3S BMS 18650 Li-ion Battery Protection Board 11.1V 12.6V

3S BMS – 18650 Li-ion Battery Protection Board

Keep your lithium-ion battery packs safe and efficient with this 3S BMS (Battery Management System) module. Designed for 3-cell series 18650 Li-ion packs, it provides essential protection against overcharge, over-discharge, and short circuits.

• Configuration: 3S (3 cells in series) – 11.1V nominal / 12.6V fully charged
• Protection features: Overcharge, over-discharge, overcurrent & short circuit protection
• Built-in MOSFETs for efficient switching and low heat generation
• Compact PCB design with clearly labeled B+, B-, P+, P- terminals
• Ideal for DIY power banks, e-bikes, solar storage, and robotics projects
• Compatible with standard 18650 Li-ion battery cells