IP2326 Charging Controller (2S / 3S, QC3.0, Type-C)

The IP2326 charging controller is a modern module designed for charging 2S (8.4V) and 3S (12.6V) Li-ion battery packs with QC3.0 fast charging support via Type-C input. It provides stable charging current, safety control, and flexible configuration.

Suitable for 18650 battery pack assembly, power banks, cordless tools, and DIY projects.

Key Features

• Supports 2S and 3S Li-ion packs
• QC3.0 fast charging
• Type-C input
• Adjustable charge current (ISET)
• Adjustable voltage (VSET)
• NTC thermistor support
• Charge timer configuration (ROT)
• LED status indication

Operating Modes

2S Mode (8.4V)
Ready to use by default. Simply connect a QC3.0 adapter to the Type-C port.

3S Mode (12.6V)
To enable 3S mode:
• Short the ROV jumper
• Remove resistor 184 (180 kΩ)
No balancing function in 3S mode.

Charge Current Setting (ISET)

Default resistor: 100 kΩ — approx. 0.9–1.0A per cell.

Options:
• 180 kΩ — 0.5A
• 100 kΩ — 0.9–1.0A
• 75 kΩ — 1.2A
• 60 kΩ — 1.5A

Formula:
9000 / R (kΩ) = current (mA)
Example: 9000 / 180 = 500 mA

Voltage Setting (VSET)

Default:
• 8.4V (2S)
• 12.6V (3S)

Options:
• 1 kΩ — 8.1V (2S) / 12.3V (3S)
• 68 kΩ — 8.2V (2S) / 12.4V (3S)
• 120 kΩ — 8.3V (2S) / 12.5V (3S)

NTC Connection

• Replace default 51 kΩ resistor with 82 kΩ
• Connect 100 kΩ thermistor between NTC and GND

Charge Timer (ROT)

Default: disabled (charges until full).

Options:
• 68 kΩ — 4 hours
• 120 kΩ — 12 hours
• No resistor — 24 hours

LED Indication

• Red LED — power connected
• Blue LED blinking — charging
• Blue LED solid — charge complete
• Fast blinking — connection error