4S 40A 18650 Balanced BMS with Protection Board

The 4S 40A 18650 Balanced Battery Management System (BMS) with Protection Board is designed to manage and protect a 4-series (4S) lithium-ion battery pack, typically using 18650 cells. This BMS ensures the safe operation of the battery pack by balancing the charge among cells, preventing overcharge, over-discharge, and overcurrent conditions. It is ideal for use in battery packs for electric vehicles, power tools, and other high-power applications.

Key Features:

• Suitable for 4-series (4S) lithium-ion battery packs
• Supports a continuous discharge current of up to 40A
• Provides cell balancing to ensure uniform charging
• Protection against overcharge, over-discharge, and overcurrent
• Short-circuit protection
• Built-in temperature protection
• Compact and lightweight design

Technical Specifications:

• Battery Configuration: 4S (4-series)
• Continuous Discharge Current: 40A
• Overcharge Protection Voltage: Typically 4.25V ±0.05V per cell
• Overdischarge Protection Voltage: Typically 2.8V ±0.05V per cell
• Balance Current: Typically 30mA
• Balance Voltage: Typically 4.2V ±0.05V per cell
• Overcurrent Protection: Activated at 60A (±5A)
• Short-Circuit Protection: Yes
• Operating Temperature Range: -20°C to +60°C
• Dimensions: Varies by manufacturer
• Weight: Varies by manufacturer

Applications:

• Electric Vehicles: Provides reliable battery management for electric cars, bikes, and scooters.
• Power Tools: Ensures safe and efficient operation of battery-powered tools.
• Energy Storage Systems: Manages and protects battery packs in solar and renewable energy storage solutions.
• Portable Devices: Enhances the safety and performance of high-capacity portable battery packs.

Usage:

1. Connect the BMS to the battery pack according to the wiring diagram provided by the manufacturer.
2. Ensure proper insulation and secure connections to prevent short circuits and other hazards.
3. Install the BMS in a well-ventilated area to allow heat dissipation and prevent overheating.
4. Monitor the battery pack during initial use to ensure proper operation and protection features.
5. Regularly check the connections and condition of the BMS to maintain optimal performance.

Caution:

• Follow the wiring diagram carefully to avoid incorrect connections that can damage the BMS or battery pack.
• Do not exceed the rated current and voltage limits to prevent overheating and potential failure.
• Handle with care to avoid physical damage to the BMS components.
• Ensure proper ventilation to prevent overheating during high-current operation.
• Keep away from moisture and extreme temperatures to maintain reliability and longevity.