The demand for electric scooters continues to rise globally, and the battery has become the most critical component affecting safety, performance, and product lifespan. For B2B buyers—distributors, retailers, rental fleets, and repair shops—purchasing the right battery directly affects customer satisfaction, warranty rates, and long-term business operations.

This guide explains the six key areas B2B buyers must evaluate when sourcing e-scooter batteries.

1. Confirm Essential Battery Specifications (Voltage / Capacity / Discharge Current)

Before purchasing, B2B buyers should clearly understand three core specifications:

1) Voltage (V)

Common e-scooter battery voltages:

• 24V – basic entry models

• 36V – most widely used

• 48V – mid-to-high-end scooters

 Using the wrong voltage can damage the controller or cause the scooter to fail.

2) Capacity (Ah)

Typical capacities:

• 7.8Ah

• 10Ah

• 12.5Ah

• 15Ah

• 20Ah

Higher capacity = longer mileage but also heavier weight.

3) Discharge Current / BMS Current

This directly affects acceleration and battery lifespan.

Example:

• 15A BMS → suitable for 250W–350W motors

• 20A BMS → suitable for 350W–500W

• 30A+ BMS → high-performance scooters

 If discharge current is too low:

• Scooter may shut down during acceleration

• Battery heats up

• Warranty claims increase

2. Battery Size & Connector Compatibility Determine Whether It Fits

E-scooters usually have very tight internal space. Even a small mismatch may prevent installation.

You must confirm:

• Battery size (L × W × H)

• Plug type (XT30, XT60, DC5521, customized connectors)

• Communication protocol (Some brands require CAN or RS485)

 Size & connector mismatches are among the most common B2B complaints.

3. Safety: A Reliable BMS Reduces Warranty Issues

Because e-scooters are compact and have limited heat dissipation, the BMS (Battery Management System) becomes essential for safety.

A good BMS must support:

• Over-current protection

• Over-charge protection

• Over-discharge protection

• Short-circuit protection

• Cell-balancing function

A stable BMS significantly lowers failure rates, which is critical for B2B sellers.

4. Cell Quality Determines Battery Lifespan

Battery cells are the core of the entire pack.

Recommended cell options:

• Samsung / LG → premium, long lifespan

• EVE / Lishen / CATL → high consistency, cost-effective

• Unbranded cells → large risk of capacity loss or early failure

Cell matching consistency (sorting) is essential

Good factories will perform:

• Voltage sorting

• Internal resistance testing

• Capacity grouping

Consistent cell groups = longer life + lower warranty cost.

5. Compliance & International Shipping Requirements

E-scooter batteries belong to UN3480 Class 9 Dangerous Goods, so compliant documentation is necessary.

Must-have certifications:

• UN38.3 test report

• MSDS

• Proper lithium battery packaging

• DG-approved shipping channels

 Without these documents, many couriers and airlines will refuse the shipment.

6. Evaluate Supplier Capability: The Key to Long-Term Cooperation

A reliable manufacturer should provide:

1) Complete testing procedures

• 72-hour aging test

• Capacity test

• BMS function test

• Vibration & drop test

2) Clear warranty policy

Common B2B warranties:

• 6 months

• 12 months (premium batteries)

3) Customization capability

• Customized size

• Customized voltage/capacity

• Connector customization

• BMS current customization

• Communication protocol customization

4) Stable production capacity

• Consistent quality in each batch

• Predictable lead time

• Long-term supply capability

Conclusion: The 6 Things B2B Buyers Must Check Before Purchasing

1. Correct voltage, capacity, and discharge current

2. Battery size + connector compatibility

3. Reliable BMS safety protection

4. A-grade battery cells

5. Certified & compliant shipping documents

6. A professional factory with stable production and after-sales service

Choosing the right supplier not only reduces warranty claims but also improves your market reputation and customer satisfaction.