3s BMS 10A 12v for 3.7v 18650 Lithium Battery Protection Board

Product Overview: 3S 10A Lithium Battery Protection Board (BMS)

The 3S 10A BMS (Battery Management System) is an essential safety module designed for 11.1V to 12.6V lithium battery packs. It acts as the “brain” of your battery assembly, monitoring three individual 3.7V cells connected in series. It ensures the battery pack remains within safe operating limits, preventing dangerous conditions like overcharging, deep discharge, or short circuits, which is critical for prolonging the life of 18650 cells.

Technical Specifications

Protection Parameters

• Overcharge Detection: 4.25V ± 0.05V (per cell)

• Overcharge Release: 4.15V ± 0.05V (per cell)

• Over-discharge Detection: 2.50V ± 0.08V (per cell)

• Over-discharge Release: 3.00V ± 0.1V (per cell)

• Short Circuit Protection: Automatic recovery after load removal.

• Internal Resistance: Less than 60mΩ.

Short Product Description

• Provides high-accuracy voltage detection for each individual cell in a 3-series configuration.

• Features a three-stage over-current detection circuit to prevent battery damage during high-load spikes.

• Utilizes low-power consumption MOS transistors to maintain high efficiency and minimal heat generation.

• Supports wide operating temperatures ranging from -40°C to +50°C for diverse project environments.

• Designed with a compact footprint to easily integrate into portable power tools, vacuums, or DIY 12V power banks.

Connection Points

• B+: Connect to Battery 3 Positive.

• B1: Connect to the junction between Battery 1 and Battery 2.

• B2: Connect to the junction between Battery 2 and Battery 3.

• B-: Connect to Battery 1 Negative.

• P+ / P-: Output to Load and Input for Charging.