Dual USB Power Bank Module 5V 2.4A

Build your own quick-charge power bank from spare 18650 lithium cells with this compact all-in-one DIY Power Bank Charging Module. Combining a battery charger, 5V boost converter, and intelligent digital display on a single PCB, this module gives you everything needed to create a fully functional portable charger without any additional circuitry.

For charging the 18650 battery, the module accepts input via both a Type-C and a Micro USB port at 5V 1A, offering flexibility across different charger cables and adapters. On the output side, two USB ports deliver 5V at 2.4A (Quick Charge) and 5V at 1A simultaneously, enabling fast charging for smartphones, tablets, and other USB-powered devices. A vivid blue LED digital display shows the real-time battery percentage from 0–100%, along with IN and OUT status indicators, keeping you informed at a glance. An onboard flashlight LED connector adds a practical power bank feature right on the board.

Protection circuits guard against overcharge (cut-off at 4.25V), over-discharge (cut-off at 2.9V), and overcurrent conditions, while intelligent auto-stop charging prevents connected devices from being overcharged. Compatible with standard 3.7V 18650 lithium-ion cells — ideal for electronics enthusiasts, makers, and DIY power bank builds.

Specification:

• Battery Compatibility : 3.7V 18650 Lithium-Ion
• Charge Input : Type-C (5V 1A) + Micro USB (5V 1A)
• USB Output 1 : 5V 2.4A (Quick Charge)
• USB Output 2 : 5V 1A
• Total Output Current : Up to 2.5A combined
• Display : Blue LED Digital Display (battery % + IN/OUT indicator)
• Display Size : 27 × 17mm
• Overcharge Protection : Cut-off at 4.25V / Release at 4.10V
• Over-Discharge Protection : Cut-off at 2.90V / Release at 3.00V
• Overcurrent Protection : Yes
• Auto Stop Charging : Yes (when device is fully charged)
• Flashlight LED Connector : Yes (onboard)
• LCD Auto-Off Idle Time : 60 seconds