The 3S 10A 12V Battery Management System (BMS) is designed to protect and manage three series-connected 18650 lithium-ion or polymer batteries. It provides essential safety features including overcharge, over-discharge, overcurrent, and short-circuit protection, ensuring reliable and safe battery usage in your DIY and embedded electronics projects. This protection board is suitable for 3S battery packs with a nominal voltage of 11.1V (3.7V × 3) and can handle a maximum charging voltage of 12.6V. Ideal for low-power applications such as LED lighting, solar street lamps, power banks, and more. ✅ Features Supports 3-series lithium battery packs Overcharge / Over-discharge / Short Circuit / Overcurrent protection Suitable for 12V electronic devices, solar lights, rechargeable systems Compact and lightweight Long service life: >30,000 hours �� Specifications Feature Specification Battery Configuration 3S (3 × 3.7V 18650 Li-ion cells) Nominal Voltage 11.1V (3.7V × 3) Maximum Charge Voltage 12.6V Rated Discharge Current 6A – 8A Maximum Current Limit 10A – 13A Resting Current < 30μA Short Circuit Protection Yes Operating Temperature -40°C to 80°C Effective Lifetime > 30,000 hours Internal Resistance < 100mΩ Dimensions Compact, ideal for embedded systems Application 12V LED lights, solar lamps, backups ⚠️ Important Notes Wiring must be done strictly as per BMS layout: B0 → 0V B1 → 3.7V B2 → 7.4V B → 11.1V Always balance the voltage of each cell before connecting. Not suitable for LiFePO4, high-current motors, or electric vehicles. �� Example Applications Rechargeable LED lighting systems Solar-powered lamps Battery-powered gadgets Power backup for routers, monitors, etc. DIY lithium battery packs for electronics
