The 4S 30A 14.8V Li-ion Battery BMS Protection Board is a high-quality battery management system designed to keep your 18650 lithium battery packs safe and efficient. With built-in balance functionality, this BMS provides excellent performance for DIY projects, e-bikes, solar storage, and portable power systems.

✅ Key Features

• Voltage Support: Works with 4S (4-cell) 14.8V Li-ion batteries

• Current Capacity: Handles up to 30A continuous discharge

• Protection Functions:

  • Overcharge protection

  • Over-discharge protection

  • Over-current protection

  • Short-circuit protection

• Balance Charging: Ensures each cell charges evenly, improving battery life

• Compact Design: Easy to integrate into battery packs and DIY builds

✅ Specifications

• Battery Type: 18650 Li-ion

• Configuration: 4S (4 cells in series)

• Nominal Voltage: 14.8V

• Current Rating: 30A

• Board Type: BMS PCB with balance function

✅ Why Choose This BMS?

Using this 4S 30A 14.8V Li-ion Battery BMS Protection Board ensures your battery pack remains safe, balanced, and long-lasting. Whether you’re building a custom power pack, repairing an e-bike, or working on a solar project, this protection board is a reliable choice.

✅ Applications

• DIY power banks

• E-bikes and scooters

• Solar energy storage

• Robotics projects

• Portable power systems