Description �� 4S 40A BMS Enhanced Edition specially design kiya gaya hai high power tools (like drill machine), e-bikes, DIY battery packs, aur multi-purpose 14.8V / 16.8V projects ke liye. Yeh BMS balanced version hai, jisme passive cell balancing hota hai jo har cell ka voltage equal rakhta hai aur battery ki life improve karta hai. ✨ Key Highlights: ✅ Enhanced Edition: Extra reliable components for heavy duty load (power tools, drills).✅ 40A High Current Support: Perfect for high torque motors & demanding applications.✅ Balanced Version: Passive cell balancing for long battery life.✅ Complete Protection: Over-charge, Over-discharge, Over-current & Short-circuit safety.✅ Compatible Cells: 18650, 21700, Li-ion 3.7V cells – 4S (14.8V nominal / 16.8V max).✅ Compact & Easy Installation: Small size board – ideal for DIY battery packs. �� Technical Specifications: Battery Type: Lithium-ion (3.7V nominal) Configuration: 4S (4 cells in series) Nominal Voltage: 14.8V Max Charge Voltage: 16.8V Continuous Discharge Current: 40A Protection: Overcharge, Over-discharge, Over-current, Short Circuit Balancing: Yes (Passive Balancing) Applications: Drill Machine, E-Bike, Scooter, Solar, UPS, DIY Packs