How to make a simple 5000 mAh Power Bank from a syringe

How to make a simple 5000 mAh Power Bank from a syringe
Making a Power Bank with a capacity of 5000 mAh is very simple. Everything will take no more than 15 minutes. The body is made of a disposable syringe, and the filling is an updated 18650 series battery with increased capacity and a new power bank converter module that does not require shutdown.

You will need:

Making a simple DIY Power Bank

We cut off the tip of the syringe with a stationery knife.
How to make a simple 5000 mAh Power Bank from a syringe
To avoid soldering to both sides of the battery, use a utility knife to scrape off the insulation. We tinker with a soldering iron.
How to make a simple 5000 mAh Power Bank from a syringe
We solder the wires to the module.
How to make a simple 5000 mAh Power Bank from a syringe
How to make a simple 5000 mAh Power Bank from a syringe
We cut to the minimum and deserve it. Next, solder it to the battery, observing polarity.
How to make a simple 5000 mAh Power Bank from a syringe
How to make a simple 5000 mAh Power Bank from a syringe
How to make a simple 5000 mAh Power Bank from a syringe
To be safe, we isolate it.
How to make a simple 5000 mAh Power Bank from a syringe
We cut the shank of the syringe to size. We remove burrs and irregularities with sandpaper.
How to make a simple 5000 mAh Power Bank from a syringe
How to make a simple 5000 mAh Power Bank from a syringe
Install the battery with the module inside. Instead of a lid, fill the voids with hot glue.
How to make a simple 5000 mAh Power Bank from a syringe
How to make a simple 5000 mAh Power Bank from a syringe
The power bank is ready. We charge it via mini USB.
How to make a simple 5000 mAh Power Bank from a syringe
After charging, you can take the Power Bank with you. It's just enough to fully charge your phone.
How to make a simple 5000 mAh Power Bank from a syringe
As already mentioned: the new module does not need to be disconnected from the battery, since in idle mode it consumes only 8 μA, which is very, very negligible.

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Comments (2)
  1. Sergey K
    #1 Sergey K Visitors 21 March 2021 22:34
    0
    If you have nothing else to do, it will work. Why buy a separate board on Ali and make a fuss if they sell these boards in a case on the same Ali, and for the same money? I once bought single-cell ones and tore out the board from there to fix a 20,000 mAh power bank. By the way, it turns out that the connecting strips rust very well near the sea - a month and the power bank is silent!
  2. Gennady
    #2 Gennady Guests 1 February 2022 16:19
    1
    5000mah, seriously? so on Ali and on 99000 there are already, what are you doing)))) 5000 can only be on 23650 but not 18650. There is a maximum of 3600 real ones.