BMS 2S

The KURUI 2S BMS is designed for high-performance 20S lithium polymer battery systems, offering precise cell monitoring, multi-layer protection, smart balancing, and reliable power delivery for electric motorcycles, high-speed scooters, and custom EV projects. Built with automotive-grade components and optimized algorithms, KURUI ensures stable operation, longer battery life, and safer charging across demanding environments.As a professional BMS manufacturer, KURUI provides not only advanced 2S BMS but also a complete product ecosystem, including Smart BMS, Standard BMS, customizable BMS modules, and essential BMS accessories. This full-stack offering allows OEMs, distributors, and system integrators to source everything from intelligent CAN/RS485 monitoring to high-current protection boards within one dependable brand.By combining intelligent control, robust hardware, and flexible customization options, KURUI helps customers build safer, smarter, and more efficient lithium battery systems for mobility, energy storage, and industrial applications.

BMS 2S – Reliable Protection for 2-Series Lithium Battery Packs

A 2S BMS is the core safety and performance controller for 2-cell lithium battery packs (Li-ion / Li-polymer / LiFePO₄).
KURUI’s 2S BMS is designed for stable power output, extended battery life, and high-level protection, making it ideal for compact yet high-demand applications.

Where Can a 2S BMS Be Used? (Application Scenarios)

Portable Power Devices

• Handheld tools

• Small medical equipment

• Flashlights & tactical lighting

• Wireless monitoring devices

Smart Consumer Electronics

• Smart speakers

• Mini robots

• Drones & RC devices

• Wearable power packs

Compact E-Mobility

• Mini electric scooters

• Skateboards

• Light mobility solutions (5S power core)

Backup Energy Modules

• Communication backup units

• Sensor systems

• IoT power modules

• Emergency lighting systems

KURUI’s 5S BMS supports custom current, MOS configuration, balancing type, communication protocol (UART/RS485/CAN)—ideal for OEM customization.

Key Advantages of KURUI 2S BMS

• Accurate voltage & current protection

• Overcharge / over-discharge / short-circuit / overcurrent protection

• Thermal monitoring & high-temperature cutoff

• Optional Active Balancing for longer cycle life

• Stable discharge for motors & high-load electronics

• Customizable for different pack designs

FAQ – Frequently Asked Questions

1. What type of batteries does a 2S BMS support?

Supports lithium-ion (3.7V), lithium polymer, and LiFePO₄ (3.2V) chemistry.

2. Can I customize discharge current or charging current?

Yes. KURUI offers customizable 2S BMS with multiple current levels (10A–100A+).

3. Does it support balancing?

Yes. Available in passive balancing or active balancing depending on project needs.

4. Can the 2S BMS support communication functions?

Optional UART / RS485 / CAN / Bluetooth depending on model.

5. Is the BMS suitable for motors?

Yes, the high-discharge version supports peak current output for small motors, mini scooters, robots, etc.

6. Can it operate in high/low-temperature environments?

Standard working range is –20°C to 60°C, and can be customized for industrial-grade applications.

7. Do you offer OEM/ODM services?

Yes. KURUI provides full customization including ID design, firmware tuning, wiring definition, and PCBA modification.