J5019 HW-357 Li-ion Charger & Boost Module in Pakistan
The J5019 HW-357 is a multi-functional power module combining Li-ion battery charging and DC-DC boost conversion, making it a perfect choice for electronics enthusiasts, engineers, and DIY hobbyists in Pakistan.
Whether you’re building portable devices, IoT systems, or backup power solutions, this module ensures stable voltage output and efficient battery management.
⚙️ Key Features & Technical Specifications
- Input Voltage: 5V DC (Micro USB)
- Battery Support: 3.7V Li-ion / 18650 battery
- Output Voltage: 5V / 9V / 12V (adjustable boost)
- Charging Current: Up to 1A
- Built-in protection: Overcharge, over-discharge, short circuit
- High efficiency boost converter
- LED indicators for charging and output status
🔌 Applications & Uses
This module is widely used in:
- DIY power banks
- Portable electronics projects
- IoT devices using NodeMCU
- Robotics and automation systems
- Backup power supply systems
- Embedded systems using Arduino
You can explore more compatible boards in our
👉 Arduino and Accessories
👉 Electronics Components
⚡ Why Choose This Module?
- Dual functionality (charger + boost converter)
- Compact and lightweight design
- Ideal for portable power solutions in Pakistan
- Cost-effective solution for students and professionals
⚠️ Precautions
- Use only 3.7V Li-ion batteries (avoid over-voltage batteries)
- Ensure proper polarity during connections
- Avoid short circuits on output terminals
- Do not exceed recommended load current
- Use proper heat dissipation for long-term use
📍 Shop Address (Pakistan)
ElectroWay Pakistan
Online Electronics Store – Delivering in Lahore, Karachi, Islamabad & all over Pakistan with Cash on Delivery available.
📦 Product Summary
The J5019 HW-357 is a reliable and efficient Li-ion charger and boost module designed for modern electronics projects. With its compact size, multiple output options, and built-in protections, it is an excellent choice for DIY enthusiasts and professionals in Pakistan looking for a versatile power solution.
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