15S-40A LiFePO₄ (LFP) BMS — DALY Model

Overview

The DALY 15S-40A BMS is designed for 15-series LiFePO₄ battery packs, supporting continuous current up to 40A. It offers full battery protection and balancing to maintain safety and prolong battery life.

Specifications

• Cell Configuration: 15S (15 cells in series)

• Battery Chemistry: LiFePO₄ (LFP)

• Nominal Voltage: ~48V (3.2V nominal per cell × 15)

• Maximum Continuous Current: 40A

• Peak Current: Typically higher for short bursts (up to 60A or more)

• Balancing: Passive cell balancing

• Balance Current: Approximately 30mA to 100mA

• Protections:

  • Over-voltage

  • Under-voltage

  • Over-current

  • Short-circuit

  • Temperature (over and under)

• Communication:

  • Optional Bluetooth or CAN interfaces depending on model

• Operating Temperature Range: -20°C to +60°C (typical)

Features

• Real-time monitoring of each cell’s voltage

• Automatic passive balancing during charging

• Safety cutoff functions to protect cells and pack

• Compact and reliable design by DALY

• Optional communication modules for remote monitoring

Applications

• Electric vehicles and e-bikes with 48V LiFePO₄ packs

• Solar energy storage systems

• Portable power stations

• DIY battery pack projects requiring 15S configuration

Important Notes

• Designed for LiFePO₄ chemistry only—do not use with other battery types.

• Proper wiring of balance leads and main terminals is essential for safety.

• Cooling or ventilation may be necessary under high continuous load.

• Ensure compatibility with chargers and loads within the 40A continuous rating.

• Some DALY BMS models support Bluetooth app monitoring and firmware upgrades—check your specific model.