dangerous situation. When you charge lead acid batteries, you can lose anywhere from 10% - 50% of the energy from the charger to your batteries. 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. Most manufacturers recommend no more than a C/2 rate on a regular basis for best battery life, but it is good to know the extra power is there with lithium batteries if you need it. Your battery will last at least twice as long if you regularly discharge it 25% than if you regularly discharge it 50%. LiFePO4 Battery: 6V 5Ah (30Wh, 10A rate) - Replace SLA 6V 5Ah, lighter weight - UN38.3 Passed. I’ll round up to 600Ah and use 3 MK Battery 4D 200Ah 12V batteries at $600 each for a total of $1800. So let’s again compare a 518Ah 12V lead acid battery bank with the 300Ah 12V lithium bank. Note: Unlike lead acid batteries, lithium batteries do not always need to be recharged to their full 100% capacity. 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 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. This is not a problem with lithium. The price gap between flooded lead acid and lithium is greater than with AGM. Not all of them are. As their names suggest, lead is used for making lead-acid batteries, while metal lithium is used for making lithium-ion batteries. You can replace the alternator with one designed for higher amperage charging and temperature control. 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. The MLS products have an integrated safety relay. It is recommended that you only draw from the alternator at half its rating, so for a 60A alternator, a 30A DC/DC converter like the Bluetooth-enabled Victron Energy Orion-Tr Smart 12/12-30A charger is a good option. based technology. 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). Replace Lead Acid Batteries with Lithium for Marine and RVs – Why & How. Lead acid batteries also perform best when charged at different rates based on temperature. Why Replace Lead Acid Batteries with Lithium in a Boat or RV? at 14.4V. Can you replace the lead acid battery with lithium? altE Store Watching more than just the voltage, but also how many amps go in and out of the battery bank and the temperature gives you a complete view of the health and state of charge of the entire bank. Using 6V batteries will require 2 in series to get 12V, so I’ll need 6 for a total of $1050. As a result, a lithium battery bank can be much smaller than a lead acid battery bank to provide the same amount of usable energy. The battery may look fairly similar to lead-acid batteries, but internally they’re a totally different (and much lighter). When it comes to performance in outdoor conditions, under very hot temperatures, lithium-ion batteries are truly maintenance-free. You will not need an external charger to charge your Lithium ion battery. On the other hand, DoD for lithium ion batteries is 80% or more, allowing you to use most or even all of the battery’s stored energy. Some lithium batteries can generally handle a C/1 rate, or even higher for short periods depending on the battery. A longer cycle life means an extended lifespan. Lead acid batteries tend to perform best between C/8 and C/12 rates. My battery died and I need to determine if the OEM battery (730 56029635AC) is a lead acid type or AGM type. But a poorly maintained flooded battery bank can quickly become a boat anchor in a year or two. Swapping out a lead acid electric bike battery for a Lithium Ion one. 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! Whereas lead acid can see as much as a 40% loss of capacity at high loads. Victron SmartShunt – Monitors Batteries via Bluetooth. That is a C/2 rate. Lithium batteries charge by receiving a steady supply of current until they are fully charged, then the charger cuts off. Simply remove the Lead-Acid Batteries and replace them with the Lithium iron phosphate Batteries and attach cables and secure the holding bracket. 1. Unlike some of the SLA Lead Acid batteries in the market, EEMB is using Li-ion pouch cells. Lithium Ion batteries are going to last you a lot longer than traditional Lead Acid. We’ve done our best to give an apples-to-apples comparison of these batteries based on their printed specs. Stay up-to-date on the latest solar power news, DIY solar tips, videos and much more. Its cycle life is more than 800 times, which is 2-4 times more than the SLA battery. It’s time. 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. These are charged from my 24 volt solar system. 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. Likewise, if you have a 50A load on the same battery, that would drain it in 2 hours  (100Ah ÷ 50A = 2 hours). Boxborough, MA 01719, © 1999 – 2019 Alternative Energy Store Inc. All Rights Reserved. Lithium batteries are also accused of being unsuitable for use in below-freezing temperatures. 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. You may be familiar with the voltage of your boat or RV’s battery bank sagging, or dropping to 11V or lower when trying to run a high-power load such as your winch, windlass, or air conditioner. At first glance, the lithium bank costs more than the AGM bank. This results in a Lithium Ion battery that is as close as possible to a ‘drop-in replacement’ for lead-acid, as long as the above considerations are kept in mind. 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 battery Battery Monitoring Systems have Bluetooth or WiFi built in to allow you to monitor it from the phone. Yes, you can replace your lead acid battery with a Lithium ion one. A battery’s specs will tell you how many cycles to expect from it when discharging to its rated DoD. Different battery chemistries have different risk factors. That is pretty significant if you ask me. A lead acid battery’s capacity is rated at 80°F (26°C), but the colder it gets, the more capacity falls. I have a 2019 all new 1500 limited with the 5.7 hemi. A 12v lithium LiFePO4 battery fully charged to 100% will hold voltage around 13.3-13.4v. After observing battery voltage gauge on my car, I can see my lead acid battery operate voltage is from 11.8v to 14.8v. She’s been a sales rep, an instructor, and an all around solar evangelist, sharing her passion for solar around the world. Safety is always a primary consideration when designing a solar system, but it becomes even more important when your system is on a boat far from shore, or an RV on a remote road. Flooded lead acid batteries have an acid and water electrolyte in the battery that has to be checked on a regular basis. If you cycle your battery bank every day for a year, that’s 365 cycles. It can also be viewed via BlueTooth. Lithium batteries do not have the CCA rating. Balmar makes great alternators and external regulators for this. A lithium battery can … 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. A lithium battery saves on your electric bill, as it is up to 96% efficient and accepts both partial and rapid charging. 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? Do i need an external charger ? 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. Depth of Discharge, or DoD, is how much of your battery bank’s stored energy can actually be used without dramatically reducing its life. In addition to how much of a battery’s capacity you use, it also matters how fast you use it. Replacing traditional lead-acid with Lithium Ion. Large lead-acid batteries are used everywhere, and people who want more power, capacity and life are replacing them with Lithium batteries. Even though their lifespan has been improved, Lithium-ion batteries still lack the power performance associated with “high rate” batteries used for pitch actuators. LCO batteries are most commonly used in cell phones, hoverboards, and electric cars, and are generally not recommended for mobile applications. When considering replacing an existing lead-acid battery bank by a Lithium Ion battery bank one needs to take a couple of things into consideration. 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