The Power Bank Charging Module with Display is an all-in-one battery management and boost converter module designed to build DIY power banks using single-cell lithium-ion or lithium-polymer batteries. It handles battery charging, protection, voltage boosting, and output regulation while providing real-time status information through an onboard digital display. This module is ideal for portable power solutions, DIY power banks, and embedded backup power systems.
Core Module Specifications
• Module Type: Power bank charging and boost converter module
• Battery Type Supported: Single-cell Li-ion / Li-Po (3.7 V nominal)
• Functionality: Charging, protection, boost conversion
• Display Type: Onboard digital LED display
Electrical & Interface
• Battery Input Voltage: 3.0 V – 4.2 V
• Charging Voltage: 5 V DC (USB input)
• Output Voltage: 5 V DC regulated
• Output Current: Typically up to 2 A (module dependent)
• Charging Control: Integrated lithium battery charger IC
• Protection Features: Overcharge, over-discharge, short-circuit
Performance Characteristics
• Real-time battery percentage or voltage display
• Stable 5 V output for USB-powered devices
• Efficient boost conversion from battery voltage
• Automatic power management during charge/discharge
Physical Characteristics
• Module Type: Compact PCB-mounted power module
• Display: Numeric LED indicator
• USB Ports: Input and output USB connectors (variant dependent)
• Lightweight and enclosure-friendly design
Compatibility
• 18650 lithium-ion batteries
• Lithium polymer pouch cells
• USB-powered devices (phones, IoT boards, accessories)
• DIY power bank enclosures
• Embedded portable electronics
Key Advantages
• Integrated charging and boosting in one module
• Visual battery status indication
• Simple wiring for DIY power banks
• Built-in safety protection circuits
Technical Insights
• Designed for single-cell batteries only
• Output current capability depends on battery quality
• Heat dissipation required at high load currents
• Battery must include or rely on module protection
Applications
• DIY power banks
• Portable USB chargers
• Backup power supplies
• Battery-powered IoT devices
• Educational and hobby electronics projects
Pro Tip
• Use high-quality 18650 cells for best performance
• Ensure proper ventilation in enclosure
• Do not exceed rated output current
• Fully charge battery before first use
Package Includes
• 1 × Power Bank Charging Module with Display