Overview: The TP4056 Dual USB 5V 1A Lithium Battery Charging/Discharging Module is a compact, all-in-one power management solution designed for creating custom power banks or portable charging systems using a single-cell lithium-ion (Li-ion) or lithium-polymer (Li-Po) battery (3.7V nominal). Featuring an integrated LCD display for real-time monitoring of input and output voltage/current, this blue PCB module handles both charging (via micro-USB) and discharging (via two USB-A ports) with built-in safety features. It’s ideal for DIY electronics, emergency power supplies, and mobile device charging, offering up to 90% efficiency in a sleek design.
Key Specifications:
Parameter
Value/Detail
Battery Configuration
1S (single 3.7V Li-ion/Li-Po cell)
Input Voltage (Charging)
5V DC via micro-USB (up to 1A)
Output Voltage
5V DC (fixed)
Output Current
1A max per USB port (total 2A shared)
Charging Current
1A max (adjustable via resistor)
Efficiency
Up to 90% (charge/discharge)
Display
LCD (shows IN/OUT voltage in V and current in A, e.g., “IN 5.0V 1.0A”)
Protection Features
– Overcharge/discharge protection (4.2V/2.5V cutoff) – Over-current/short-circuit protection – Reverse polarity protection (with diode) – Low battery indicator
Dimensions
Approx. 65mm x 25mm x 5mm
Weight
~15g
Operating Temperature
-10°C to +60°C
Connections:
Battery Input (B+/B–): Solder pads or terminals for connecting a 3.7V Li-ion/Li-Po battery (positive to B+, negative to B–; supports up to 3000mAh cells).
Charging Input: Micro-USB port for 5V input from wall adapters or computers.
Output Ports: Two USB-A female ports for discharging to devices (5V/1A each).
Power Switch: Onboard slide switch to enable/disable output.
LCD Display: Automatically updates in real-time; no additional wiring needed.
Features and Benefits:
Real-Time Monitoring: Bright LCD screen displays input/output voltage and current, allowing users to track charging status and battery performance easily.
Dual USB Outputs: Charge two devices simultaneously with smart power distribution for balanced load handling.
Efficient Charging: TP4056 IC provides constant-current/constant-voltage (CC/CV) charging to safely charge batteries without overheating or damage.
Compact and User-Friendly: Pre-assembled board with solder points for easy battery integration, perfect for custom power bank builds.
Safety Protections: Built-in safeguards prevent overcharge, over-discharge, and short circuits, with auto-recovery after faults.
Pass-Through Capability: Supports charging the battery while powering devices for continuous operation.
Applications:
DIY power banks for smartphones, tablets, or cameras.
Portable solar charging solutions.
Emergency power for Raspberry Pi or Arduino projects.
Field electronics like drones or small gadgets.
Custom wearable or portable power supplies.
Note: Use only compatible 3.7V rechargeable Li-ion/Li-Po cells; avoid exceeding 1A per port to prevent overheating.
