Custom LiFePo4 Battery Packs

A Cell Chemistry for LiFepo4 (lithium iron phosphate）

Lithium iron phosphate (LiFePO4) is recognized as one of the safest and most durable lithium battery chemistries available today. This highly sought-after technology offers customers across various markets a safer and longer-lasting alternative to NMC-based cells. With a remarkable cycle life that can extend into the thousands and exceptional performance across a wide temperature range, it’s clear why LiFePO4 is the ideal choice for specific projects and applications, including custom solar-powered lithium battery solutions.

Your Custom LiFepo4 (lithium iron phosphate) Battery Pack Manufacturer

We understand that undertaking the production of custom lithium iron phosphate batteries is a complex challenge for OEM customers, involving many details that need to be managed. In every communication, we emphasize trust and transparency, helping you develop a comprehensive plan from project initiation to final mass production.

Our Custom Battery Pack Process

With more than a decade of experience in battery design, TASSKOOD Battery Technologies provides a comprehensive solution and swift project management for all aspects of battery pack design and manufacturing.

Your Proposal

Our plan is dedicated to presenting comprehensive, in-depth and carefully considered information to you and your team, enabling you to clearly understand every detail of the custom battery pack solution and the outcome we will bring to you. Starting from the ultimate vision of the project, we deeply discuss the implementation scope, time schedule, delivery milestones and other related services, so that your entire team can make scientific and reasonable decisions. Our meticulous preparation in the early stage is the cornerstone for the efficient and smooth progress of the project.

Your Project

Each project we win brings us pride. A specialized project manager directs the development of your unique battery pack design from concept through to manufacturing. Together with your team, we address DFMEA, design drawings, PFMEA assessments, PPAP documentation, sampling, tooling, certifications, testing, and manufacturing improvements.

Your Product

With our strong manufacturing capabilities, we deliver dependable and repeatable battery solutions. We guarantee on-time deliveries and maintain flexible stock levels for components and finished products to meet your requirements.

How the factory helps customers complete battery pack development projects ?

Technical Support and Consultation:

Material Selection: Factories should provide professional advice based on the client’s application requirements (such as energy density, power output, and temperature range) to help them choose the most suitable battery chemistry, such as lithium-ion, lead-acid, or solid-state batteries.
Design Guidance: During the battery pack design phase, factories can assist clients in designing the battery pack structure, including the arrangement of individual cells, cooling system design, and selection of enclosure materials to optimize thermal management and mechanical strength.
Battery Management System (BMS): Factories can help clients develop or select an appropriate battery management system to ensure safe and reliable charging and discharging processes while monitoring the battery’s status to extend its lifespan.

Sample Testing and Validation:

Performance Testing: After sample production, factories should conduct a series of rigorous tests, including cycle life testing, charge and discharge efficiency testing, and short-circuit/overcharge protection testing, to ensure samples meet the client’s performance standards.
Environmental Adaptability Testing: Samples should be tested for performance under various environmental conditions, such as high temperatures, low temperatures, and humidity, to ensure the battery pack’s stability and reliability in diverse usage scenarios.
Certification Support: Factories can help clients prepare necessary documentation and samples to assist in obtaining various certifications (such as CE, UL, UN38.3, etc.), ensuring the product meets market entry requirements.

Flexible Production Capacity:

Customized Production: Factories should offer customized production services based on the client’s specific needs and order quantities, ensuring the battery pack fully meets the client’s design and functional requirements.
Capacity Adjustment: Factories should have flexible production lines to quickly scale up production capacity during peak demand periods, ensuring timely delivery and avoiding delays due to insufficient production capacity.
Rapid Prototyping: Through rapid prototyping, factories can help clients quickly validate design concepts during the early stages of development, accelerating time to market.

Ongoing After-Sales Service:

Technical Training: Factories should provide training for the client’s technical team to ensure they can effectively use and maintain the battery packs and understand common problem-solving techniques.
Maintenance and Support: Establish a comprehensive after-sales service system that offers regular inspections and maintenance services, helping clients monitor battery pack performance and promptly address potential issues.
Feedback Mechanism: Set up feedback channels to encourage clients to share their experiences and improvement suggestions, with factories actively responding and continuously improving products to enhance customer satisfaction.

View all our services

Frequently Asked Questions About LiFepo4 Battery

What are the advantages of LiFePO4 battery?

Sure! Here are the advantages of LiFePO4 batteries in a more concise format:

Safety : Lower risk of combustion and good thermal stability.
Long Cycle Life : Can last 2000-3000 charge cycles with minimal degradation.
High Discharge Rates : Suitable for applications requiring quick power bursts.
Environmentally Friendly : Non-toxic materials that are safer for the environment.
Stable Voltage : Provides consistent performance throughout the discharge cycle.
Wide Temperature Range : Operates effectively in various temperatures.
Low Self-Discharge Rate : Retains charge for extended periods when not in use.
Cost-Effective : Long lifespan and low maintenance costs lead to overall savings.

These benefits make LiFePO4 batteries ideal for renewable energy, electric vehicles, and portable power applications.

What are the disadvantages of LiFePO4 battery?

Here’s the translation of the disadvantages of LiFePO4 batteries:

1. Lower Energy Density : Compared to other lithium-ion batteries, LiFePO4 has a lower energy density, meaning it stores less energy for the same weight, which can limit range and capacity in applications like electric vehicles.

2. Larger Size and Weight : Due to their lower energy density, LiFePO4 batteries tend to be bulkier and heavier, making them less ideal for applications where space and weight are critical.

3. Higher Initial Cost : While they can be cost-effective over time, the initial purchase price of LiFePO4 batteries is often higher than other battery types.

4. Temperature Sensitivity : Although they perform well in a wide temperature range, performance can degrade significantly at very low temperatures, affecting efficiency and capacity.

5. Limited Availability : Compared to more common lithium-ion chemistries, LiFePO4 batteries may not be as widely available or supported in the market.

6. Lower Voltage : The nominal voltage of LiFePO4 cells (around 3.2V) is lower than that of other lithium-ion batteries, which may require more cells in series to achieve the desired voltage in certain applications.

These disadvantages can influence the choice of battery technology depending on specific application needs.

Does a LiFePO4 battery take a special charger?

Yes, LiFePO4 batteries typically require a specialized charger designed for their specific chemistry. Here are some key points regarding charging:

1. Charge Voltage : LiFePO4 batteries have a different nominal voltage (around 3.2V per cell) compared to other lithium-ion batteries (usually around 3.7V per cell). Therefore, chargers need to be calibrated to the appropriate voltage levels for LiFePO4 cells.

2. Charging Profile : The charging profile for LiFePO4 batteries usually follows a constant current (CC) and constant voltage (CV) method, similar to other lithium-ion batteries, but with specific voltage limits to avoid overcharging.

3. Compatibility : Using a charger not designed for LiFePO4 can lead to inadequate charging, reduced performance, or even damage to the battery.

4. Built-in Battery Management System (BMS) : Many LiFePO4 batteries come with a built-in BMS that can help manage charging and discharging, but it’s still essential to use a compatible charger to ensure optimal safety and performance.

In summary, it’s important to use a charger specifically designed for LiFePO4 batteries to ensure safe and effective charging.

Do LiFePO4 batteries last longer?

Yes, LiFePO4 (lithium iron phosphate) batteries tend to have a longer lifespan compared to other lithium-ion batteries. They typically offer more charge cycles—often around 4,000 to 5,000 cycles—while maintaining a good level of capacity. This longevity is due to their stable chemistry, which reduces the risk of overheating and degradation over time. Additionally, they have a lower self-discharge rate, which also contributes to their durability.

what different series of lifepo4 battery ?

LiFePO4 batteries come in several series or configurations, primarily based on their voltage and capacity. Here are some common series:

1. 18650 Series :
– Commonly used in laptops and power tools.
– Cylindrical shape with a nominal voltage of 3.2V per cell.

2. 26650 Series :
– Larger than the 18650, offering higher capacity.
– Typically used in electric vehicles and larger energy storage applications.

3. Pouch Cells :
– Flexible packaging that allows for various shapes and sizes.
– Often used in applications requiring lightweight batteries, such as drones and electric bikes.

4. Prismatic Cells :
– Rectangular shape, often used in electric vehicles and stationary energy storage.
– Provides a higher energy density in a compact form.

5. Rack-Mounted Systems :
– Integrated battery systems for commercial and industrial applications.
– Often used for energy storage solutions and backup power.

6. Drop-In Replacements :
– Designed to replace lead-acid batteries in existing systems, such as RVs and golf carts.

Each series has its own advantages and is suited for different applications, depending on factors like space, weight, and energy needs.

Do LiFePO4 battery degrade if not used?

Yes, LiFePO4 batteries can degrade if not used for an extended period, although they generally have a lower self-discharge rate compared to other lithium-ion batteries. If left unused, they may still lose capacity over time due to factors like:

1. Self-Discharge : While they discharge more slowly, they still lose charge naturally.

2. Temperature High temperatures can accelerate degradation, while extremely low temperatures can also affect performance.

3. State of Charge : It’s best to store them at a partial state of charge (around 50%) rather than fully charged or completely depleted.

4. Age : Even when not in use, batteries can age, leading to reduced performance over time.

To prolong their lifespan, it’s a good idea to periodically check and recharge them if necessary.

Are lifepo4 batteries safe ?

LiFePO4 (lithium iron phosphate) batteries are generally considered safe, and here’s why:

1. Thermal Stability
– LiFePO4 batteries have excellent thermal stability. The chemical structure of LiFePO4 is such that it is less likely to experience thermal runaway, a dangerous condition in which a battery overheats and can lead to fire or explosion. During normal operation and even under some abnormal conditions such as overcharging or short – circuiting, the heat generation in LiFePO4 batteries is relatively limited. For example, compared to lithium – cobalt – oxide (LiCoO₂) batteries, LiFePO4 batteries are more resistant to temperature – induced disasters.

– The operating temperature range of LiFePO4 batteries is also relatively wide. They can function well in a broad temperature range from – 20°C to 60°C. This stability means that they are less affected by extreme temperatures, reducing the risk of safety – related issues caused by temperature fluctuations.

2. Chemical Stability
– The chemical composition of LiFePO4 batteries makes them more stable during the charge – discharge cycle. The lithium – iron – phosphate cathode material has a stable structure that doesn’t change as drastically as some other cathode materials. This stability helps prevent the formation of dangerous by – products during battery operation.

– There is a lower risk of lithium dendrite formation. Lithium dendrites are needle – like structures that can form during the charging process and potentially lead to internal short – circuits. In LiFePO4 batteries, the likelihood of dendrite formation is relatively low, enhancing the safety of the battery.

3. Overcharge and Over – Discharge Protection
– Most LiFePO4 battery management systems (BMS) are designed to provide protection against overcharging and over – discharging. The BMS monitors the battery voltage and current, and when the battery reaches a critical charge or discharge level, it will cut off the charging or discharging circuit. This built – in protection mechanism significantly reduces the risk of damage to the battery due to improper charging or discharging, which could otherwise lead to safety hazards.

However, it’s important to note that no battery is completely without risk. Mishandling such as physical damage (e.g., puncturing, crushing), using a non – compliant charger, or improper installation can still pose a safety threat to LiFePO4 batteries.

what are Lifepo4 batteries used for ?

LiFePO4 batteries are used in a variety of applications due to their safety, longevity, and stability. Some common uses include:

1. Electric Vehicles (EVs) : Widely used in electric cars, bikes, and scooters for their high energy density and safety.

2. Renewable Energy Storage : Ideal for storing energy from solar panels and wind turbines, helping to balance supply and demand.

3. Backup Power Systems : Used in uninterruptible power supplies (UPS) and off-grid power systems to provide reliable backup power.

4. Portable Power Stations : Common in camping and outdoor equipment, providing reliable energy for appliances and devices.

5. Power Tools : Found in cordless power tools, providing longer run times and quick recharging.

6. Medical Devices : Used in some medical equipment where reliable power supply is critical.

7. Electric Buses and Trucks : Gaining popularity in commercial transportation for their efficiency and safety.

8. Recreational Vehicles (RVs) : Used for powering appliances and systems, offering a lightweight and long-lasting solution.

9. Drones Common in UAVs for their lightweight and stable power supply.

These batteries are favored in applications where safety and longevity are critical considerations.

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We design and manufacture custom battery packs for volume manufacturing projects.

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