100W power bank A57 DIY kit for 4x 21700 batteries with USB-C cable

Product detailed description

DIY kit for a 100W power bank for 4× Li-Ion 21700 allows you to assemble a powerful portable power source with support for modern fast charging protocols USB-C PD and QC. The module is equipped with an integrated display showing the charge status, voltage, and current during charging and discharging. The construction includes pre-assembled electronics, a protective BMS module for series connection of cells, and a built-in USB-C cable for convenient use. An ideal solution for building your own powerful power bank for laptops, phones, tablets, or other USB devices.

Specifications:

• Product Type: DIY power bank kit (case + electronics)
• Model: A57
• For cells: 4× Li-Ion 21700
• Cell connection: 4S
• Dimensions: 157.8 × 56.5 × 42 mm
• Colour: grey
• Display: Digital LED indication of capacity, voltage, and current
• Case material: plastic
• Built-in cable: USB-C / Type-C
• USB-C Output:
  • 5V: 3A
  • 9V: 3A
  • 12V: 3A
  • 15V: 3A
  • 20V: 5A
• USB-A Output:
  • 5V: 3A
  • 9V: 2A
  • 10V: 2.25A
  • 12V: 1.5A
• USB-C Input:
  • 5V: 3A
  • 9V: 3A
  • 12V: 3A
  • 15V: 3A
  • 20V: 3.25A
• Fast charging support: PD / QC

Package contents:

• Front part of the case with electronics
• Rear cover of the case
• BMS protection board for 4× 21700
• Built-in USB-C cable
• USB charging cable
• Nickel strip
• Insulating and fixing pads

Note:

• The product is not a standalone functional unit and requires professional assembly, soldering of battery cells, and electrical engineering knowledge.
• Photos are for illustrative purposes only and may differ slightly from the actual appearance of the product without changing its properties.
• 21700 batteries are not included in the package.