5S Type-C Li-ion Battery Charger Module 2A – 5V to 21V Boost Board for DIY Projects

Powerful Charging for Your 21V Projects

• Do you need to charge a 21V battery pack? Do you want to use a standard phone charger? This 5S Type-C Li-ion Battery Charger Module is the perfect tool for you.
• It is a high-efficiency boost converter. It takes 5V from a USB Type-C port and increases it to 21V. This makes it easy to charge 5-series (5S) lithium batteries anywhere.

Why Choose This 5S Charger?

1. USB Type-C Convenience : You don’t need expensive and bulky 21V adapters. Simply use your existing smartphone charger or a power bank. It saves money and space.
2. Smart Boost Technology : The board uses an intelligent step-up circuit. It provides a stable 21V output. This is the exact voltage needed for a full charge on a 5S battery pack.
3. Ideal for Repairing Tools : Many cordless drills use 18V or 21V batteries. If your charger is lost, this module is a great replacement. It is perfect for DIY electronics and hobby projects.
4. Clear LED Status : The built-in LEDs show the charging status. You will know exactly when the battery is full and ready to use.

Technical Specifications:

How to Connect:

• Input: Plug in a Type-C USB cable.

• BAT+ : Solder to the Positive (+) of your 21V pack.

• BAT- : Solder to the Negative (-) of your 21V pack.

⚠️ Important Safety Note:

This is a boost module. The charging speed depends on your phone charger’s power. For best results, use a 5V 2A or 3A adapter. Always check your battery polarity before soldering.