USB Cellphone Charger Cable

by dleithinger

5.5K27

Intro: USB Cellphone Charger Cable

I have a recently moved to the US, but my cellphone charger has a British plug. Therefore I have use an adapter, which makes the whole thing very cumbersome to carry around. As I always have some USB outlet like my laptop around anyways, I got the idea to make a USB version for charging the phone.

STEP 1: Check the Power Adapter Voltage

Check what voltage the power adapter generates. For my Samsung model it is 5V DC, which is just what we want.

STEP 2: Cut the Cables

STEP 3: Check Voltages

STEP 4: Soldering

The little black insulating pieces are heat shrinkable tubing, which is very convenient. Just don't forget to put it on there.

STEP 5: Charge Phone

Hooray, it works!

7 Comments

corpseprodder 15 years ago

Is 5.3v always to be expected form a usb out or is there any way to < or > the voltage output. Or is this a daft question?

dleithinger 15 years ago

According to the specification of USB, you get 5 V±5% with 100 mA per device from a port. However, your cellphone might require a different voltage, so best check the power supply first. It should state the voltage on a label.

xrobevansx 15 years ago

You can get a US cell phone charger at dollar stores. I have a Samsung A900, that's where I got mine.

santy22 15 years ago

where's the fun in that?

evanwehrer 15 years ago

What phone is that? IT looks like the same OS as my samsung phone.