Lithium Iron Phosphate Batteries
LiFePO4 (Lithium Iron Phosphate) batteries are a newer and more expensive technology that offers several advantages over AGM batteries. They are much lighter, have a longer lifespan, and are more efficient at storing and releasing energy. LiFePO4 batteries also have a higher cycle life, meaning they can be discharged and recharged more times without losing capacity. They are more expensive than AGM batteries but can be a better long-term investment.
Other advantages of lithium include:
- You can run them all the way down to under 20% charge with no (or minimal) ill effect as long as they are recharged in a timely fashion. While this is not recommended , it does not affect them in the same way it does traditional lead-acid batteries.
- You can let them sit unattended for long periods of time at partial SOC (State Of Charge) between 50-80%. They can sit like that for months with no ill effects, a lead-acid battery would probably be ruined or compromised under the same conditions (those generally need to be brought to full charge once a month).
- You can add new ones to old ones as long as they are in the same approved categories, usually same manufacturer, sometimes same size but not always. This is huge of course, allowing users to expand over time in a way you could never do with traditional lead-acid.
- You don't have to worry as much about cabling lengths between batteries for complicated reasons (a.k.a. the Peukert Effect).
- They generally have onboard computers these days (a.k.a. "internal BMS/Battery Management System") that take care of important things like not accepting charge below a certain temperature (there are also self-heating models now).
LG CHEMMSRP:Now: $7,299.00Was:LG HOME BATTERY CHEM - RESU16H-PRIME Part of the latest generation 3 series in the LG RESU line-up. The RESU16H Prime is the largest lithium-ion residential battery storage in the world, supplying a total energy capacity of 16 kWh. The latest...MSRP:Now: $7,299.00Was:
EnphaseMSRP:Now: $1,319.99Was:Enphase IQ Battery 3T Base Kit with one 1.28 kVA, 3.36 kWh,single phase battery unit with 4 integrated IQ8X-BAT Microinverters and backup feature 1*B03-T01-US00-1-3 and 1*B03T-C-0430-O are required to be ordered for an installable ENCHARGE-3T-1P-NA...MSRP:Now: $1,319.99Was:
SolarEdgeMSRP:Now: $6,729.00Was:SolarEdge Home Battery (UL Listed) SolarEdge Home Battery is designed to work with our award-winning SolarEdge Home Hub for more power, savings, and independence. Maximizes solar use year-round, and during an outage, with unique, DC-coupled...MSRP:Now: $6,729.00Was:
SolarEdgeSolarEdge Home Battery SolarEdge Home Battery is designed to work with our award-winning SolarEdge Home Hub for more power, savings, and independence. Maximizes solar use year-round, and during an outage, with unique, DC-coupled technology...
LG CHEMMSRP:Now: $5,709.99Was:LG Chem, 9.6kWh 420VDC, Lithium-Ion Battery, RESU10H-GEN3 (**Note: Must be installed by certified installer, read more about LG Chem installation requirements) Energy Storage System(ESS) stores electric energy and utilize them for later...MSRP:Now: $5,709.99Was:
LifeBlueMSRP:Now: $2,111.00Was:LiFeBlue Battery 12 Volt, 300AH Low Temp Model LB12300D-LT Lithium Iron Phosphate (LiFePO4) Description LiFeBlue Low Temperature batteries use our latest Lithium Iron Phosphate (LFP or LiFePO4) prismatic cells. Charging any...MSRP:Now: $2,111.00Was:
LifeBlueMSRP:Now: $1,549.00Was:LiFeBlue Battery 12 Volt, 200AH Low Temp Model LB12200D-LT Lithium Iron Phosphate (LiFePO4) Description LiFeBlue Low Temperature batteries use our latest Lithium Iron Phosphate (LFP or LiFePO4) prismatic cells. Charging any Li-ion battery...MSRP:Now: $1,549.00Was:
LifeBlueLiFeBlue Battery 12 Volt, 200AH Model LB12200D Lithium Iron Phosphate (LiFePO4) Description The LB12200D is ideal for deep cycle energy storage in recreational vehicles (RV) and boats. With our high current BMS design, a...
LifeBlueMSRP:Now: $839.00Was:LiFeBlue Battery 12 Volt, 100AH Low Temp Model LB12100D-LT Lithium Iron Phosphate (LiFePO4) Description LiFeBlue Low Temperature batteries use our latest Lithium Iron Phosphate (LFP or LiFePO4) prismatic cells. Charging any Li-ion...MSRP:Now: $839.00Was:
LifeBlueMSRP:Now: $2,239.00Was:LiFeBlue Battery 12 Volt, 300AH Model LB12300D Lithium Iron Phosphate (LiFePO4) Description The LB12300D is ideal for deep cycle energy storage in recreational vehicles (RV) and boats. With our high current BMS design, a single battery can supply...MSRP:Now: $2,239.00Was:
LifeBlueMSRP:Now: $680.00Was:LiFeBlue Battery 12 Volt, 100AH Model LB12100D Lithium Iron Phosphate (LiFePO4) The LB12100D is ideal for deep cycle energy storage in recreational vehicles (RV) and boats. In addition to RV and Marine use, it is well suited for all...MSRP:Now: $680.00Was:
Rich SolarMSRP:Now: $1,319.00Was:Rich Solar Alpha 5 Server Lithium Iron Phosphate Battery 7,000 Cycles. LiFePO4 Lithium Battery. 20 Year Lifespan. RICH SOLAR 48V 100Ah lithium iron phosphate battery (Alpha 5 Server) has a much longer cycle life capacity, and...MSRP:Now: $1,319.00Was:
Frequently Asked Questions About Lithium Iron Phosphate Batteries
A1: A lithium iron phosphate (LiFePO4) battery is a type of rechargeable battery that is made up of lithium iron phosphate cells. It is commonly used in various applications, including solar systems, electric vehicles, and backup power systems. 12 volt, 24 volt and 48 volt models are available. All lithium batteries must have a Battery Management System (BMS) of some kind. There are two types of BMS, external and internal. All the SolarTown lithium models sold on our website have an internal BMS that is built into the battery.
A2: The advantages of using a lithium iron phosphate battery include high energy density, long cycle life, low self-discharge rate, fast charging capability, long term expandability, and excellent thermal stability. It is also safer and more environmentally friendly than other types of lithium-ion batteries.
A3: The lifespan of a lithium iron phosphate battery depends on several factors, including the quality of the battery, the number of charge and discharge cycles, and the operating conditions. Generally, a high-quality LiFePO4 battery can last up to 10 years or more with proper care and maintenance.
A4: To maximize the lifespan of a LiFePO4 battery, it should be stored in a cool and dry place. Install or store away from direct sunlight, moisture, extreme cold, and heat sources. All loads should be disconnected. It should also be stored at a partial state of charge, ideally around 50% to 60% of its maximum capacity. Check with the battery manufacturer for specific recommendations.
A5: Yes, a LiFePO4 battery can be overcharged, which can cause damage to the battery and reduce its lifespan. It is recommended to use a BMS that can prevent overcharging and ensure the battery is charged within its safe operating limits.
A6: A LiFePO4 battery can be charged using a compatible charger that is designed for LiFePO4 batteries. It is important to follow the manufacturer's recommendations for charging, including the charging voltage and current, to avoid damaging the battery.
A7: The depth of discharge (DOD) for a standard LiFePO4 battery can vary depending on the specific model and manufacturer of the battery, but typically a DOD of 80% is considered safe and acceptable for this type of battery. This means that the battery should not be discharged below 20% of its rated capacity.
It's worth noting that deep discharging a LiFePO4 battery beyond its safe DOD can cause damage to the battery and reduce its overall lifespan. To ensure the longest lifespan of your LiFePO4 battery, it is recommended to avoid deep discharging as much as possible and recharge the battery before it reaches its safe DOD. If it does become fully discharged, the BMS will shut the battery down to prevent damage. In these extreme cases, the battery must be recharged via an external source like a DC charger, standard solar charge controllers or inverter/chargers will not work. Be sure to recharge a dead battery within 72 hours as best practice.
A8: Yes, a LiFePO4 battery can operate in extreme temperatures, both hot and cold. However, extreme temperatures can affect the battery's performance and lifespan, so it is important to monitor the battery and take appropriate precautions, such as using a battery enclosure or insulation. Lithium batteries should not be charged at temperatures below freezing, although they can be discharged. All the models we sell have BMS systems that prevent charging when temperatures are below freezing. Some batteries have self-heating options to mitigate this issue.
A9: Yes, a LiFePO4 battery is considered safe and stable, with a lower risk of thermal runaway and fire compared to other types of lithium-ion batteries. However, like any battery, it can be dangerous if mishandled or damaged, so it is important to follow proper handling and safety procedures.
A10: Unlike traditional lead-acid batteries, you can add new LiFePO4 batteries to old ones. As long as you are adding the same brand and model of battery, this can generally be done, within manufacturer specifications. Typically there are limits to the total number of series or parallel connections that can be made. Some manufacturers allow batteries of different sizes to be used together in a bank, but always confirm this with the manufacturer.
A11: Yes, there are. Per United States Department of Transportation and United Nations regulations, LiFePO4 Batteries are classified as Class 9 dangerous goods and come under UN3480 shipping and handling rules. As a result there are special shipping requirements and costs associated with these products. All shipments must comply with 49 CFR and IATA Regulations. Dangerous goods ground shipments are limited to 70 pounds per package. Batteries in excess of 70 pounds must ship by LTL Freight. There are no guaranteed delivery times for dangerous goods shipments. Your order may be held up by the carrier for any reason.
We only ship to the 48 contiguous States. Shipments to Alaska, Hawaii or other US territory must be by Air Cargo or by using a freight forwarding service. These services are at additional costs to the buyer. We are restricted from shipping batteries through USPS which excludes delivery to any APO and FPO or any post office box address. Battery shipments may not be sent to any mail forwarding companies, such as The UPS Store, unless they are certified to handle dangerous goods shipments. The customer is required to unload the battery or pallet from the truck. We recommend that you have a loading dock or forklift available. Any additional fees charged by the carrier, such as residential delivery, lift-gate delivery, inside delivery etc., that are not specified or requested when ordering will be the responsibility of the receiving customer. Please notify us when ordering if a lift gate or other service is required.
We do not offer expedited shipping service. All international shipments must be shipped in Air Cargo Only aircraft and may have country or area restrictions. Please contact us for a quote.
Credit card processors will no longer refund the process fee. If you cancel an order after payment has been processed, the 2.9% fee will be deducted from your refund. If you cancel after the order has been shipped, all shipping related costs will be deducted from your refund.