3S 40A 12.6V Cell 18650 Li-ion Lithium Battery Charging BMS Board Balanced Charging Module

The 3S 40A Li-ion Battery BMS is a reliable charging and protection module designed for 18650 lithium battery packs. It ensures balanced charging, overcharge, over-discharge, and short-circuit protection to extend battery life and improve performance. Perfect for DIY battery projects, e-bikes, power tools, and solar energy setups. Buy online in Pakistan at the best price with fast delivery.

Key Features:

• Supports 3S 12.6V Li-ion battery packs with automatic recovery function.
• Compatible with 18650, 26650, and polymer lithium batteries.
• Provides balanced charging for enhanced battery lifespan and stability.
• Built-in protection against overcharge, over-discharge, and short circuits.

Technical Specifications:

• Size: 42 x 60 x 3.4 mm (balanced version)
• Weight: 9.8 g
• Charging Voltage: 12.6V – 13.6V
• Continuous Discharge Current: 40A (reduce load if cooling is insufficient)
• Continuous Charge Current: 20A

Package Includes:

• 1 × 3S 40A Li-ion Battery Protection BMS PCB Module

Important Notes:

• Use high-quality cells: three 15C–20C power batteries or six 10C–15C cells for heavy load usage.
• Follow correct wiring connections: 0V, 4.2V, 8.4V, and 12.6V to prevent damage or short circuits.
• When used with brush motors, connect a non-polar capacitor (10µF–100µF, ≥25V) to prevent reverse voltage spikes.
• Ensure all batteries have equal voltage levels before connection for stable and balanced performance.