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Li-ion Charger - Overview

Li-ion Charger Boards​

These Li-ion battery charger boards offer a simple and safe way to recharge your single-cell 3.7V Li-ion or Li-Po batteries. Powered via USB-C, they handle charging automatically and include status indicators. The version with protection also includes overcharge, overdischarge, and short-circuit protection circuitry—ideal for integrating into portable projects.

Li-ion charger board
Li-ion charger (basic version)
Li-ion charger with protection
Li-ion charger with protection

Which products does this documentation cover?​

Li-ion battery charger

Li-ion battery charger

333013
Li-ion battery charger with protection

Li-ion battery charger with protection

333014

Key Features​

Shared across both versions​

  • Power input: USB-C connector (5V supply)
  • Battery type: Single-cell Li-ion or Li-Po (nominal 3.7V)
  • Charge current: 500mA
  • LED indicators: Charging (red), Full (blue)
  • Form factor: Small and breadboard-friendly

Only on “with protection” version​

  • Overcharge protection
  • Overdischarge protection
  • Short-circuit protection
  • Safe to embed directly into battery-powered circuits

You may also need​

USB-C cable

USB-C cable

Standard cable for powering the charger from USB
Li-Ion Battery

Li-Ion Battery

Small, light, and durable batteries available in various mAh.