
If you happen to have a Bluetooth earphone set but do not know its model and did not receive a charging case with it, you may be able to listen to music for several hours after fully charging it. However, once the battery runs out, you cannot recharge it because you do not have a charging case. At this point, you may get the idea of making a charging case yourself.
If you happen to have a beverage bottle cap, you can first drill a hole in the cap so that the earphone speaker can pass through it.

For the charging pins, you can use the electrodes from a telephone jack.

Then, you can install a charging connector.

You can pass the earphone earpiece through the hole in this way.

The charging connector and charging pins can then make direct contact with the Bluetooth earphones.

The DIY charging stand is now complete, and the earphones are charging.
