JX-887Y Power Bank Module – Dual USB Output 5V Boost Charger Board

JX-887Y Power Bank Module – Dual USB Boost Charger Board

Build your own power bank with the JX-887Y — a compact lithium battery charging and boost converter module. It charges a single-cell Li-ion/LiPo battery via Micro USB and simultaneously outputs regulated 5V through two USB-A ports, making it perfect for DIY portable chargers, solar power banks, and backup battery projects.

Key Features

• Dual USB-A output ports (5V charging output)
• Micro USB input for battery charging
• Onboard boost converter (3.7V Li-ion → 5V output)
• Battery charge indicator LED (blue)
• KEY button for power on/off control
• B+ and B− pads for direct battery connection
• Compact blue PCB — 78 × 32mm
• Mounting holes for easy enclosure integration

Specifications

• Model: JX-887Y
• Input: 5V via Micro USB
• Output: 5V via 2× USB-A
• Battery: 3.7V Li-ion / LiPo (single cell)
• Boost Converter: Onboard inductor-based step-up
• Dimensions: 78 × 32mm
• Indicator: Blue LED

Applications

• DIY power bank builds
• Solar battery charger projects
• Portable 5V USB supply
• Arduino / Raspberry Pi battery backup
• Emergency phone charger