3S 10A BMS Protection Board 11.1V 12.6V Li-ion Lithium Battery Charger Module 12V 18650 Battery Circuit Board with Overcharge Overdischarge Protection

Product Description This 3S lithium battery BMS (Battery Management System) board provides comprehensive protection for 3-series 3.7V lithium-ion battery packs. It integrates overcharge, overdischarge, overcurrent and short circuit protection functions, effectively extending battery life and ensuring safe use. Features ultra-low quiescent current, compact size and durable workmanship, perfect for DIY 12V battery packs, electric tools, power banks, electric bicycles and other lithium battery applications.

Technical Specifications - Series Configuration: 3S (3 cells in series) - Rated Battery Voltage: 11.1V (10.8V for polymer batteries) - Full Charge Voltage: 12.6V - Continuous Working Current: 5A-8A - Transient Peak Current: 9A-10A - Maximum Discharge Current: 10A - Overcharge Detection Voltage: 4.25V-4.35V ±0.05V per cell - Overdischarge Detection Voltage: 2.3V-3.0V ±0.05V per cell - Quiescent Current: <6μA - Internal Resistance: <60mΩ - Operating Temperature: -40℃ ~ 50℃ - Storage Temperature: -40℃ ~ 80℃ - Service Life: >30,000 hours - Product Size: 50×16×1mm

Core Protection Functions - ✅ Overcharge protection: Prevents battery overcharging damage - ✅ Overdischarge protection: Avoids deep discharge that shortens battery life - ✅ Overcurrent protection: Automatically cuts off power when current exceeds limit - ✅ Short circuit protection: Instantly protects against short circuit faults - ✅ Compatible with all types of 3.7V lithium-ion cells (18650, polymer, etc.) - ✅ Ultra-thin and compact design, easy to install in limited spaces - ✅ Low power consumption, minimal impact on battery standby time

Applicable Scenarios - 3-series 18650 lithium battery packs - 11.1V/12.6V polymer lithium battery packs - DIY power banks and portable power supplies - Electric tools and small household appliances - Electric bicycles and scooters - Solar energy storage systems

Package List 1 × 3S 10A Li-ion Battery BMS Protection Board

Notes 1. Please allow 1-5mm size deviation due to manual measurement 2. Item color may have slight difference due to different monitor displays and lighting conditions 3. Ensure correct polarity when connecting to battery cells, reverse connection will damage the BMS board 4. This board does not include balance function, please use a balanced charger for battery pack charging