1S 3.2V 3A LiFePO4 BMS PCM Battery Protection Board

1S 3.2V 3A LiFePO4 BMS PCM Battery Protection Board provides essential safety and management for single-cell Lithium Iron Phosphate batteries, ensuring they operate within safe voltage and current limits. This compact protection circuit module (PCM) actively monitors the cell status to prevent common hazards such as overcharging, deep discharging, and short circuits. Consequently, it significantly extends the overall lifespan and reliability of your energy storage projects. Utilizing high-precision voltage detection and low-resistance MOSFETs, the board maintains system efficiency while offering a robust 3A continuous discharge capability. Furthermore, its miniature footprint makes it an ideal choice for space-constrained portable electronics. Therefore, you should integrate this BMS to safeguard your LiFePO4 cells against electrical stress and potential thermal runaway.

Key Features:

• Comprehensive Protection: The board includes dedicated circuitry for overcharge, over-discharge, over-current, and short-circuit protection.
• High-Precision Voltage Detection: It accurately monitors cell voltage to trigger protection states at precise thresholds, ensuring the chemistry remains stable.
• Low Quiescent Current: The module consumes minimal power during operation, which prevents the battery from draining during long periods of storage.
• Compact Design: Its small physical profile allows for direct mounting onto the battery pack or integration into tiny device enclosures.
• Low Internal Resistance: High-quality MOS transistors reduce voltage drops and heat generation during high-current discharge cycles.

Technical Specifications:

• Applicable Battery Type: 3.2 V LiFePO4 (Lithium Iron Phosphate) Cell
• Overcharge Detection Voltage: 3.75 V ±0.05 V
• Overcharge Release Voltage: 3.60 V ±0.05 V
• Over-discharge Detection Voltage: 2.10 V ±0.10 V
• Maximum Continuous Discharge Current: 3 A
• Instantaneous Peak Current: 5 A to 7 A
• Internal Resistance: < 50 mΩ
• Working Temperature Range: −40°C to +85°C

Mechanical Specifications:

• PCB Material: High-quality FR-4 fiberglass
• Mounting: Solder pads for input and output connections
• Component Layout: Single-sided surface mount technology (SMT)
• Durability: Moisture-resistant coating for enhanced environmental protection.

Dimensions:

• Board Length: ≈ 30.0 mm
• Board Width: ≈ 4.0 mm
• Board Thickness: ≈ 2.5 mm
• Weight: ≈ 1.5 g (Ultra-lightweight for micro-electronics)

Pinout and Wiring:

• B+: Connect to the Battery Positive terminal.
• B-: Connect to the Battery Negative terminal.
• P+: Load Positive output and Charging Positive input.
• P-: Load Negative output and Charging Negative input.
• Wiring Note: However, you must ensure that the charger voltage does not exceed the recommended 3.65V charging limit for LiFePO4 chemistry to maintain safety.

Datasheet Reference:

• Download General LiFePO4 Protection IC Datasheet

Commonly Used in:

• Solar LED Lighting: Managing small solar-charged garden lights and pathway markers.
• Portable Power Banks: Serving as the primary management layer for single-cell backup batteries.
• Wireless Modules: Protecting the power source for Bluetooth, Wi-Fi, and LoRa sensor nodes.

Applications:

• Energy Storage Systems: Building small-scale 3.2V energy storage solutions for embedded projects.
• Smart Home Devices: Powering smart locks, wireless doorbells, and security sensors.
• Educational Electronics: Teaching battery management concepts in robotics and STEM kits.

Equivalent Models:

• HY2112-AB: A functionally equivalent IC-based protection module designed specifically for 1-cell LiFePO4.
• S-8211C Series: A high-precision alternative from Seiko Instruments, however, it may require slightly different external MOSFET configurations.
• DW01-P: A common variation often used in similar 1S protection circuits for lithium chemistries.

Package Includes:

• 1 x 1S 3.2V 3A LiFePO4 BMS PCM Battery Protection Board