Prismatic Form Factor
Rectangular cells can simplify pack layouts and help use available enclosure volume efficiently in larger battery systems.
Lithium iron phosphate battery cells
LiFePO4 Prismatic Cells
Explore LiFePO4 prismatic cells for custom battery packs, energy storage and industrial battery systems. Compare lithium iron phosphate cell capacities and formats while planning pack voltage, energy, current, BMS and mechanical requirements.
LiFePO4 cell technology
What Are LiFePO4 Prismatic Cells?
LiFePO4 prismatic cells are rechargeable lithium iron phosphate battery cells built in a rectangular format. Their shape makes them suitable for battery systems where efficient use of enclosure space, modular pack construction and larger individual cell capacities are important.
A typical LiFePO4 prismatic cell has a nominal voltage of approximately 3.2 volts. Multiple cells can be connected in series to increase system voltage and in parallel when additional capacity or current capability is required.
Final pack performance depends on the specific cell, operating current, temperature range, mechanical installation, battery management system and manufacturer specifications.
3.2V Nominal Cell Voltage
LiFePO4 chemistry commonly uses a nominal cell voltage around 3.2V, with pack voltage determined by the number of cells connected in series.
Modular Pack Design
Prismatic cells can be arranged into modules and battery packs for energy storage, industrial systems and other higher-capacity applications.
Application-Specific Engineering
Cell capacity, current rating, dimensions, compression, BMS and thermal conditions should be matched to the intended application.
Capacity selection
How to Choose LiFePO4 Prismatic Cell Capacity
Prismatic LiFePO4 cells are available in a range of amp-hour capacities. The correct capacity depends on required runtime, pack voltage, current demand, physical size, system energy requirements and the number of cells used in parallel.
A higher amp-hour rating does not automatically make one cell better than another. The appropriate choice depends on the complete pack design and the electrical and mechanical limits of the application.
Compact LFP Systems
Suitable for projects where moderate capacity and a smaller prismatic cell format fit the required package.
Mid-Capacity Packs
Useful for battery systems that need additional stored energy while maintaining a modular prismatic architecture.
High-Capacity Systems
Larger-capacity cells can reduce the number of parallel cells needed in high-energy battery pack designs.
Energy Storage Applications
Large prismatic cells are often considered for energy storage and other systems requiring substantial capacity per cell.
Battery configuration
LiFePO4 Series Configuration and Pack Voltage
LiFePO4 cells can be connected in series to build battery packs with higher operating voltage. The examples below use a nominal cell voltage of approximately 3.2V and are provided as general configuration references.
4S
Approximately 12.8V nominal
8S
Approximately 25.6V nominal
12S
Approximately 38.4V nominal
16S
Approximately 51.2V nominal
Actual charge limits, operating limits and pack specifications must follow the datasheet and recommendations for the exact LiFePO4 cell being used.
Chemistry comparison
LiFePO4 vs. NMC Lithium-Ion Cells
LiFePO4 and NMC are different lithium-ion chemistries with different electrical, thermal and packaging characteristics. The appropriate choice depends on the priorities of the battery system rather than a single specification.
Design factor
LiFePO4
NMC
Nominal cell voltage
Approximately 3.2V
Commonly around 3.6–3.7V
Pack architecture
Often used in prismatic modular systems
Common in cylindrical, pouch and prismatic systems
Energy-density priority
Often selected when other system priorities outweigh
maximum energy density
Often selected where higher energy density is important
Selection approach
Evaluate cycle life, current, size and application requirements
Evaluate energy density, current, size and application requirements
Mechanical installation
Prismatic Cell Compression and Pack Structure
Prismatic-cell battery systems should be mechanically designed according to the exact cell manufacturer's specifications. Cell dimensions, terminal design, mounting, insulation, busbars, enclosure structure and any compression requirements need to be considered together.
Mechanical loading or compression should not be guessed from general guidance. The appropriate method depends on the cell model and manufacturer requirements.
Cell spacing
Allow for insulation, tolerances and the requirements
of the cell design.
Busbars
Size conductors and connections for the expected current
and pack architecture.
Enclosure
Provide mechanical protection appropriate for the
intended environment.
Temperature
Account for the cell's approved operating and storage
temperature ranges.
Protection and monitoring
Battery Management Systems for LiFePO4 Packs
A rechargeable LiFePO4 battery pack commonly requires a battery management or protection system matched to the number of series cells, charging limits, current requirements and operating environment.
The BMS should be selected for the exact pack configuration rather than treated as a generic accessory.
Learn about battery management systems
Cell voltage monitoring
Monitor cell-group voltage against appropriate operating limits.
Charge protection
Use charging limits appropriate for the selected LiFePO4 cell.
Current protection
Match continuous and peak-current limits to the pack design.
Temperature monitoring
Monitor operating temperatures when required by the application.
Applications
Applications for LiFePO4 Prismatic Cells
LiFePO4 prismatic cells can be considered for battery systems where larger individual cell capacity, modular construction and application-specific pack engineering are useful.
Battery engineering
Need Help Selecting or Integrating LiFePO4 Prismatic Cells?
Provide your target voltage, required capacity, continuous current, peak current, dimensions, application and expected production volume so the battery requirements can be reviewed.
Frequently asked questions
LiFePO4 Prismatic Cell FAQ
What is the nominal voltage of a LiFePO4 prismatic cell?
LiFePO4 cells commonly have a nominal voltage of approximately
3.2V. Exact operating and charge limits should always be taken
from the datasheet for the specific cell model.
How many LiFePO4 cells are needed for a 12V battery?
A common nominal configuration is 4 cells in series, producing
approximately 12.8V nominal when using 3.2V LiFePO4 cells.
The exact pack design must match the required operating and
charging limits.
How many LiFePO4 cells are needed for a 48V-class battery?
A common LiFePO4 configuration is 16 cells in series,
producing approximately 51.2V nominal. System requirements
and the exact cell datasheet should determine the final
configuration.
What does Ah mean on a LiFePO4 prismatic cell?
Amp-hours describe electrical capacity. A higher Ah value means
the cell can store more charge, but battery-system selection
should also consider voltage, current capability, dimensions,
cycle requirements and operating conditions.
Can LiFePO4 prismatic cells be connected in parallel?
Cells may be used in parallel when the battery system is
engineered appropriately. Cell matching, interconnect design,
protection and manufacturer requirements should be considered
before finalizing a parallel configuration.
Do LiFePO4 prismatic cells need a BMS?
Rechargeable LiFePO4 battery packs commonly use a BMS or
other protection electronics appropriate for the chemistry,
series count, current and application requirements.
Do LiFePO4 prismatic cells need compression?
Mechanical requirements vary by cell model and manufacturer.
Any compression, restraint or mounting method should follow
the technical requirements for the exact cell rather than
a generic value.
How do I choose between LiFePO4 and NMC cells?
Compare the requirements of the complete battery system,
including voltage, energy, current, cycle life, thermal
conditions, dimensions, weight and application-specific
constraints.
BUILT FOR YOUR NEEDS
Custom battery packs provide a level of precision and compatibility unmatched by off-the-shelf options. Whether you need a unique configuration for medical devices, industrial machinery, or consumer electronics, we deliver. Our team of experienced battery engineers will work closely with you to design and manufacture batteries that meet your specific voltage, capacity, and size requirements.
Reliable and Efficient Performance
Our custom battery packs maximize energy output, reduce downtime, and enhance the overall performance of your devices. Each pack is engineered with precision to meet specific voltage, capacity, and size requirements, ensuring optimal performance for every application.
Flexible 18650 Battery Pack Design
One of the most versatile solutions we provide is the 18650 battery pack. Known for high energy density and durability, 18650 cells are ideal for industrial equipment, consumer electronics, and renewable energy systems. Our expertise ensures your custom battery pack exceeds expectations, even for the most complex projects.
Prioritizing Safety in Every Design
Safety is a top priority in every battery we manufacture. Each custom pack includes advanced safety features, such as:
- Overcharge protection
- Thermal management
- Short-circuit prevention
- Over-discharge and over-current safeguards
All packs undergo rigorous testing and comply with UL, CE, and CQC certifications, guaranteeing reliability and safety for your applications worldwide.
Industries We Serve
Custom battery packs serve many industries, addressing diverse energy needs with precision and reliability.
Medical Devices
Medical Devices
Our custom battery packs are designed to power life-saving devices like portable ventilators, defibrillators, and diagnostic tools.
Consumer Electronics
Consumer Electronics
Whether you’re developing wearable devices, smart home technology, or portable gadgets, our custom configurations deliver superior power and reliability.
Renewable Energy Systems
Renewable Energy Systems
From solar energy storage to wind turbine power systems, our solutions provide the reliability and efficiency needed to optimize energy harnessing and usage.
Electric Vehicles (EVs)
Electric Vehicles (EVs)
Voltaplex specializes in creating custom lithium battery packs tailored to the needs of EVs, ensuring exceptional performance and extended range.
Request Your Custom Battery Pack
Voltaplex Energy is ready to design and manufacture battery packs tailored to your specifications. Whether you need a standard 18650 configuration or a fully customized lithium-ion solution, our team will create a reliable, high-performance battery pack designed to power your products safely and efficiently.
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