3.7V 4400mAh Rechargeable Lithium-Ion Battery Pack (2S2P IMR 18650) – Li-ion NMC

The 3.7V 4400mAh Rechargeable Lithium-Ion Battery Pack is a high-performance rechargeable battery designed for applications that require reliable power and extended operating time. Built using premium IMR 18650 Lithium-Ion NMC cells in a 1S2P configuration, this battery pack delivers a nominal voltage of 3.7V with a high capacity of 4400mAh, making it ideal for portable electronics, IoT devices, robotics, DIY projects, LED lighting, and backup power applications.

Manufactured with spot-welded nickel strips and insulated output leads, the battery pack offers stable performance, excellent energy density, low self-discharge, and a long service life. Its compact design allows for easy integration into custom battery-powered projects while providing dependable and consistent power output.

Features

• High-capacity 4400mAh rechargeable Lithium-Ion battery pack
• 3.7V nominal output (4.2V fully charged)
• Built using premium IMR 18650 Li-ion NMC cells
• 1S2P cell configuration for increased capacity
• High energy density with lightweight construction
• Stable discharge performance and long cycle life
• Factory spot-welded nickel strip connections
• Pre-attached wires for easy installation
• Low self-discharge for longer storage life
• Suitable for DIY, industrial, and embedded electronics projects

Applications

• IoT and wireless sensor devices
• Arduino, ESP32, ESP8266, and Raspberry Pi projects
• Robotics and automation systems
• Portable electronic equipment
• LED lighting solutions
• GPS trackers and monitoring devices
• Medical and diagnostic instruments
• Battery-powered DIY projects
• Backup power and emergency systems
  

Specifications

• Battery Chemistry: Lithium-Ion NMC (IMR 18650)
• Cell Configuration: 1S2P
• Nominal Voltage: 3.7V
• Fully Charged Voltage: 4.2V
• Battery Capacity: 4400mAh
• Cell Type: IMR 18650 Rechargeable Lithium-Ion Cells
• Rechargeable: Yes
• Output Connection: Pre-attached Leads
• Operating Temperature: -20°C to +60°C (Typical)
• Cycle Life: Up to 500 charge/discharge cycles (typical, depending on usage and charging conditions)
• Protection Circuit: Optional (depends on product variant)