Ansmann Li-Ion Battery Pack 2S2P 7.2V 5100mAh 4x 18650 with Cable & BMS

Need a reliable, high-capacity rechargeable power source for your custom electronics project? The Ansmann Li-Ion Battery Pack 2S2P delivers 7.2V and 5100mAh using four 18650 cells in a 2-series, 2-parallel configuration. An integrated Battery Management System (BMS) protects against overcharge, over-discharge, overcurrent, and short circuits, ensuring safe operation and long service life. The pack is terminated with a cable with open wire ends for flexible integration.

Who is it for

This battery pack is ideal for hobbyists, engineers, and manufacturers building portable devices, robotics, medical equipment, or any application requiring a compact, high-energy lithium-ion power source with built-in protection.

Main features

• 2S2P configuration with four 18650 Li-Ion cells
• Nominal voltage: 7.2 V
• Capacity: 5100 mAh (36.72 Wh)
• Integrated BMS for overcharge, over-discharge, overcurrent, and short circuit protection
• Cable connection with open wire ends
• Recommended max charge current: 2.5 A
• Max discharge current: 5.1 A
• Cycle life: >300 cycles to 80% capacity

Specifications

• Battery technology: Lithium-Ion (Li-Ion)
• Nominal voltage: 7.2 V
• Capacity: 5100 mAh
• Energy content: 36.72 Wh
• Cell configuration: 2S2P
• Number of cells: 4
• Cell size: 18650
• Integrated BMS: Yes
• Connection type: Cable (open wire ends)
• Max charge current: 2.5 A (recommended)
• Max discharge current: 5.1 A
• Operating temperature (charge): 0°C to +45°C
• Operating temperature (discharge): -20°C to +60°C
• Cycle life: >300 cycles (to 80% capacity)
• Self-discharge rate: <5% per month

Tips

Always use a charger designed for 2S Li-Ion packs and respect the recommended charge current. Ensure proper polarity when connecting the open wire ends, and consider adding your own connector for easy replacement. Store the pack at partial charge in a cool, dry place when not in use.