Key Features for Electrapac Customers

• 3A Ultra-Fast Charging: While standard modules take 3–4 hours to charge a large 18650, the IP2312 can potentially finish the job in just 1 hour (depending on the battery rating).

• High Efficiency Buck Design: Because it is a switching regulator, it doesn't get as hot as a TP4056 when charging at high currents, making it safer for enclosed DIY projects.

• Dual Voltage Support: The board is set to 4.2V by default for standard Li-ion cells, but can be modified to 4.35V for high-voltage lithium cells by changing the onboard solder bridge.

• Intelligent Charging Phases:

  • Trickle Charge: Safely wakes up deeply discharged batteries.

  • Constant Current (CC): Rapidly fills the battery to 80%.

  • Constant Voltage (CV): Precision tops off the battery to full capacity.

• Compact Size: Despite its high power output, the board remains small enough to fit into custom battery handles or portable enclosures.

Wiring & Configuration

To integrate this into your Electrapac build, follow these connection points:

1. B+ / B- Pads: Solder your 3.7V Lithium battery here. Note: This module does not include discharge protection; it is purely a high-speed charger. For a complete system, use a separate BMS.

2. Input: Connect a high-quality USB Type-C cable to a 5V/3A wall adapter.

3. Current Adjustment: The charging current is set by the R_iset resistor. While it comes set for 3A, it can be adjusted for smaller batteries if you have SMD soldering skills.

4. Voltage Selection: If your battery is a 4.35V type, you must bridge the dedicated "VSET" solder pads on the back of the board.

Primary Applications

• High-Capacity Power Banks: Charging 18650 parallel packs (e.g., 10,000mAh+) quickly.

• Portable Power Tools: Recharging custom lithium packs for DIY drills or saws.

• Fast-Charge LED Torches: Upgrading high-lumen flashlights to modern USB-C fast charging.

• RC Battery Charging: A convenient field-charger for 1S Li-Po batteries used in drones or planes.

• High-Drain Devices: Powering handheld fans or portable vacuum projects that use high-discharge cells.

Why Shop at Electrapac?

We source our IP2312 Modules with high-current rated inductors and genuine ICs to ensure the 3A output is stable and doesn't "sag" during the peak charging phase. At www.electrapac.com, we provide the cutting-edge power modules that save you time and keep your projects moving.