The Dual Micro USB 3.7V to 5V 2A Boost Mobile Power Bank DIY charger is designed for 18650 lithium batteries, providing a convenient way to create a custom power bank. It features dual USB outputs and LED indicators for power status, along with built-in protections against over-current, over-voltage, and under-voltage.

Features

• LED Indicators: Show power status and automatically shut down when not used.
• Dual USB Output: Allows for multiple devices to be charged simultaneously.
• Built-in Protection IC: Provides over-current, over-voltage, and under-voltage protection.
• Versatile Input/Output: Supports various rechargeable batteries and devices.

Specifications

• Input Port: MicroUSB
• Input Requirements: 5V constant voltage power supply, optimal with 5V1A or higher chargers
• Output Port: USB
• Output Parameters: 5V1A/5V2A
• Size: 8 x 32 x 69 mm (H x W x L)

Battery Requirements

• Compatible Batteries:
  • 18650 battery
  • Cell phone battery
  • Flat battery
  • MP3 battery
  • 3.7V-4.2V polymer lithium battery (single section or parallel, not series)
  • Can be paralleled 2-6 18650 batteries
• Incompatible Batteries:
  • Dry batteries
  • 1.2V rechargeable batteries
  • Nickel-metal hydride batteries
  • 3.2V lithium iron polymer batteries

Installation Notes

• Parallel Connection: Batteries must be connected in parallel with a voltage range of 3.2V-4.2V.
• Correct Installation: Connect the battery's positive to B+ and negative to B-. Incorrect installation can damage the motherboard.
• Battery Consistency: Do not mix old and new batteries, different models, or inconsistent brands.

Package Includes

• 1 x Dual Micro USB 3.7V to 5V 2A Boost Mobile Power Bank DIY 18650 Lithium Battery charger