Looking for a simple DIY Mi Band 3 charger solution? This easy homemade charging method saved my fitness tracker when the original charger broke. The principle is straightforward – you just need a USB cable and a way to connect it to the charging contacts on your Mi Band 3.
When my original Xiaomi charger stopped working, I needed a quick fix without waiting for shipping. This DIY Mi Band 3 charger worked perfectly and cost almost nothing to make.
What You Need for Your DIY Mi Band 3 Charger
The materials required for this project are minimal:
- Old USB cable (preferably one you don’t mind cutting)
- Small binder clip or paper clip
- Scissors or wire cutters
- Electrical tape
How to Make Your DIY Mi Band 3 Charger
Follow these simple steps to create your own charger:
Step 1: Prepare the USB Cable for Your DIY Mi Band 3 Charger
Cut the non-USB end of your cable to expose the wires inside. You’ll typically find four wires: red (5V power), black (ground), and two data wires (often green and white). For charging, we only need the red and black wires.
Step 2: Connect to the Mi Band 3
Strip about half an inch of insulation from the red and black wires. The red wire connects to the positive contact on your Mi Band 3, while the black wire connects to the negative contact.
Step 3: Create Contact Points
The trickiest part is maintaining steady contact with the charging points on the Mi Band 3. I used a small binder clip to hold the wires against the charging contacts. This provides enough pressure for a reliable connection while charging.

Tips for Using Your DIY Mi Band 3 Charger
Here are some helpful tips for using your homemade charger:
- Check that your Mi Band 3 shows the charging icon after connecting
- Avoid using frayed or damaged USB cables for safety
- Use electrical tape to secure connections if needed
- Charge on a non-conductive surface to prevent shorts
This DIY solution works in a pinch, but if you use your Mi Band 3 regularly, you might want to order a replacement charger from Amazon or AliExpress for more convenient daily use.
Why Make a DIY Mi Band 3 Charger?
There are several benefits to making your own charger:
- Save money compared to buying a replacement
- No waiting for shipping
- Reduce electronic waste
- Learn basic electronics principles
Have you tried making your own charger for a fitness tracker? Share your experience in the comments below!