Custom LiFePo4 Battery Packs
ProMax is a custom LiFePo4 battery manufacturer in China, for 9+ years OEM ODM experience. We design and manufacture custom LiFe Po4 battery packs, let our batteries power your business success.
Technical Support
Engineering Team
What are LiFe Po4 custom battery packs?
Lithium iron phosphate (LiFePo4) batteries are considered the safest type of lithium battery because their chemical composition prevents the battery from overheating and catching fire in the event of a failure. The cathode material in LiFePo4 batteries is non-toxic and not harmful to health or the environment. Oxygen is tightly bound to the molecules, so there is no risk of the battery catching fire. It is chemically very stable, although the energy density has its drawbacks.
We can supply LiFePo4 in the following formats:
- Cylindrical
- Prismatic
- Polymer
But we are not limited to these chemistries alone, we are continuing to work on growing our knowledge database further and expanding our capabilities to accommodate any request.
How can we help you build the custom LiFePo4 battery packs?
With over 9 years of battery design experience, Promax offers a compelling package that combines exceptional LiFePo4 custom battery packs with a highly skilled engineering team and innovative design, service range from custom designed hard plastic housings to shrink-wrapped designs.
We take pride in delivering reliable, high-quality power solutions that can meet the demands of a wide range of applications.
Our engineers have the experience and expertise needed to design and optimize LiFePo4 custom battery packs that precisely match your requirements.
Our design implementation strategies include:
- Assess the customizability of the project as a whole first
- Project specific to each responsible engineer
- Good at problem solving, and course correcting
- Test demos and make notes to better customize the production process for mass production.
Our engineers and designers will work closely with you, as almost an extension of your own team to make sure there is a back-and-forth, which will ensure that you are happy with the designs and your requirements are met.
Gerneral Purchasing Process Guide:
- Inquiry: we need basic information about battery after communication back and forth, like cell size, voltage, working current, max working current, 3D case drawing, BMS information and others.It will be better if you send us battery sepecification.
- Quotation/Payment term/Derlivery term
- Samples Arrangement after quotation approval
- Samples Approval
- Placing order
- Arrange down payment
- Mass production
- Quality Testing by customers
- Arrange rest payment
- Delivery and clear custom in China
- Ship on Board
Get In Touch...
Our LiFePO4 Battery Packs
12.8V/6Ah LiFe Po4 Battery Pack
Specification:
- Max charging voltage: 14.6V
- Discharge Cut Off Voltage:10V
- Standard discharging current: 1.2A
- Maximum Continuous Discharge Current:6A
- Peak discharging current:18A (for 2-3s)
- Standard charging current:1.2A
- Max charging current:6A
- Charging temperature: 0°C ~ 45°C
- Discharging temperature: -20°C ~ 60°C
- Storage temperature: -20°C to 45°C
- Battery board: 4S 20A balanced BMS
- Weight: 900g
- Connection method: 5.5*2.1mm DC connector
- Size: about 130mm*33mm*72mm above
- Applications: Electric boats, uninterrupted network components, 12V car batteries, etc.
12.8V/12Ah LiFe Po4 Battery Pack
Specification:
- Model No:12.8V 4S2P 32700
- Lifepo4 battery pack
- Charging Voltage:12.8V
- Cut-off charging Voltage：14.4V
- Battery capacity：12Ah [25℃ 0.2C(2400MA) testing standard]
- Battry pack:4S2P (including 8pcs 32700 Life Po4 cells)
- BMS：4S2P 40A with BMS board
- Peak discharging current: 36A
- Continuouse discharging current:12A
- Connector：DC 5.5*2.1mm and XT60
- Size: about 140*106*72mm
- Max charging current:12A
- Charging temperature: 0°C ~ 45°C
- Discharging temperature: -20°C ~ 60°C
- Storage temperature: -20°C to 45°C
- Applications: Electric boats,UPS, 12V car batteries, etc.
12.8V/18Ah LiFe Po4 Battery Pack
Specification:
- Model No:12.8V 4S3P 32700
- Lifepo4 battery pack
- Charging Voltage:12.8V
- Cut-off charging Voltage：14.4V
- Battery capacity：18Ah [25℃ 0.2C(3600MA) testing standard]
- Battry pack:4S3P (including 12pcs 32700 Life Po4 cells)
- BMS：4S3P 50A with BMS board
- Peak discharging current: 50A
- Continuouse discharging current:18A
- Connector：DC 5.5*2.1mm and XT60
- Size: about 140*106*72mm
- Applications: Electric boats,UPS, 12V car batteries, etc.
- Max charging current:6A
- Charging temperature: 0°C ~ 45°C
- Discharging temperature: -20°C ~ 60°C
24V/18Ah LiFe Po4 Battery Pack
Specification:
- Battery type: 24V 18
- Battery Type: LiFePO4
- Battery
Nominal voltage: 25.6V - Cut-off Charging voltage: 29.2V
- Battery capacity: 18Ah [25℃ 0.2C (3600MA) standard test]
- Battery pack: 8S3P (24pcs 32700 Lifepo4 cells)
- BMS: 8S 50A balanced BMS
- Output voltage range: 20~29.2V
- Discharge cut-off voltage: 20±1V
- Maximum continuous output current: 18A
- Maximum instantaneous output current: 50A
- Standard charging: 9A
- Fast charge: ≤18A
- Charging temperature: -0~45°C
- Discharge temperature: -20~60°C
- Weight: about 3.7kg
- Size: 212*150*80mm
- Shell case: battery holder + PVC
- Application:
Suitable for electric bicycle batteries, electric scooters, electric boats, uninterruptible power supplies, solar lights, electric lawn mowers, electric wheelchairs, children’s toy cars, etc.
12.8V/100Ah LiFe Po4 Battery Pack
Specification:
- Max charging voltage: 14.4V
- Discharge Cut Off Voltage:10V
- Standard discharging current:50A
- Maximum Continuous Discharge Current:100A
- Peak discharging current:100A
- Standard charging current:50A
- Peak charging current:100A
- Charging temperature: 0°C ~ 45°C
- Discharging temperature: -20°C ~ 55°C
- Storage temperature: -10°C ~55°C
- Life Cycle time: 3000 times at least (at DoD 80%)
- Dimension (L x W x H): 330x172x215mm
- Output Connector: M8
- Plastic case: ABS
- Weight: about 13kg
- Application: Home Energy Storage, Marine, RV, Solar system, etc
12.8V /200Ah LiFe Po4 Battery Pack
Specification:
- Max charging voltage: 14.4V
- Discharge Cut Off Voltage:10V
- Standard discharging current:100A
- Maximum Continuous Discharge Current:100A
- Peak discharging current:200A
- Standard charging current:100A
- Peak charging current:200A
- Charging temperature: 0°C ~ 45°C
- Discharging temperature: -20°C ~ 55°C
- Storage temperature: -10°C to 55°C
- Life Cycle time: 5000 times at least (at DoD 80%)
- Dimension (L x W x H): 522x240x218mm
- Output Connector: M8
- Plastic case: ABS
- Weight: about 18.5kg
- Application: Home Energy Storage, Marine, RV, Solar system, etc
48V/50Ah LiFe Po4 Battery Pack
Specification:
- Max charging voltage: 58.4V
- Discharge Cut Off Voltage:40V
- Standard discharging current:25A
- Maximum Continuous Discharge Current:50A
- Peak discharging current:100A
- Standard charging current:25A
- Peak charging current:50A
- Charging temperature: 0°C ~ 55°C
- Discharging temperature: -20°C ~ 60°C
- Storage temperature: -10°C to 50°C
- Life Cycle time: Up to 3000 cycles (at DoD 80%)
- Plastic case: Steel case
- Application: E-motorcycle,AGV etc
72V/50Ah LiFe Po4 Battery Pack
Specification:
- Max charging voltage: 84V
- Discharge Cut Off Voltage:57.5V
- Standard discharging current:25A
- Maximum Continuous Discharge Current:50A
- Peak discharging current:100A
- Standard charging current:25A
- Peak charging current:50A
- Charging temperature: 0°C ~ 55°C
- Discharging temperature: -20°C ~ 60°C
- Storage temperature: -10°C to 50°C
- Life Cycle time: Up to 3000 cycles (at DoD 80%)
- Plastic case: Steel case
- Application: E-motorcycle,AGV,etc
60V/50Ah LiFe Po4 Battery Pack
Specification:
- Max charging voltage: 69V
- Discharge Cut Off Voltage:47.5V
- Standard discharging current:25A
- Maximum Continuous Discharge Current:50A
- Peak discharging current:100A
- Standard charging current:25A
- Peak charging current:50A
- Charging temperature: 0°C ~ 55°C
- Discharging temperature: -20°C ~ 60°C
- Storage temperature: -10°C to 50°C
- Life Cycle time: Up to 3000 cycles (at DoD 80%)
- Plastic case: Steel case
- Application: E-motorcycle,AGV,etc
Primatic Cells Used for LiFePo4 Battery Packs
- Voltage/capactiy: 3.2V/280Ah
- size:72X173.7X20.7.2mm
- Working temperature:-30°C~60°C
- max continuous charging current：1.0C
- max discharging continuous discharging:1C
- Cycle Life:5000 times
Cells brand and manufacturers from China:
- CATL
- EVE
- GUOXUAN
- CALB
- etc
Li-Polymer Cells Used for LiFoPo4 Battery Packs
- Voltage/capactiy: 3.2V/20Ah
- size:120mm x 194mm x 7mm
- Discharging temperature:-10°C~60°C
- max continuous charging current：1.0C
- max discharging continuous discharging current:3.0C
- Cycle life time: 3000 times
Cells brand and manufacturers from China:
- GreatPower
- etc
Cylindrical cell /3.2V Used For LiFe Po4 Battery Packs
- Voltage/capactiy: 3.2V/15Ah
- size:33.3mm x 140.5mm (D*H)
- Discharging temperature:-30°C~60°C
- max continuous charging current：3.0C
- max discharging continuous discharging current:1.0C
- Cycle life time: 2500 times
Cells Type:
- 18650
- 26650
- 32700
- C33
- C40 etc
Cylindrical cell list/3.2V
| Cylindrical cell list-3.2V LiFe Po4 | ||||||||||
| S/N | Product model No. | Voltage | Capacity（mAh） | Dimension（≤mm） | Max charging current | Max discharging current | IR (mΩ) | Weight (g) | Remark | |
| (V) | Thickness | Height | ≤ | ≤ | ||||||
| 1 | IFR18650-1600 | 3.2 | 1600 | 18.3 | 65.2 | 1C | 3C | 25 | 43 | |
| 2 | IFR18650-1800 | 3.2 | 1800 | 18.3 | 65.2 | 1C | 3C | 25 | 44 | |
| 3 | IFR26650-3400 | 3.2 | 3400 | 26.2 | 65.6 | 1C | 3C | 20 | 85 | |
| 4 | IFR26650-3600 | 3.2 | 3600 | 26.2 | 65.6 | 1C | 3C | 20 | 87 | |
| 5 | IFR26650-3800 | 3.2 | 3800 | 26.2 | 65.6 | 1C | 3C | 25 | 88 | |
| 6 | IFR26650-4000 | 3.2 | 4000 | 26.2 | 65.6 | 1C | 3C | 25 | 90 | |
| 7 | IFR26650-3000 | 3.2 | 3000 | 26.2 | 65.6 | 1C | 8C | 12 | 86 | |
| 8 | IFR26650-2500 | 3.2 | 2500 | 26.2 | 65.6 | 3C | 20C | 10 | 86 | |
| 9 | IFR26650-3600 | 3.2 | 3600 | 26.2 | 65.6 | 1C | 3C | 25 | 88 | LOW TEMP |
| 10 | IFR32700 | 3.2 | 6000 | 32.7 | 70.9 | 1C | 3C, max peak discharging current 5C | 8 | 142.4 | Discharge capacity of 2001th cycle,minimum capacity>80% at the temperature of 25±2℃ |
Discharging Capacity Curve After Different Discharging Rate- 32700/6000mAh
Discharging Capacity at different Temperature-32700/6000mAh
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For Photovoltaic Energy Storage
Battery For Forklift
Battery For Ship and Yachts
Replacement Battery For Wind Power Generation
Battery For Back up Power
Battery For Recreational Vehicle
The Battery Manufacturing Process
1. After the samples and battery specification are confirmed, we will start mass production soon after receiving the customer order and deposit.
2. Evaluate supplier, and test the quality of cell and PCM samples, till samples are approved.
3. Buy all the materials from the qualified supplier which are CE, ROHS,UKCA certified.
4. Spot-check cells capacity and fully check the voltage and internal resistance of cells before mass production.
5. Start mass production.
6. Fully check the battery quality during mass production, called IPQC.
7. After batteries are finished, fully check their performance, such as appearance, voltage, working current, over-working current, internal resistance etc. For the multiple battery pack, we add the life cycle testing before shipment.
8. Package and shipment.
Quality Inspection
Process during production
You can see the quality control details ,it shows how we control the battery quality and ensure battery quality stable.
IQC
When we receive incoming materials from our suppliers, we conduct spot-checks on samples to assess their quality. If the samples pass the quality inspection and meet our standards, we proceed to transfer them to our incoming materials warehouse. From there, our production team will retrieve the approved materials for trial orders and, subsequently, for mass production based on the specified order quantity.
However, if the spot-check reveals that the samples do not meet our quality requirements and are not approved, we will arrange to return these materials to our supplier. This ensures that we maintain high standards and only use materials that meet our quality criteria in our production processes.
IPQC
Before proceeding with trial orders or mass production, we follow a thorough process to ensure the quality of the cells used in our products. This involves spot-checking the capacity of the cells and conducting a comprehensive assessment of their performance, including outward appearance, voltage, and internal resistance. Only cells that meet our quality standards are allowed to move forward to the production line.
Any cells that are found to be non-compliant during the spot-check are identified as “NG batteries” (No Good) and are immediately removed from the production process. These rejected batteries are then returned to the supplier for further analysis and resolution.
Once the approved cells have been soldered with PCM (Protection Circuit Module), we subject the batteries to a rigorous performance check. This assessment includes evaluating voltage, internal resistance, and overcurrent capabilities, among other factors. This meticulous testing ensures that the batteries used in our products meet our high-quality standards and guarantees the reliability and safety of the final goods.
OQC
When the batteries are depleted, we will conduct a thorough assessment of their performance based on the specifications or drawings confirmed by the customer. This assessment includes inspecting the outward appearance, battery label, printing, wires or wire connectors, voltage, internal resistance, and over current protection. If all these parameters meet the required standards, we will proceed with packing the batteries into cartons.
However, if any of these aspects do not meet the specifications, the batteries will be returned to the Quality Control (QC) team for further analysis and necessary adjustments.
In the case of multiple battery packs, such as two cells in parallel, five cells in series, or a 2P6S battery pack, we will subject them to life cycle testing before shipping.
This testing involves simulating real-world usage conditions to evaluate the battery pack’s performance and durability over an extended period. Only those battery packs that pass the life cycle testing will be considered suitable for shipment.
Our commitment to quality assurance ensures that only reliable and fully compliant batteries are delivered to our customers.
After-sales service
Batterea.com offers after-sales services that go far beyond regular batteries and custom-made batteries. They are a comprehensive, continued service package for customers and the core of our company philosophy. Our members of staff are available to you anytime for all possible questions regarding our range of services.
A high level of customer satisfaction is our basis for successful long-term partnerships.
When you receive our battery, if there are any problems, no matter what the problem is, we will face them and reply to you with our solution as soon as possible.
The Shipping Process
Step 1
Design,Manufacturing and book for shipment
We buy the materials to meet your order requests, then start the mass production under our quality control. In the meantime, we will send UN38.3 documents to the forwarder for booking cargo space to avoid any delay.
Step 2
Packing the Boxes for Delivery,stick UN3480 on the carton
After production, our team will pack your order into cartons, stick UN3480 label on the carton.
Step 3
Customs Clearance and Loading
Once your order is packed, we load them onto vans and wait for them to be cleared by Customs.
Step 4
International Delivery
Once cleared, your order will then be shipped to you through international waters. You’ll receive a bill of lading in your email once the cargo is on board and a bill of lading by telex released when your shipment arrives.
FAQ's
Frequently ask questions
LiFePO4 batteries offer higher energy density, longer cycle life, and are generally lighter and more compact compared to lead-acid batteries.
LiFePO4 batteries are known for their enhanced safety profile due to the stability of the iron-phosphate chemistry, reducing the risk of thermal runaway and fire.
Yes, LiFePO4 batteries can typically be charged at higher voltages, allowing for faster charging times compared to lead-acid batteries.
LiFePO4 batteries generally have a longer lifespan, with the potential to exceed 2,000 charge cycles, depending on usage conditions.
Request for a quote today
Send us a message if you have any questions or request a quote. Our experts will give you a reply within 24 hours and help you select the right valve you want.
