IP2326 Lithium Battery Fast Charging Module – 2S/3S, 15W

The IP2326 Lithium Battery Boost Charging Module is a compact and efficient solution for charging dual-cell (2S) or triple-cell (3S) lithium-ion or lithium-polymer batteries, leveraging the IP2326 IC from INJOINIC. This module is designed for fast charging applications, delivering up to 15W with a 5V input and supporting output voltages of 8.4V (2S) or 12.6V (3S) at currents up to 1.5A. Featuring a synchronous switching architecture with integrated power MOSFETs, it minimizes the need for external components, reducing both size and BOM cost. The module operates at a 500kHz switching frequency, achieving a conversion efficiency of 94% at 8V/1A and 92% at 8V/1.5A, making it ideal for power bank designs, portable devices, and DIY charging circuits.

Key features include adjustable charging current, voltage, input undervoltage threshold, input overvoltage threshold, and charging timeout threshold via external resistors, offering customization for specific battery requirements. It integrates a charge balancing circuit to monitor and balance the voltage of each cell during charging, enhancing battery longevity and safety. The module also supports an NTC (Negative Temperature Coefficient) protection function for temperature monitoring when paired with an NTC thermistor. Input voltage limiting intelligently adjusts charging current to prevent adapter overload. For Arduino or microcontroller use, connect the module’s input (e.g., Type-C or soldered pads) to a 5V power source, output to the battery pack, and use a thermistor for thermal protection. This RoHS-compliant module, typically sized around 32x18x5mm, operates effectively from -40°C to +150°C (IC spec) and is best suited for indoor, controlled environments.

Note: A separate BMS (Battery Management System) is recommended for over-discharge protection, and thick wires (≥2A capacity) should be used for battery connections to handle the current.