Easy Portable USB Charger

23,611

177

23

Introduction: Easy Portable USB Charger

Tutorial to show how to make a quick, cheap and easy portable USB charger for around $10 without knowing how to build complex circuits!

Used the following products:

USB Car Charger (Dollar Store)
8 AA Battery Holder (Radioshack)
8 AA Batteries (Dollar Store)
Project Enclosure (Radioshack)

Be the First to Share

    Recommendations

    • Battery Powered Contest

      Battery Powered Contest
    • Plywood Challenge

      Plywood Challenge
    • Plastic Contest

      Plastic Contest

    23 Discussions

    0
    JenniferR72
    JenniferR72

    4 years ago

    would it work to make it without a switch?

    0
    cheezyguy5
    cheezyguy5

    6 years ago on Introduction

    Great Idea! but, you only need 7.2 volts to run the car charger, so you could do this with only 6 batteries.

    0
    sparovv
    sparovv

    6 years ago on Introduction

    Can i make it with only 4 pcs LSD rechargeable battery?

    0
    ozmor
    ozmor

    6 years ago on Introduction

    excellent, but what if you wanted to add rechargeable batteries and a solar panel? circuit of the car is a great idea!... Might add an optional diagram!?

    0
    stubbsonic
    stubbsonic

    6 years ago on Introduction

    One little problem with this build was toward the end where the wire leads coming from the battery pack (the junctures with the extensions) were exposed so that they could potentially short. All they need is a little shrink tubing or some tape.

    0
    elliottwood2
    elliottwood2

    7 years ago

    What size is the project enclosure

    0
    Mattkim
    Mattkim

    7 years ago on Introduction

    where would you get the wire (green wire that connects switch and the main board)

    0
    ben pruitt
    ben pruitt

    7 years ago

    Where can you get wire like that? The short piece you used?

    0
    ingeneer
    ingeneer

    7 years ago on Introduction

    you can try to use 4x li-ion batteryes all of them are strong and reliable, I'm doing a sim
    illar project and getting great resutls with liion. :) took my old laptop battery, disasembled it and took the batteries out...

    0
    alex888
    alex888

    7 years ago

    can this burn out the battery of any phone?

    0
    floppydiskman322
    floppydiskman322

    7 years ago

    I tried this it turns on my USB powered light but it won't register on my IPod


    Do you know why

    0
    9mag9
    9mag9

    Reply 7 years ago on Introduction

    Did you connect the data pins.These are the two middle pins. Apple is really evil and makes it hard for everybody to do anything involving their projects.

    0
    tektal
    tektal

    7 years ago on Introduction

    Can you share the charging times please? Thank you.

    Max

    0
    KemikalzAreFun
    KemikalzAreFun

    7 years ago

    I could also instead of 8 AAs use a 1or2 9v's that way it would be more compact, yes?

    0
    tealk
    tealk

    Reply 7 years ago on Introduction

    yes, but 9v doesnt have enough mah, it think.they can charge only 30-40 % i think

    0
    OrlandoSailor
    OrlandoSailor

    7 years ago

    Nice simple design. I am working on a similar charger that incorporates a solar panel as well to charge NiMH batteries while camping. I am a novice, but understand that the 12 volt car charger converts 12 V to 5 V. As long as you have an input of around 5V, I would think it should also work and 4 AA batteries should suffice. There are similar chargers described that run on 4 NiMH batteries (4.8 V). Has anyone tried this?

    0
    tealk
    tealk

    Reply 7 years ago on Introduction

    i did, you can also make charger like mine(find it on my profile) but use only rechargeable 9v battery with solar panel. or you can use 4x1.2 v battery and solar panel,on battery of my phone(zte skate) there says that min. voltage for charging phone is 4.2 v, so almost dead batterys can charge my phone (4.2/4 = 1.05 )
    also you can use 3x1.2 v battery and charge only battery directly (but i dont prefer that way),....there is 1000 ways to make portable phone charger, for camping maybe best is to use thermoelectric generator like kipkay.......uhhhh 1000 ways, 1000choice , and 0 hours to spend on each of them

    0
    redbadger95
    redbadger95

    7 years ago

    Will it charge an iPhone from being flat to 100%? How long do the batteries last?