3.7V to 5V/9V Boost Converter Module – 18650 Lithium Battery Charging & Discharge All-in-One Adjustable Power Module (2A)

3.7V to 5V/9V Boost Converter Module – 18650 Lithium Battery Charging & Discharge All-in-One Adjustable Power Module (2A). 

Product Description

This compact power module integrates charging, boost conversion, and discharge functions in one unit. Designed for 18650 lithium batteries, it can step up a 3.7V battery to 5V or 9V output, making it ideal for DIY multimeter upgrades, portable devices, and electronics projects. The adjustable module supports up to 2A output, providing stable and efficient power conversion for various applications.