12V 4S 40A Lifepo4 Battery Management System

Description

🔋 Daly BMS 4S 40A Waterproof – LiFePO4 Battery Protection Board

The Daly 4S 40A Waterproof BMS is a high-performance Battery Management System designed for 12V (4S) LiFePO4 battery packs. Built with a waterproof and dustproof casing, this BMS is ideal for outdoor and rugged applications where durability and safety are essential.

⚙️ Key Features

• ✅ Designed for 12V (4S) LiFePO4 Batteries

  Perfect compatibility with 4 cells in series.

• 💧 Waterproof & Dustproof Design

  Sealed construction for reliable use in outdoor and harsh environments.

• 🔒 Advanced Protection System
  • Over Charge Protection
  • Over Discharge Protection
  • Over Current Protection
  • Short Circuit Protection
• ⚡ 40A Continuous Current Support

  Suitable for medium to high load applications.

• 🌡️ Temperature Protection

  Built-in temperature control for safe operation.

• 🔄 Cell Balancing Function

  Maintains equal voltage across cells for longer battery life.

📊 Technical Specifications

• Brand: Daly
• Battery Type: LiFePO4
• Nominal Voltage: 12V
• Configuration: 4S (4 Cells in Series)
• Continuous Discharge Current: 40A
• Peak Current: 80A (Short Duration)
• Charge Voltage: 14.6V
• Balance Type: Passive Balancing
• Waterproof Level: Yes (Sealed Design)
• Protection Functions: Overcharge, Over-discharge, Overcurrent, Short circuit, Temperature
• Operating Temperature: -20°C to 70°C

🔧 Applications

• 🚲 Electric Bikes / Scooters
• ☀️ Solar Energy Storage Systems
• 🚤 Marine & Outdoor Applications
• 🔌 Backup Power Systems (UPS)
• 🛠️ DIY Lithium Battery Packs

📦 Package Includes

• 1 × Daly BMS 4S 40A Waterproof Board

⚠️ Important Notes

• Use only with 4S LiFePO4 battery packs.
• Ensure proper wiring before connecting load/charger.
• Waterproof does not mean fully submersible—avoid direct water immersion.
• Professional installation recommended.

💡 Why Choose Daly Waterproof BMS?

The Daly 4S 40A Waterproof BMS is known for its durability, stable performance, and strong protection features, making it a perfect choice for users who need a reliable BMS for outdoor and heavy-duty applications.