4S 4000mAh LiPo Drone Battery

YIHANG, a China manufacturer, supplies the 4S 4000mAh LiPo Drone Battery for UAV platforms that need a 14.8V power system with a balance of discharge capability, capacity, and pack weight. The 4S configuration is available for different drone layouts, with customizable capacity, discharge rate, dimensions, connectors, and BMS options.

Battery Parameter

Built-in Smart BMS with LED Indicator Panel — Real-time Monitoring, Multi-layer Protection, and Full Lifecycle Data Management.

What is 4S 4000mAh LiPo Drone Battery?

A 4S LiPo battery connects four cells in series to provide a nominal voltage of 14.8V and a full-charge voltage of 16.8V. The 4000mAh configuration offers a practical starting point for compact UAVs, FPV platforms, and other drone systems using a 4S power architecture.

The 4S 4000mAh LiPo Drone Battery uses high-density LiPo cells and supports a discharge rate above 25C, making it suitable for applications that require responsive power output. Cell selection and pack assembly are controlled to maintain consistent electrical characteristics across the battery, while the optional BMS can be configured for applications that require additional protection, balancing, or communication functions.

The 4S platform can also be adapted beyond the standard 4000mAh configuration. YIHANG supports different capacities, pack dimensions, connectors, discharge requirements, and BMS configurations so the battery can be matched to the available battery compartment and electrical requirements of the UAV.

Data-sheet of Different Configurations

Key Battery Advantages

1. High-Rate Power Output

The standard 4S 4000mAh configuration supports a discharge rate above 25C. This makes it suitable for UAV systems that require relatively high current output within a compact 14.8V battery architecture.

2. Compact 4S Configuration

With four cells connected in series, the 4S configuration provides a 14.8V nominal output while keeping the pack structure suitable for compact UAV platforms. Capacity and pack dimensions can be adjusted when the standard configuration does not match the available battery space.

3. Multiple Capacity Options

The same 4S platform is available in 4000mAh, 5000mAh, 6000mAh, 8000mAh, and 10000mAh reference configurations. This gives drone designers more flexibility when balancing battery weight, available space, and required operating energy.

4. Optional BMS Integration

A BMS can be added according to the application. Depending on the selected configuration, the BMS can support battery protection, cell balancing, and communication functions where required.

5. Flexible Electrical and Mechanical Configuration

YIHANG supports customization of capacity, discharge rate, dimensions, voltage, connectors, and BMS parameters. This allows the battery pack to be adapted to different drone frames and power-system requirements.

Why Choose YIHANG

For UAV battery projects, the useful part of customization is not simply changing the label or connector. YIHANG can adjust the pack around the required voltage, capacity, dimensions, discharge rate, connector, and BMS configuration so the battery fits the electrical and mechanical requirements of the target platform.

The 4S series includes multiple capacity options, allowing the same basic voltage architecture to be used across different UAV configurations. Reference models range from 4000mAh to 10000mAh, while additional specifications can be discussed according to the application.

For development projects, battery parameters can be reviewed before production, including pack dimensions, electrical configuration, connector selection, and BMS requirements. This is useful when replacing an existing battery or adapting a battery pack to a new drone platform.

Production and Quality Control

Production of a LiPo UAV battery involves cell selection, cell matching, pack assembly, electrical connections, protection-system integration when required, and final inspection. The focus is to maintain consistent electrical characteristics and ensure that the finished pack meets the agreed specification.

Before shipment, the battery can be checked for capacity, voltage, electrical performance, connector configuration, and other specified parameters. Test requirements can also be defined for customized projects based on the final battery design.

FAQ

Q1: What is a 4S 4000mAh LiPo drone battery?

A 4S 4000mAh LiPo battery contains four cells connected in series. It has a nominal voltage of 14.8V and a full-charge voltage of 16.8V, with a nominal capacity of 4000mAh. It is commonly considered when a UAV requires a 4S power system with a combination of compact size and relatively high discharge capability.

Q2: What does 4S mean on a LiPo battery?

“4S” means four LiPo cells are connected in series. The cell voltages add together, producing a nominal pack voltage of 14.8V. The exact electrical requirements of the drone, including the ESC, motors, and other components, should be checked before selecting a 4S battery.

Q3: Can the 4S battery be customized for another UAV?

Yes. YIHANG supports customization of capacity, discharge rate, battery dimensions, connectors, voltage configuration, and BMS parameters. The final battery design should be based on the drone's electrical system, available battery space, required current, and operating conditions.

Q4: Does this 4S LiPo battery include a BMS?

The BMS is optional and can be customized according to the application. A configured BMS may provide functions such as overcharge, over-discharge, overcurrent, short-circuit, temperature protection, balancing, and communication, depending on the selected design.

Q5: How should a 4S LiPo battery be charged and stored?

Use a charger designed specifically for 4S LiPo batteries and follow the battery manufacturer's recommended charging limits. For storage, keep the pack in a suitable LiPo storage state and a controlled environment rather than leaving it fully charged for extended periods. Avoid charging or using a damaged, swollen, or mechanically compromised pack.

Q6: What is the difference between the 4000mAh, 6000mAh and 10000mAh versions?

The main difference is the available capacity, which affects stored energy and usually pack weight and dimensions as well. The 4000mAh version is a more compact reference configuration, while the 6000mAh and 10000mAh versions provide greater nominal capacity. The appropriate choice depends on the drone's allowable battery weight, available space, current demand, and required operating duration.