2S 10A 18650 Lithium Battery Protection Board

2S 10A 18650 Lithium Battery Protection Board is a compact and efficient Battery Management System (BMS) designed for 2-cell (2S) lithium-ion or LiFePO4 battery packs. It offers essential protections like overcharge, over-discharge, overcurrent, and short-circuit protection, ensuring longer battery life and safe operation in DIY and portable power applications.

Key Features:

• Supports 2S lithium-ion (7.4V) or LiFePO4 packs
• Integrated overcharge and over-discharge protection
• Overcurrent and short-circuit protection with auto-recovery
• High efficiency MOSFET switching design
• Low quiescent current for minimal battery drain

Technical Specifications:

• Battery Type: 2S Lithium-ion / LiFePO4
• Input Voltage: 8.4V Max
• Charge Current: 0-5A (recommended), Max 10A
• Discharge Current: 0-5A (continuous), Peak 10A
• Overcharge Detection Voltage: 4.25 ± 0.05V per cell
• Over-discharge Detection Voltage: 2.5 ± 0.1V per cell
• Short-Circuit Delay: <250μs

Mechanical Specifications:

• PCB Material: FR4-grade glass epoxy
• Surface Mount Components (SMD)
• Pre-soldered pads for easy wiring
• High current copper traces with thermal relief

Dimensions:

• Length: 45mm
• Width: 15mm
• Thickness: 3mm (approx.)
• Mounting Holes: Not provided

Mounting Options:

• Adhesive Tape (double-sided) for enclosure integration
• Can be embedded inside battery packs
• Wire connections via solder pads: B+, B-, P+, P-, B1

Schematic Diagram, Connection, Wiring and Pinout:

• B+ → Connect to positive of 2nd cell
• B- → Connect to negative of 1st cell
• B1 → Junction between Cell 1 and Cell 2
• P+ / P- → Output terminals for load/charger
• Ensure correct polarity to avoid board damage

Datasheet/User Manual:

• 2S 10A BMS Board PDF Manual and Wiring Guide

Applications:

• DIY Power Banks
• Electric Tools and Toys
• Solar and Backup Power Packs
• Portable Audio Systems and Bluetooth Speakers
• E-bike and e-scooter battery protection

Equivalent:

• HX-2S-A01: Similar 2S BMS with 10A output
• DW01 + 8205A based BMS modules
• 3S version available for 11.1V packs (not interchangeable)

Package Includes:

• 1 x 2S 10A 18650 Lithium Battery Protection Board