1S 18650 Power Bank Module – 5V 2A Dual USB

The 1S 18650 Battery Management Module is a compact power bank solution designed for building custom rechargeable battery packs using parallel-connected 3.7V lithium-ion cells. It integrates battery charging, protection, and 5V boost conversion into a single board, providing up to 2A output through dual USB ports. The module features multiple protection mechanisms, onboard battery level indicators, and Micro USB charging input for reliable and safe operation. It is suitable for DIY power banks, portable electronics, backup power systems, and battery-powered projects.

Features

Integrated 3.7V to 5V boost converter

Supports 2 to 6 parallel 18650 batteries

Dual USB 5V output ports

Up to 2A output current

Micro USB charging input

Four-level battery capacity indicators

Overcurrent protection circuit

Overvoltage protection

Undervoltage protection

Overcharge protection

Over-discharge protection

High-efficiency power conversion

Compact PCB design

Suitable for custom power bank projects

Compatible with Li-ion battery packs

Specification

Battery Configuration: 1S Lithium-Ion Battery Pack

Supported Batteries: 18650 Li-Ion Cells or Equivalent 3.7V Batteries

Battery Connection: 2–6 Cells in Parallel

Input Interface: Micro USB

Input Voltage: 5V DC

Input Charging Current: 1A or Higher

Output Voltage: 5V DC

USB Outputs: 2 × USB Type-A

Maximum Output Current: 2A

Battery Capacity Indicator: 4-Level LED Display

Boost Converter Function: 3.7V to 5V Step-Up Conversion

Protection Functions: Overcurrent Protection

Protection Functions: Overvoltage Protection

Protection Functions: Undervoltage Protection

Protection Functions: Overcharge and Over-Discharge Protection

Application Type: DIY Power Bank and Portable Power Systems

Tutorials

How to make Power Bank 2xUSB: DIY Portable Charger board JX-887Y at home