This module charges 18650 lithium-ion battery, it also boosts battery voltage to a stable 5V/2A output, using 18650 lithium-ion battery
This module safely charges and discharges a single 18650 lithium-ion battery. Connect the battery using the + and − pads or a compatible battery holder. Charging is done through the USB-C or USB-A input, while a regulated 5V output powers USB devices. Please see image below.
It features built-in overcharge, over-discharge, and short-circuit protection to prevent battery damage and make lithium battery use safer. The module also supports 5V regulated input from USB power supplies or small solar panels via the USB port.
Features:
Charging Mode:
- Charges single-cell 18650 lithium-ion batteries (3.7V nominal, 4.2V max) via USB-C or USB-A input
- Supports charging current up to 2.4A for fast and safe charging
- Automatic charging termination when battery reaches full capacity
- Low-voltage pre-charge for batteries below 2.8V to protect battery health
- Automatic recharge cycle when battery voltage drops below 4.1V
- Boosts 18650 battery voltage to a stable 5V output suitable for USB devices
- Provides up to 2A output current with high conversion efficiency (92.5%)
- Supports simultaneous discharging and charging
- Automatic shutdown when load current drops below 50mA to save power
- Built-in protections for overcurrent and low voltage
- Ideal for DIY power banks and portable electronics, this module supports discharging while charging, low-voltage protection, and automatic shutdown to save power at low loads.
