The 3S 12.6V 2A Type-C Boost Li-ion Battery Charger Module is a high-performance power management solution designed to charge a 3-cell (3S) lithium battery pack from a standard 5V USB source. At Electrapac, we recommend this module for makers in Bangladesh building portable power banks, DIY Bluetooth speakers, and handheld electronics that require a steady 12.6V charge from a common Type-C phone charger or power bank.

This module utilizes sophisticated Step-Up (Boost) technology to convert the 5V input from a USB Type-C port into the 12.6V required to fully charge three Li-ion cells in series. Unlike traditional chargers that require a bulky 12V-15V DC adapter, this board allows you to use your existing mobile charger. It features an integrated charging controller that manages the constant-current/constant-voltage (CC/CV) profile necessary for lithium battery safety. 

Key Features for Electrapac Customers

• Type-C Convenience: Use any standard USB-C cable and 5V/2A+ adapter to charge your high-voltage battery packs, eliminating the need for specialized 12.6V wall adapters.

• Intelligent Charging Protection: Includes built-in over-voltage protection, short-circuit protection, and over-temperature shutdown to ensure your 18650 or Li-Po cells stay safe.

• High Efficiency: The synchronous boost converter design ensures minimal energy loss and low heat generation during the 2A charging cycle.

• LED Status Indicators: Features on-board LEDs to provide clear visual feedback

  • Red/Flashing: Charging in progress.

  • Blue/Solid: Charging complete/Standby.

• Compact Integration: The slim PCB design allows it to be easily tucked into small project enclosures or 3D-printed battery cases.

Setting up the Electrapac 3S Boost Charger is straightforward, but correct battery configuration is essential:

1. Input: Connect a high-quality USB Type-C cable to a 5V/2.4A or higher power adapter.

2. Battery Connection: * Connect the B+ pad to the positive terminal of your 3S battery pack (12.6V point).

   • Connect the B- pad to the negative terminal of your 3S battery pack (0V point).

3. Heat Management: While the module is highly efficient, the 2A charging process creates heat. Ensure the module is placed in a ventilated area or attached to a small heat sink if used inside a sealed box.

Pro-Tip: To get the full 2A charging speed, make sure your input USB power source is capable of delivering at least 15W–20W. If your 5V adapter is weak, the charging time will increase significantly.

• Portable Power Tools: Recharging DIY 12V battery packs for drills or handheld fans.

• Bluetooth Speakers: Powering high-wattage 12V amplifiers while providing a simple USB charging port.

• Outdoor Lighting: Managing 12V LED camping lights that can be recharged via a car USB port or solar power bank.

• RC Gear: Charging 3S Li-Po batteries for drones or RC cars from a field-portable USB source.

• Uninterrupted Power Supplies (UPS): Building small 12V backup systems for routers or modems.

We source our 3S Boost Charger Modules with high-current inductors and quality capacitors to ensure stable voltage translation without "noise" or ripple. Visit us at www.electrapac.com for the power solutions that keep your 12V projects mobile and easy to recharge.