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DIY Power Bank with Fast Charging

May 31, 2025

Power Bank Construction with Fast Charging Feature

Introduction

  • Host: Van Blues
  • Topic: Building a power bank with fast charging capability.
  • Previous Projects: Used acrylic for casing and PVC pipe for structure.
  • Call to Action: Encourage viewers to subscribe.

Materials Needed

  • Battery Holders:
    • Two 18650 battery holders (soldered in parallel).
  • Casing:
    • Used acrylic and PVC pipe for construction.
  • Adhesives:
    • Korean glue for securing components.
  • Testing Tools:
    • Voltmeter and ammeter for monitoring voltage/current.
  • Charging Modules:
    • Quick charging module (supports fast charging).
    • 3 ampere charging module for 18650 batteries.
  • Battery Indicator:
    • 1S to 8S battery indicator for voltage display.
  • BMS:
    • BMS 1S 15A for battery protection.

Step-by-Step Construction

  1. Soldering Battery Holders:
    • Connect positive to positive and negative to negative.
    • Ensure soldering quality.
  2. Preparing the Casing:
    • Use PVC pipe to create a hole for components.
    • Paint the casing for aesthetics.
  3. Installing Voltmeter:
    • Solder cables correctly; ensure correct orientation of the voltmeter.
    • Adjust positions for readability.
  4. Connecting Charging Module:
    • Attach output cables to voltmeter for monitoring.
    • Solder connections carefully.
  5. Adding Charging Module:
    • Solder positive and negative connections; cut excess cable lengths.
  6. Installing Indicators and On/Off Switches:
    • Place battery indicator and on/off switch in casing for user control.
  7. Final Assembly of BMS:
    • Connect BMS to battery holders for protection.

Testing the Power Bank

  • Initial Test:
    • Check the charging status of the battery (red light indicates charging).
  • Voltage Check:
    • Monitor output voltage on the voltmeter (5.1 volts observed).
  • Final Testing:
    • Test charging capability with a cellphone.
    • Observed voltage increase from 5 volts to 9 volts indicating successful fast charging.

Conclusion

  • Encourage viewers to engage by subscribing, liking, sharing, and commenting.
  • Tease future videos on similar projects.

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