7.4V 1800mAh 18650 Lithium-ion Battery Pack with Built-in BMS Protection for Portable Devices

Overview

This 7.4V 1800mAh 18650 lithium-ion battery pack is assembled with high-quality 18650 cells in a 2-series configuration, delivering a nominal 7.4V output and 1800mAh capacity for small portable devices. The integrated BMS ensures safe charging and discharging, while the pre-attached red and black wires enable convenient wiring and replacement.

Key Features

✅ Nominal Voltage: 7.4V

✅ Nominal Capacity: 1800mAh

✅ Cell Type: 18650 Lithium-ion Cells

✅ Configuration: 2S (2 Series)

✅ Built-in BMS Protection

✅ Pre-wired Red/Black Output Leads

✅ Compact Cylindrical Shape

✅ Stable Discharge Performance

✅ Long Cycle Life

Specifications

Item	Parameter
Nominal Voltage	7.4V
Nominal Capacity	1800mAh
Cell Type	18650 Li-ion
Configuration	2S
Protection	Built-in BMS
Output	Red / Black wires
Outer Cover	Blue heat-shrink tube

Application Scenarios

🔹 Portable LED lights and small lighting systems

🔹 Monitoring cameras and wireless security devices

🔹 Portable electronic instruments

🔹 Small industrial equipment

🔹 RC models and hobby devices

🔹 Custom DIY power supplies

🔹 Handheld testing devices