Electric Scooter Custom Battery Guide: Information We Need Before Production

For many electric scooter riders and distributors, a custom battery is the best solution when upgrading performance, extending range, or replacing a battery for a specific model. However, every scooter has different battery compartments, connectors, and controller requirements.

To ensure the battery fits perfectly and works safely, we follow a clear communication process with our customers before production begins. Below is the key information we typically need to confirm when customizing an electric scooter battery.

1. Confirm Battery Dimensions and Voltage

The first step is to determine the available space for the battery and the required battery voltage.

Customers can provide either:

• The exact battery size (Length × Width × Height)
  or

• The remaining space in the battery compartment (Length × Width × Height)

At the same time, we need to confirm the voltage requirement, such as:

• 48V

• 52V

• 60V

• 72V

Once we have this information, we can determine:

• The maximum battery size that can fit the scooter

• The maximum battery capacity (Ah) that can be built

• The optimal cell arrangement inside the pack

This step is essential because the available space directly determines the battery capacity and riding range.

2. Confirm the Battery Connector to the Controller

Next, we confirm the output connector between the battery and the controller.

The easiest way to do this is to ask customers to send a photo of the connector. This helps us identify the exact type and avoid compatibility issues.

The most common connectors used in electric scooters include:

• XT60

• XT90

Confirming the connector type ensures that:

• The battery can connect directly to the controller

• No additional adapters are required

• The connector can handle the required current safely

3. Confirm the Charger Connector

The charging port is another important detail that needs confirmation.

We typically check:

• The charger connector type

• The positive and negative pin configuration

Common charging connectors include:

• 1 positive + 2 negative pins

• 1 positive + 3 negative pins

If the polarity or connector type cannot be confirmed, we usually recommend purchasing a compatible charger together with the battery. This ensures the charging system is fully matched and avoids potential charging issues.

4. Confirm the Controller Current (Amps)

Another key factor when building a custom battery is the controller current rating.

Customers should provide:

• The controller current (A)

• A photo of the controller label if possible

For scooters with dual controllers, we need to calculate the total current:

Total current = Front controller current + Rear controller current

This value determines the BMS (Battery Management System) current rating required for the battery.

A basic rule we follow is:

The BMS current rating must be higher than the total controller current.

For example:

• Dual controllers: 2 × 40A

• Total current: 80A

• Recommended BMS: 100A or higher

This ensures the battery can deliver sufficient power without triggering protection during high-performance riding.

5. Brand or Special Requirements

If customers have specific preferences, it’s best to discuss them early in the process. These may include:

• Preferred battery cell brands (such as LG, Samsung, etc.)

• Custom battery housing or casing

• Special cable or connector configurations

Early confirmation helps us ensure the final battery meets all expectations.

Conclusion

To build a reliable and compatible custom battery for an electric scooter, we typically confirm the following information with our customers:

1. Battery size or battery compartment space (L × W × H) + required voltage (48V / 52V / 60V / 72V)

2. Battery connector type to the controller (preferably with a photo)

3. Charger connector type and polarity configuration

4. Controller current rating to determine the appropriate BMS

5. Any brand preferences or special customization requests

By confirming these details in advance, we can ensure that every custom battery we produce is safe, powerful, and perfectly matched to the scooter.

If you're planning to upgrade or replace your electric scooter battery, feel free to contact us. Our team will help you design the right battery solution for your specific scooter model.