Electric pallet trucks are widely used in warehouses, distribution centers, factories, supermarkets, and logistics facilities. These machines move palletized goods across short and medium distances and require a battery that can provide stable power, support repeated operation, and fit the available battery compartment.
As more businesses move from lead-acid batteries to lithium battery systems, the demand for custom pallet truck lithium batteries continues to grow. Lithium batteries can be designed for different voltage levels, operating schedules, charging methods, battery compartments, and communication systems.
However, selecting a suitable battery is not only a matter of choosing a voltage and capacity. The battery must work with the pallet truck’s motor, controller, charger, display, and mechanical structure. Battery chemistry, discharge current, BMS programming, thermal management, and production quality also affect the final performance.
This guide explains how to select and develop a custom pallet truck lithium battery through an OEM/ODM process.
Part 1.What Is a Pallet Truck Lithium Battery?
A pallet truck lithium battery is a rechargeable battery pack designed to power an electric pallet truck or pallet jack. It supplies energy to the traction motor, lifting motor, control system, display, sensors, and other electrical components.
A complete battery system may include:
- Lithium battery cells
- Battery management system
- Cell connection structure
- Busbars or nickel strips
- Power cables
- Charging connector
- Discharge connector
- Communication interface
- Battery housing
- Mounting structure
- State-of-charge display
- Temperature sensors
- Protection components
The battery pack can be installed inside the pallet truck or designed as a removable battery module. The structure depends on the equipment model and the intended operating method.
Some pallet trucks use compact batteries for short warehouse routes, while other models require larger battery packs for long shifts, repeated lifting, or multi-shift operation.
Part 2.Why Lithium Batteries Are Used in Pallet Trucks
Lithium batteries are being considered for pallet trucks because they can support different operating requirements, including frequent charging, compact installation, and repeated daily use.
Important characteristics include:
- Rechargeable operation
- Stable voltage output
- Flexible battery configuration
- Reduced routine maintenance
- Support for opportunity charging
- Compact installation options
- Battery monitoring through BMS
- Integration with equipment communication systems
The actual benefits depend on the battery chemistry, design, charger, operating conditions, and maintenance process.
A lithium battery should be selected based on the complete duty cycle of the pallet truck. A battery that works for a short warehouse route may not be suitable for a pallet truck operating continuously across several shifts.
Part 3.Common Pallet Truck Battery Voltage Options
Pallet trucks use different battery voltages depending on their motor, controller, load capacity, and design.
Common voltage categories include:
- 24V pallet truck batteries
- 36V pallet truck batteries
- 48V pallet truck batteries
- Custom industrial battery systems
The correct voltage must match the original equipment specifications.
A battery’s nominal voltage is not the same as its full-charge voltage or minimum operating voltage. For example, a battery pack described as a 24V system will operate across a voltage range during charging and discharging.
Before selecting a battery, the buyer should confirm:
- Nominal system voltage
- Full-charge voltage
- Minimum discharge voltage
- Controller voltage range
- Charger output voltage
- Motor operating requirements
- BMS voltage limits
Using a battery with an incompatible voltage range can cause controller faults, charging problems, or reduced equipment performance.
Part 4.How to Calculate Pallet Truck Battery Capacity
Battery capacity is usually expressed in ampere-hours or watt-hours.
The required capacity depends on the energy used during a complete work cycle. Important factors include:
- Average traction power
- Lifting motor power
- Maximum load
- Travel distance
- Operating speed
- Number of lifting operations
- Operating hours per shift
- Surface conditions
- Ambient temperature
- Battery efficiency
- Charging frequency
- Required energy reserve
A basic energy calculation can be expressed as:
Required Energy = Average Power × Operating Time ÷ System Efficiency + Energy Reserve
This calculation should be adjusted according to actual equipment data.
For example, a pallet truck used for short-distance movement may consume less energy than a model operating on ramps, uneven floors, or long warehouse routes. A truck carrying heavier loads may also require more energy during acceleration and lifting.
Capacity should not be selected only by comparing ampere-hour values. The battery’s voltage, discharge capability, operating temperature, and usable energy range must also be considered.
Part 5.Continuous Current and Peak Current Requirements
A pallet truck battery must support both normal operating current and short-duration peak current.
Continuous current may be required during:
- Regular travel
- Repeated acceleration
- Long-distance movement
- Continuous lifting
- Operation on ramps
Peak current may occur during:
- Motor startup
- Acceleration
- Lifting heavy pallets
- Direction changes
- Sudden load changes
- Operation on inclined surfaces
The battery manufacturer should review the actual current profile instead of relying only on the motor’s nominal power rating.
Important electrical parameters include:
- Continuous discharge current
- Peak discharge current
- Peak pulse duration
- Starting current
- Regenerative current, if applicable
- Maximum charging current
- Minimum operating voltage
- BMS protection threshold
A battery with insufficient current capability may experience voltage drop, BMS shutdown, excessive heat, or reduced motor performance.
Part 6.Choosing Between Lithium-Ion and LiFePO4 Batteries
Different lithium battery chemistries may be suitable for pallet truck applications. The final selection depends on the equipment design and operating requirements.
Lithium-Ion Battery
Lithium-ion batteries may be selected when the project requires:
- Compact size
- Lower battery weight
- High energy density
- Flexible battery shapes
- Specific discharge performance
The cell model must be evaluated for current capability, internal resistance, thermal behavior, cycle life, and supplier consistency.
LiFePO4 Battery
Lithium iron phosphate, also known as LiFePO4 or LFP, may be suitable for industrial equipment that requires repeated operation and a stable battery system.
Potential design considerations include:
- Cycle life requirements
- Thermal characteristics
- Operating voltage range
- Battery weight
- Installation space
- Discharge current
- Charging profile
- BMS configuration
LiFePO4 cells have different voltage characteristics from other lithium-ion chemistries. The charger, controller, and BMS must therefore be matched to the selected chemistry.
The correct choice should be based on verified technical requirements rather than general statements that one chemistry is suitable for every pallet truck.
Part 7.BMS Design for Pallet Truck Batteries
The battery management system is responsible for monitoring the battery and controlling protection functions.
A pallet truck BMS may include:
- Overcharge protection
- Over-discharge protection
- Overcurrent protection
- Short-circuit protection
- Over-temperature protection
- Low-temperature charging protection
- Cell voltage monitoring
- Cell balancing
- State-of-charge calculation
- Fault recording
- Charge control
- Discharge control
- Communication functions
The BMS must be designed according to the battery configuration and the pallet truck’s operating profile.
BMS Protection Parameters
Protection thresholds should be selected based on:
- Cell chemistry
- Number of cells in series
- Cell discharge capability
- Motor current
- Controller requirements
- Operating temperature
- Charging current
- Expected peak load
If the overcurrent threshold is too low, the BMS may disconnect during normal acceleration or lifting. If the threshold is too high, the protection system may not respond appropriately to an abnormal condition.
CAN and RS485 Communication
Some pallet trucks require communication between the battery and the vehicle controller or display.
Possible communication functions include:
- Battery voltage
- Battery current
- State of charge
- Battery temperature
- Remaining capacity
- Charging status
- Fault codes
- Battery health information
- Service data
CAN, RS485, UART, or another communication method may be used depending on the equipment architecture.
The battery manufacturer should confirm the communication protocol, message format, baud rate, data structure, and fault response requirements before BMS development.
Part 8.Opportunity Charging and Fast Charging
Opportunity charging means charging the battery during short breaks or periods when the equipment is not being used.
This operating method may be useful in warehouses where pallet trucks are used throughout the day. However, the battery must be designed for the intended charging pattern.
Important factors include:
- Maximum charging current
- Charging temperature
- Charger compatibility
- Cell chemistry
- BMS charging limits
- Battery thermal performance
- Number of daily charging events
- Battery state of charge during charging
A battery designed for opportunity charging may require a different cell and BMS configuration from a battery that is fully charged once per day.
Fast charging should also be evaluated as a complete system. The charger, battery cells, BMS, connectors, cables, and thermal structure must all support the selected charging current.
Part 9.Battery Size and Mechanical Integration
Pallet truck battery compartments vary between brands and models. A custom battery pack must fit the available space without interfering with the motor, controller, wheels, steering mechanism, or lifting system.
Mechanical design may include:
- Battery length
- Battery width
- Battery height
- Mounting points
- Battery handle
- Pull-out structure
- Battery locking system
- Cable routing
- Connector location
- Housing material
- Insulation structure
- Internal cell support
For removable batteries, the design should consider the weight distribution and frequency of battery replacement.
A battery that is difficult to remove or install may reduce the practical value of a removable battery system. The handle, locking mechanism, guide rail, and connector should be tested under repeated use.
Part 10.Cable and Connector Selection
The battery’s cables and connectors are part of the power delivery system.
They should be selected according to:
- Continuous current
- Peak current
- Cable length
- Cable flexibility
- Operating temperature
- Connector contact resistance
- Insertion and removal frequency
- Mechanical stress
- Insulation requirements
An undersized cable may create voltage drop and heat. A connector with poor contact quality may cause unstable operation or localized heating.
The manufacturer should check:
- Cable cross-sectional area
- Terminal crimping quality
- Connector locking structure
- Polarity identification
- Strain relief
- Insulation distance
- Connector temperature rise
- Connection resistance
Part 11.Thermal Management
Pallet trucks may operate for extended periods and may experience repeated acceleration, lifting, and charging. These activities generate heat in the battery cells, BMS, cables, and connectors.
Thermal design should consider:
- Cell heat generation
- BMS component temperature
- Charging temperature
- Ambient temperature
- Internal battery spacing
- Housing heat dissipation
- Repeated high-current operation
- Storage conditions
Possible thermal design methods include:
- Suitable cell spacing
- Thermal interface materials
- Temperature sensors
- Improved heat transfer paths
- Firmware-based current limits
- Charging temperature control
- Separation of heat-producing components
The battery manufacturer should test temperature rise during actual operation rather than only during a low-load laboratory test.
Part 12.Battery Performance in Cold Warehouses
Some pallet trucks operate in cold storage facilities or refrigerated warehouses. Low temperatures can affect battery discharge performance, charging behavior, and available capacity.
The battery specification should identify:
- Minimum discharge temperature
- Minimum charging temperature
- Maximum discharge temperature
- Maximum charging temperature
- Cold storage temperature
- Cold-soak duration
- Temperature recovery time
Charging a lithium battery at a temperature below the permitted range may damage the cells or create safety risks. The BMS should monitor temperature and prevent charging when required.
For cold-storage applications, the battery may need:
- Low-temperature charging protection
- Battery heating
- Insulated housing
- Temperature sensors
- Special cell selection
- Cold-temperature testing
The final solution should be verified under the actual warehouse conditions.
Part 13.Battery Safety Features
A pallet truck battery should include safety functions appropriate for industrial operation.
Common features include:
- Overcharge protection
- Over-discharge protection
- Overcurrent protection
- Short-circuit protection
- Over-temperature protection
- Low-temperature charging protection
- Cell voltage monitoring
- Insulation protection
- Connector protection
- Fault indication
- Emergency shutdown support
For industrial applications, the battery housing should also protect the cells and electrical components from vibration, impact, dust, and accidental contact with conductive materials.
The safety design should be evaluated at both the battery-pack level and the complete pallet truck level.
Part 14.Testing Requirements for Pallet Truck Lithium Batteries
A professional OEM/ODM manufacturer should develop a test plan based on the battery specification and equipment application.
Electrical Testing
Typical electrical tests include:
- Nominal voltage test
- Capacity test
- Charge and discharge test
- Continuous current test
- Peak current test
- Voltage drop test
- Internal resistance test
- Cell voltage consistency test
- BMS protection test
- Communication test
- Charger compatibility test
Thermal Testing
Thermal tests may include:
- High-temperature discharge
- Low-temperature discharge
- Low-temperature charging
- Temperature rise during lifting
- Temperature rise during acceleration
- Repeated charging test
- BMS temperature protection test
Mechanical Testing
Mechanical tests may include:
- Vibration testing
- Shock testing
- Drop testing where applicable
- Connector insertion testing
- Cable pull testing
- Battery handle testing
- Battery locking mechanism testing
- Housing fit inspection
Functional Testing
The battery should be installed on the actual pallet truck to evaluate:
- Startup
- Travel
- Acceleration
- Direction changes
- Lifting
- Lowering
- Braking
- Display accuracy
- Communication
- Charging
- Fault recovery
Testing on the actual equipment helps identify issues that may not appear during a standalone battery test.
Part 15.Cell Matching and Production Consistency
Cell consistency is important for battery packs that contain multiple cells connected in series or parallel.
The manufacturer should inspect and match cells according to:
- Voltage
- Internal resistance
- Capacity
- Production batch
- Cell model
- Cell condition
Poor cell consistency can cause:
- Uneven voltage distribution
- Reduced usable capacity
- Early BMS protection
- Increased cell stress
- Uneven aging
- Reduced battery reliability
Production quality control should include incoming cell inspection, welding inspection, BMS testing, insulation inspection, charging and discharging tests, and final functional verification.
Part 16.Certifications and Technical Documents
The documents required for a pallet truck lithium battery depend on the destination market, battery chemistry, product design, and application.
Common documents may include:
- UN38.3 test report
- SDS or MSDS
- CE-related technical documentation
- RoHS documentation
- Battery specification sheet
- Charger compatibility information
- BMS communication documentation
- Safety test reports
- Transportation packaging documents
The buyer should confirm whether the documents apply to the actual battery configuration and cell model.
A report for a different battery pack should not automatically be treated as evidence for a new design. Changes in cell model, series-parallel configuration, BMS, housing, or electrical structure may require additional evaluation.
Part 17.Pallet Truck Lithium Battery OEM/ODM Process
A structured OEM/ODM process helps ensure that the battery matches the equipment and production requirements.
Step 1: Application and Requirement Review
The manufacturer collects the pallet truck model, voltage, capacity, motor power, operating schedule, battery dimensions, charging method, and communication requirements.
The buyer should also provide photographs, drawings, battery compartment measurements, connector information, and the original battery specification where available.
Step 2: Electrical Specification
The engineering team calculates:
- Nominal voltage
- Capacity
- Energy
- Continuous current
- Peak current
- Charging current
- Operating voltage range
- Temperature limits
The proposed specification should be reviewed with the equipment manufacturer or technical team.
Step 3: Cell and BMS Selection
The manufacturer evaluates suitable cell models and designs the series-parallel configuration.
The BMS is selected or developed according to the current, voltage, temperature, communication, and protection requirements.
Step 4: Mechanical Design
The battery structure is designed around the available battery compartment.
This may include:
- Cell layout
- Housing design
- Mounting points
- Handles
- Locking structure
- Cable routing
- Connector placement
- Display integration
Step 5: Prototype Production
A prototype battery pack is assembled for initial evaluation.
The sample should be tested for electrical performance, mechanical fit, charging behavior, BMS operation, and basic safety functions.
Step 6: Equipment Compatibility Testing
The battery is installed on the actual pallet truck.
The test team checks travel, acceleration, lifting, braking, charging, communication, and battery temperature.
Step 7: Design Adjustment
The design may be adjusted according to:
- Voltage drop
- Battery temperature
- BMS protection behavior
- Communication performance
- Battery compartment fit
- Connector position
- Charging time
- Operating duration
Step 8: Pilot Production
A small production batch is assembled to verify the manufacturing process.
The manufacturer checks material consistency, welding quality, BMS programming, assembly accuracy, testing procedures, and packaging.
Step 9: Mass Production
After sample approval and pilot validation, the battery enters mass production.
Typical production steps include:
- Cell incoming inspection
- Cell voltage and resistance testing
- Cell matching
- Cell welding
- BMS installation
- Cable and connector assembly
- Insulation processing
- Housing assembly
- Charging and discharging testing
- Aging testing
- Final inspection
- Packaging and shipment
Step 10: Delivery and Technical Support
After delivery, the manufacturer may provide:
- Installation instructions
- Charging guidance
- BMS communication information
- Maintenance recommendations
- Fault code support
- Battery replacement guidance
- Technical troubleshooting
- Product improvement support
Part 18.How to Select a Pallet Truck Battery Manufacturer
A suitable battery manufacturer should be evaluated through technical evidence and production capability.
Important questions include:
- Does the manufacturer have experience with industrial lithium battery packs?
- Can the company design 24V, 36V, or 48V battery systems?
- Can the battery be customized to fit the original battery compartment?
- Can the manufacturer develop or configure the BMS?
- Does the battery support CAN, RS485, or another communication protocol?
- What are the tested continuous and peak current values?
- How is voltage drop measured?
- What temperature tests are performed?
- Can the supplier provide cell model information?
- Are cells matched before assembly?
- Is prototype development available?
- Can the manufacturer support small-batch and mass production?
- Are UN38.3 and SDS documents available?
- Does the factory perform final charging, discharging, aging, and functional tests?
- Can the supplier provide technical support after delivery?
The manufacturer should provide clear information about test conditions, battery configuration, production process, and applicable documentation.
Part 19.Common Problems With Pallet Truck Battery Replacement
Incorrect Voltage
A replacement battery with an incompatible voltage range may cause controller or charger problems.
Insufficient Capacity
A battery with insufficient usable capacity may not support the required working hours or number of lifting operations.
Low Peak Current
A battery may operate during light travel but shut down during acceleration or heavy lifting if the peak current capability is insufficient.
BMS Communication Failure
A battery may not work correctly if its communication protocol does not match the pallet truck controller or display.
Poor Mechanical Fit
A battery that does not fit securely may cause vibration, cable damage, connector stress, or installation problems.
Incompatible Charger
The charger must match the battery chemistry, voltage, charging current, and BMS requirements.
Limited Cold-Temperature Performance
A battery that works in a normal warehouse may not provide the same performance in a refrigerated environment without suitable low-temperature design.
Part 20.Why Custom OEM/ODM Battery Design Matters
A standard battery may be suitable for one pallet truck model but not another. Custom OEM/ODM development allows the battery to match the complete equipment system.
Possible customization options include:
- Voltage
- Capacity
- Cell chemistry
- Cell configuration
- Continuous current
- Peak current
- BMS functions
- CAN or RS485 communication
- Battery dimensions
- Housing structure
- Mounting points
- Handles
- Locking system
- Cable length
- Connector type
- Charging interface
- Display
- Label and packaging
Custom design is particularly useful when the buyer needs to replace an older lead-acid battery, develop a new pallet truck model, or standardize battery packs across several equipment versions.
Conclusion
A pallet truck lithium battery must be designed around the actual equipment and operating conditions. Voltage, capacity, current, battery chemistry, BMS, charger, mechanical structure, thermal management, and communication functions all influence the final result.
For buyers, the OEM/ODM process should begin with detailed equipment information and continue through electrical design, cell selection, BMS development, prototype testing, vehicle compatibility testing, pilot production, and mass manufacturing.
A qualified lithium battery manufacturer can support custom pallet truck battery projects for warehouse equipment, logistics operations, industrial facilities, and material handling applications. The final battery should be evaluated through documented testing and confirmed compatibility with the intended pallet truck.
FAQ
What battery voltage is used in an electric pallet truck?
Electric pallet trucks may use 24V, 36V, 48V, or other voltage systems. The correct voltage depends on the equipment model, motor, controller, and charger.
Can a lead-acid pallet truck battery be replaced with lithium?
In some applications, a lithium battery can replace a lead-acid battery. However, the voltage range, charger, battery dimensions, BMS, weight, and equipment compatibility must be reviewed before replacement.
Is LiFePO4 suitable for pallet trucks?
LiFePO4 may be suitable for pallet trucks that require repeated operation and a stable battery system. The cell configuration, voltage range, charging profile, current capability, and BMS must be matched to the equipment.
Does a pallet truck lithium battery need a BMS?
Yes. A suitable BMS provides monitoring and protection functions such as overcharge, over-discharge, overcurrent, short circuit, and temperature protection.
Can the battery communicate with the pallet truck controller?
Yes. Depending on the equipment architecture, the battery may support CAN, RS485, UART, or another communication protocol. The communication requirements must be confirmed during the design stage.
Can the battery be customized to fit an existing battery compartment?
Yes. OEM/ODM manufacturers can customize battery dimensions, housing, mounting structure, handles, cables, connectors, and other mechanical features.
Can lithium batteries support opportunity charging?
Some lithium battery systems can be designed for opportunity charging. The cells, BMS, charger, connectors, and thermal system must support the required charging frequency and current.
What documents are needed for shipping a pallet truck lithium battery?
Common documents may include UN38.3, SDS or MSDS, technical specifications, and other documents required by the destination market and transportation method.
How long does it take to develop a custom pallet truck battery?
The development time depends on whether the project uses an existing battery platform or requires new cell configuration, BMS programming, mechanical design, and equipment testing. The timeline should be confirmed after the technical requirements are reviewed.
What information should buyers provide to a battery manufacturer?
Useful information includes the pallet truck model, voltage, capacity, motor power, battery compartment dimensions, connector photos, charger details, operating hours, load requirements, working temperature, and communication protocol.
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