5V Step-Up Power Module with Lithium Battery Charging & Protection (134N3P)

GST

The 5V Step-Up Power Module 134N3P is a compact module that combines 18650 battery charging, battery protection, and 5V boost conversion in a single board. It is commonly used for DIY power banks and portable Arduino projects.

The 134N3P module is an all-in-one power management board designed for single-cell 3.7V lithium batteries. It includes:

Micro USB charging circuit
Battery protection circuit
5V boost converter output
USB output for powering devices

The module charges a 3.7V Li-ion battery (such as an 18650 cell) and boosts the battery voltage to a stable 5V output, making it suitable for powering Arduino, ESP8266, ESP32, and USB devices.

Key Features

3-in-1 design (Charging + Protection + Boost Converter)
Micro USB charging input
Stable 5V USB output
Battery overcharge protection
Battery over-discharge protection
Short-circuit protection
Suitable for DIY power banks

Technical Specifications

Parameter	Value
Input Voltage	5V DC (Micro USB)
Battery Type	3.7V Li-ion / Li-Po
Output Voltage	5V DC
Charging Current	Up to 1A
USB Output Current	Up to 1A (typical)
Protection Features	Overcharge, Over-discharge, Short Circuit