How do DIY make USB mobile charger?

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How do DIY make USB mobile charger?

We may have experienced the anxiety when the power of mobile phone is inorganic. Like mobile phone, mobile phone charger is one of the most indispensable electronic products. If you happen to have some extra 9V batteries, you can enjoy DIY mobile charger according to this article...

Maybe we all have the experience: on the journey, on the bus, on the train... When you need to use a mobile phone urgently, but you feel anxious because it only has a few percent of the power left. Then we think that the mobile phone charger is the most useful technology in the world.

So it's not too much for a person to have two or three spare chargers. Although it is easy to buy batteries from the Internet, it will be more interesting if you do it yourself. So how to DIY self-made USB mobile phone charger?

The core component of DIY battery pack is a USB mobile phone charger, powered by 9V battery, plus a beautiful aluminum shell. The aluminum shell can be made from a jar of mints.

However, it should be noted that most 9V batteries have a charge capacity of about 550mah, only half of the current capacity of smart phones. Compared with the usually safer and more reliable rechargeable battery pack, this kind of battery pack is more prone to errors due to disordered wiring. If you have some extra 9V batteries, consider making a DIY charger for emergency use.

What materials do DIY need to prepare for its own USB mobile charger? The details are as follows:

A USB Car Charger, which is the core of DIY battery pack. Any model can be used. I bought it from a gas station for several dollars;

A 9-volt battery clamp, which looks like a black mat, has two clips to connect the battery and the protruding wires. It is mainly used to fix the 9V battery for the charger;

One or two 9V batteries;

A soldering iron for welding wires to a charger;

A tin can of mints;

Some of the necessary tools (pliers, hammers, nails) are used to punch holes in one side of the tin can, and some electrical tape holds things in place.

DIY self made USB mobile charger steps:

When all the materials are ready, it's easy to make them.

First, use pliers to open the plastic shell of the car charger and take out the internal hardware.

Locate the USB port that connects to the circuit board.

Next, heat the soldering iron and weld the lead firmly to the charger. The red wire (positive) is connected with the spring, and the black wire (negative stage) is connected to any side piece. Don't get it wrong!!!

Theoretically, the DIY charger has been completed by this time. However, it is not beautiful to expose these power wiring and do not install it, so it is better to install a shell.

Use a hammer and nail to carefully punch some holes in one side of the mint jar, and use pointed nose pliers to widen it until it is enough to let a USB port through. Finally, stick everything with electrical tape, put on the battery and connect the wires, and the mobile phone charger will be ready.

Let's see what American netizens have to say about this homemade mobile phone charger.

Humaniofearth: why use a disposable 9V battery? That's a terrible idea!

Narom: it's possible that he used a rechargeable battery pack, just forgot to charge it!

sniperboy：9V？ The only device I can think of that uses a 9V battery is a smoke alarm. Even the AM / FM radio in my pocket is 2A.

Tom Warren: just buy a charger on Amazon. It's so troublesome!

Mistermix: the alkaline 9V battery is 550mah, and it can charge 1 / 4 at most. Where is half of it?

Murso74: 9V batteries cost 10 yuan each, right? Even if you have extra 9V batteries, using them to charge the phone to 25% is a waste!