DIY

How to make a miniature Power Bank

Hello dear readers and homemade products!
How to make a miniature Power Bank Almost every one of you has a smartphone and other portable gadgets. With the active use of such devices, a situation arises when the battery is practically discharged, and there is no way to replenish the energy supply from the outlet. More recently, phones had removable batteries, and you could carry a charged spare with you.
Of course, an ordinary power bank can easily help out here, but not everyone wants to carry a relatively heavy object, often larger than the gadget itself. In addition, for those who need a smartphone not for games, but for communication, a small-capacity powerbank will suffice.
In this article, the author of the YouTube channel “KJDOT” will tell you how you can make a miniature powerbank that fits in the compartment of a regular wallet.
This homemade product is very simple to make, and easily repeated at home.
Materials needed for homemade products.
– Li-ion battery
– Li-Ion battery charge controller, 5V output
– Charging cable USB
– Solder Sanki 60/40, flux
– Filament for 3D printing
– Sheet acrylic, super-glue 502.
Tools used by the author.
– USB tester FNB48 Fnirsi
– Tabletop mini circular saw
– Soldering station
– 3D printer
– Screwdriver
– Screwdriver with a set of magnetic tips
– “Third hand” with illumination
– Tweezers
Manufacturing process.
The only and main electronic module that will control the battery charge and increase the battery voltage to 5 Volt, the next charge controller will serve.
It has two connectors – a microUSB input for recharging its own battery, and an output in the form of a regular USB.
In order to make the device compact, the author unsolders the USB connector, warming up its contacts with a hair dryer of a soldering station . You can also do this with a regular soldering iron.
 How to make a miniature Power Bank How to make a miniature Power Bank As a battery, the author uses one of the most common old models – BL-5C. It has a built-in protection circuit and a capacity of about 1000 mAh. Instead, you can take an open-frame lithium-ion battery .
Laying all three components side by side and taking measurements, the master designed and printed the case on a 3D printer. You can do without a printer by choosing a box of the right size.
How to make a miniature powerbank (Power Bank )  How to make a miniature Power Bank How to make a miniature Power Bank How to make a miniature Power Bank Now you need to solder the power wires to the “+” and “-” terminals of the battery. Unpackaged batteries have these wires already soldered.
 How to make a miniature Power Bank How to make a miniature Power Bank Next, the author solders wires to pads “B +” and “B-” of the charge controller .
Given that this way the circuit will be powered, this operation should be done last!
< a href = "https://usamodelkina.ru/uploads/posts/2021-05/1621105463_pb-022.jpg" rel = "prettyPhoto">How to make a miniature Power Bank How to make a miniature powerbank (Power Bank ) In place of the removed USB connector, you need to solder only two pieces of wire – plus to the site” V “, And the minus – to the site” G “.
How to make a miniature powerbank (Power Bank )  How to make a miniature Power Bank The free ends of these wires are soldered to the USB connector pins, as it was in the diagram before.
 How to make a miniature Power Bank How to make a miniature Power Bank To test the operation of the assembled circuit, the wizard connects the FNB48 USB tester to the USB output connector. As you can see, the boost converter is working and the required voltage of 5V is present at the output.
How to make a miniature Power Bank How to make a miniature powerbank (Power Bank ) Now you can place elements in the corpus and fix them. The author placed a pad between the connector and the battery so that the connector does not move.
How to make a miniature powerbank (Power Bank )  How to make a miniature Power Bank How to make a miniature powerbank (Power Bank )  How to make a miniature Power Bank The case cover is cut from 2 mm acrylic sheet on a table circular saw.
How to make a miniature Power Bank Holes are drilled in the lid, and it is screwed to the body with six screws.
How to make a miniature Power Bank How to make a miniature powerbank (Power Bank ) Before the first use, the ready-made power bank must be charged. The indicators on the module will inform you about the charging stages.
 How to make a miniature Power Bank the credit card was obtained from the author. It can be easily placed in your wallet.
How to make a miniature Power Bank The capacity of this model will be enough for a “backup” couple of hours of talking on the phone.
The device is connected to the gadget with a standard USB cable .
How to make a miniature Power Bank How to make a miniature powerbank (Power Bank )  How to make a miniature Power Bank Thank the author for a simple diagram of a miniature portable charger (Power Bank). Good mood, good health, and interesting ideas to everyone!
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Author's video can be viewed here.

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