18650 2S1P/2S2P Li‑Ion Battery Pack – 3.7 V for Audio Devices

🔋 3.7V 18650 Li-Ion Battery Pack – 2S1P/2S2P for Audio Devices & Portable Electronics

Customization available upon request. Please contact customer service.

Power your portable speakers, scanners, medical, or IoT devices with this reliable 3.7V rechargeable battery pack, available in multiple configurations for optimal performance and extended runtime.

Available Configurations

• 2S1P (single cell pair) - Compact design for space-limited applications
• 2S2P (double cell pair) - Extended capacity for longer runtime

Key Technical Specifications

• Nominal Voltage: 3.7V 
• Capacity Options: 2000mAh
• Battery Type: Li-Ion 18650 cells
• Built-in PCB Protection: Overcharge, over-discharge, short-circuit & over-current protection
• Cycle Life: 500+ charging cycles for long-lasting performance
• Operating Temperature: Wide range -20°C to 60°C
• Safety Certifications: CE, RoHS, UN38.3, IEC62133 compliant

Perfect Applications

This versatile 3.7V battery pack is ideal for:

• Portable audio speakers & sound systems
• Megaphones & PA systems
• GPS navigation units
• Medical monitoring devices
• LED lighting systems
• IoT devices & sensors
• Power tools & equipment
• Emergency backup power

Quality Assurance & Warranty

• ✅ 100% brand new, factory tested before shipping
• ✅ Professional-grade Li-Ion cells for reliable performance
• ✅ 1-year manufacturer warranty
• ✅ Fast worldwide delivery via BatteryMall
• ✅ Technical support available

Choose the right configuration for your device and enjoy reliable, long-lasting power with our premium 18650 battery packs!