Choosing the right battery pack manufacturer is an important step when developing an e-bike, electric scooter, EV, drone, robotics system, solar product, UPS, industrial machine or other battery-powered equipment.

A good manufacturer should do more than assemble cells. They should understand your application’s voltage, capacity, current, cell chemistry, dimensions, BMS, charger, connectors and testing requirements and help convert those requirements into a repeatable battery pack design.

1. Understand Your Battery Requirements First

Before contacting a manufacturer, prepare as much information as possible.

If you don’t know the exact battery configuration, provide your motor/equipment power, operating time, available space and application details. A capable manufacturer can help determine the battery configuration.

2. Check Whether the Company Actually Manufactures Batteries

One of the first questions to ask is:

“Do you manufacture the battery pack or only resell finished batteries?”

Ask about their actual manufacturing capabilities:

• Cell testing
• Cell matching
• Spot welding
• Busbar assembly
• BMS installation
• Wiring
• Insulation
• Enclosure assembly
• Charging testing
• Discharge testing
• Capacity testing
• Final inspection

For OEM products, control over these processes is important because the approved battery specification needs to be reproduced consistently in future production. Lion Battery describes these processes as part of its battery manufacturing workflow.

3. Check Battery Cell Quality

The cells are one of the most important components of a lithium battery pack.

Ask the manufacturer:

• Which cell brand and model will be used?
• What is the cell capacity?
• What is the continuous discharge capability?
• What is the chemistry?
• Are the cells new?
• Are cells tested before assembly?
• Are cells matched?
• Can the cell datasheet be provided?

Common formats include:

• 18650
• 21700
• Prismatic
• Pouch

The cell should be selected according to the required energy, current, dimensions, temperature range and application rather than simply choosing the cheapest available cell.

4. Choose the Correct Battery Chemistry

A battery manufacturer should help you select the chemistry according to your product requirements.

NMC / Li-ion

Often considered when:

• Compact size is important
• Weight is important
• High energy density is required
• Space is limited

Common applications include:

• E-bikes
• Electric scooters
• EVs
• Drones
• Robotics
• Portable equipment

LiFePO₄ / LFP

Often considered when:

• Long service life is important
• Thermal stability is a priority
• More battery volume and weight can be accommodated
• Solar or energy-storage applications are involved

Common applications include:

• Solar storage
• ESS
• UPS
• Inverters
• Telecom
• Industrial backup

The correct chemistry depends on the complete application rather than one specification alone.

5. Check BMS Capability

The Battery Management System (BMS) should be selected according to the complete battery system.

Check:

• Series configuration
• Continuous discharge current
• Peak current
• Charging current
• Battery chemistry
• Temperature sensors
• Cell balancing
• Protection functions
• Communication requirements

Depending on the application, you may require:

• Standard BMS
• Smart BMS
• Bluetooth BMS
• CAN BMS
• RS485 BMS
• UART communication
• Active balancing

For advanced products, communication between the battery and controller/inverter/vehicle may also be required.

6. Check Custom Battery Dimensions

If the battery must fit inside your product, standard battery sizes may not be suitable.

A custom manufacturer may need to provide:

• Custom length
• Custom width
• Custom height
• Custom shape
• Mounting holes
• Custom connectors
• Cable exits
• BMS access
• Enclosure
• Mounting brackets
• Custom wiring

This is particularly important for e-bikes, scooters, drones, robotics, EVs and industrial equipment.

7. Ask About Battery Testing

Don’t compare manufacturers only on price.

Ask:

“What tests do you perform before delivery?”

Depending on the battery and application, testing may include:

Cell Testing

• Voltage
• Internal resistance
• Capacity

Pack Testing

• Pack voltage
• Charge test
• Discharge test
• Capacity test
• BMS protection
• Cell balancing
• Temperature monitoring
• Communication testing
• Final inspection

Lion Battery’s published manufacturing process includes cell testing/matching, BMS installation, charge/discharge testing and final inspection.

8. Ask for a Prototype Before Mass Production

For a new product, consider this development process:

Requirement → Design → Prototype → Testing → Approval → Production

A prototype allows you to check:

• Physical fit
• Voltage
• Capacity
• Current performance
• Charging
• BMS operation
• Connector compatibility
• Communication
• Mounting
• Temperature
• Actual runtime

This can help identify design problems before committing to a larger production quantity.

9. Check OEM and ODM Capability

Understand the difference between OEM and ODM.

OEM

You provide the approved battery specification and the manufacturer produces the battery according to that specification.

ODM

You provide the application requirements and the manufacturer helps with:

• Cell selection
• Battery configuration
• BMS selection
• Pack design
• Enclosure
• Prototype
• Testing
• Production

For startups and equipment manufacturers, ODM support can be useful when the battery design has not yet been finalized.

10. Check Private-Label Capability

If you plan to sell the battery under your own brand, ask whether the manufacturer can support:

• Brand logo
• Product labels
• Model number
• Serial number
• QR code
• Packaging
• Technical labels
• Private-label production

Discuss branding requirements before prototype approval so that the production design can accommodate them.

11. Compare Manufacturers on More Than Price

Two batteries with the same 48V 30Ah specification can still be very different products.

Compare:

A quotation should therefore be compared on the complete battery specification, not only the price per Ah.

12. Check Technical Support

A battery is part of a larger system.

Your manufacturer should be able to discuss:

• Motor/controller compatibility
• Charger voltage
• BMS settings
• Motor current
• Solar inverter compatibility
• CAN/RS485 communication
• Charging requirements
• Thermal requirements
• Mechanical mounting
• Battery protection

This becomes particularly important for custom EV, solar, robotics and industrial projects.

13. Check Production Scalability

Your requirement may change from:

Prototype → 10 units → 100 units → 1,000+ units

Before selecting a manufacturer, ask whether they can support your expected future quantity while maintaining the same approved specification.

Discuss:

• Prototype quantity
• MOQ
• Monthly production capacity
• Lead time
• Cell availability
• Component availability
• Quality consistency
• Future production
• Replacement/repair support

14. Ask for a Proper Battery Datasheet

Before approving the final battery, request a technical datasheet containing, where applicable:

• Model number
• Chemistry
• Nominal voltage
• Capacity
• Energy
• Maximum charging current
• Maximum discharge current
• Charge voltage
• Cutoff voltage
• Dimensions
• Weight
• BMS specification
• Connector
• Operating temperature
• Cycle-life information
• Testing information

A written specification reduces misunderstandings between the customer and manufacturer.

15. Check Certifications and Documentation

The required compliance documents depend on the battery design, application and target market. Don’t assume that a certificate for one battery automatically applies to every battery made by the same supplier.

Ask the manufacturer which applicable documents are available for your specific product, such as:

• Battery datasheet
• Test report
• MSDS/SDS
• Transport documentation
• Applicable safety certifications
• Application-specific compliance documents

For products sold or transported internationally, discuss the applicable requirements before production.

16. Ask These Questions Before Ordering

Before selecting a battery pack manufacturer, ask:

1. Which cell brand and model will you use?
2. Can you provide the cell datasheet?
3. Are the cells tested before assembly?
4. How are cells matched?
5. Which BMS will be installed?
6. Can the BMS support CAN/RS485/Bluetooth if required?
7. Can you manufacture according to my dimensions?
8. Can you provide a prototype?
9. What capacity and discharge testing is performed?
10. Can you provide a test report?
11. What is the MOQ?
12. What is the production lead time?
13. Can you support OEM/ODM production?
14. Can you provide private-label manufacturing?
15. What technical and after-sales support is available?

17. Battery Manufacturer Selection Checklist

Before placing your purchase order, verify:

☐ Correct battery chemistry
☐ Correct voltage
☐ Correct Ah capacity
☐ Correct continuous/peak current
☐ Suitable cells
☐ Correct BMS
☐ Correct charger
☐ Correct dimensions
☐ Correct connector
☐ Required communication protocol
☐ Prototype tested
☐ Capacity tested
☐ Charge/discharge tested
☐ Final specification approved
☐ Documentation received
☐ Production quantity confirmed

18. Why Choose Lion Battery for Custom Battery Packs?

Lion Battery provides custom lithium battery pack manufacturing and related services from Umargam, Valsad, Gujarat.

Services include:

• Custom Li-ion battery packs
• NMC battery packs
• LiFePO₄ battery packs
• 18650 battery packs
• 21700 battery packs
• EV batteries
• E-bike batteries
• Electric scooter batteries
• Drone batteries
• Solar batteries
• ESS batteries
• UPS batteries
• Industrial battery packs
• Cell matching
• BMS integration
• Battery testing
• OEM manufacturing
• ODM development
• Private-label battery manufacturing

Lion Battery’s published custom battery process includes requirement analysis, cell selection, cell testing/matching, battery configuration, BMS integration, assembly and testing.

19. Custom Battery Manufacturing Process

Requirement Analysis
↓
Battery Design
↓
Cell Selection
↓
Cell Testing & Matching
↓
Series/Parallel Configuration
↓
BMS Selection
↓
Prototype Manufacturing
↓
Charge & Discharge Testing
↓
Customer Approval
↓
Production
↓
Final Quality Inspection

20. What Information Should You Send for a Battery Quote?

Send the manufacturer:

Application: E-bike / EV / Solar / Drone / Industrial
Voltage: ___ V
Capacity: ___ Ah
Continuous Current: ___ A
Peak Current: ___ A
Dimensions: ___ × ___ × ___ mm
Maximum Weight: ___ kg
Cell Preference: NMC / LFP / Not sure
BMS: Standard / Smart / CAN / RS485 / Bluetooth
Connector: ___
Charger: ___ V / ___ A
Quantity: ___ pcs
Drawing/Photo: If available

Providing this information helps the manufacturer evaluate the battery configuration and prepare a more accurate quotation.

Contact Lion Battery

Lion Battery – Custom Lithium Battery Pack Manufacturer

📞 Call / WhatsApp: +91-9724991737
📧 Email: info@lionbattery.in
🌐 Website: lionbattery.in
📍 Umargam, Valsad, Gujarat, India

Unit-1: Plot No. B/16, Panna Nivas, Sheetal Township, Dahad Road, Umargam, Valsad, Gujarat – 396170

Unit-2: Plot No. J9/2, Opp. Gol Canteen, Old GIDC Industrial Estate, Umargam, Valsad, Gujarat – 396170