J5019 3.7V to 9V 5V 2A 18650 Lithium Battery Charge Discharge Integrated Module Type-C

The J5019 Type-C Lithium Battery Charging and Boost Module is a highly integrated power solution designed for DIY electronics and device modifications. It perfectly combines a 3.7V 18650 lithium battery charging circuit with an adjustable step-up (boost) converter, allowing you to seamlessly charge a battery and supply a stable, higher voltage to your circuit diagram from a single, compact board.

This module is incredibly popular for modifying standard multimeters to run on rechargeable lithium batteries, eliminating the need for expensive, disposable 9V batteries. Featuring a modern USB Type-C interface, it can be easily powered by standard phone adapters or power banks. The onboard precision potentiometer lets you dial in the exact output voltage needed (such as 5V, 9V, or 12V) while supporting peak currents up to 2A, making it highly versatile for portable IoT devices and Arduino projects.

Features:

• 2-in-1 Functionality: Integrates both a 3.7V lithium battery charger and an adjustable voltage boost converter on one PCB.
• Modern Interface: Upgraded with a USB Type-C port for reliable, reversible, and ubiquitous power input.
• Adjustable Output: Features a built-in precision potentiometer to easily set output voltages (commonly used for 5V or 9V applications).
• High Power Delivery: Capable of delivering up to 2A of output current (dependent on input/output voltage delta).
• Multimeter Mod Ready: The standard choice for converting traditional 9V multimeters to run on a single rechargeable 18650 cell.
• Compact Footprint: Minimal dimensions make it easy to embed inside existing device enclosures or custom 3D-printed cases.

Package Includes:

1 x J5019 Type-C Battery Charging and Boost Module