How To Make Portable USB Charger

The easiest portable battery charger is made!

1) Will it burn your phone? NO!
2) Is it safe? YES!
3) Can You order any KITs from us to do this item by Your own? YES!
4) Should You be proud of it? Definitelly YES!

Technical Note:
1. While summary voltage of appiled AA-cells is higher than 4.2 V (max voltage of your cell phone battery) it will charge your phone
2. It is better to use the same four AA-cells
3. Accumulators or old-school acid cells no metter but it is better to use accus while You can recharge them
4. diode and resistor ARE important
5. Diode may be any Schottky diode with a forward current greater than 1 Amper
6. Resistor limits current and accepts the voltage difference between Charger and phone. You may use resistor of the SAME value but with a bigger power dissipation
7. Until Your battery inside Your phone -- no overvoltage for phone happens. Battery keeps voltage in the phone's schematic on it's own level, untill it is charged full
8. after fullcharge no overvoltage happens cause Your phone automaticly switches off charging when battery is full

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Views: 34776
Favorited: 158
Submitted: 07/19/2013
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#7 - dubii (07/19/2013) [-]
I'll try it later.
I'll try it later.

User avatar #26 - trollzoll (07/19/2013) [-]
Favorited this gonna try it when half life 3 comes out
User avatar #11 - biomedic (07/19/2013) [-]
This guy makes soldering look easy. I will make a mess of molten metal that short circuits everything.
User avatar #18 - sebgun ONLINE (07/19/2013) [-]
For those who suck at soldering and **** :
#21 - rmoran has deleted their comment [+] (6 replies)
#13 - nigalthornberry has deleted their comment [+] (2 replies)
User avatar #9 - kakariko (07/19/2013) [-]
Might try later.
#37 - anonymous (07/19/2013) [-]
So uh i tried this and... I electricuted myself while putting the batteries in... Yes i am moron
#35 - SunilCCXXXVII **User deleted account** (07/19/2013) [-]
Umm ye..

spend 4 hours looking up this stuff, buying the components and putting it together..
costing you probably the same as it would to buy a working, far better build version.

Or spending 4 minutes buying it from Amazon.

I'd rather just buy it.
User avatar #30 - mrnotsosafeforwork (07/19/2013) [+] (1 reply)
what if THOSE batteries run out?
#29 - Zaebos ONLINE (07/19/2013) [-]
well i need to make this.
well i need to make this.
User avatar #28 - Fwimble (07/19/2013) [-]
if you put NiCd rechargeables in, you can use a solar cell to charge the batteries which then charge your phone
#25 - anonymous (07/19/2013) [-]
[url deleted] or this
User avatar #17 - arwendar (07/19/2013) [-]
That is some very clean and neat soldering.
User avatar #16 - foelkera (07/19/2013) [-]
I want to try it but soldering is like rocket science to me

I'm not very good at rocket science, either
User avatar #12 - blasthardcheese (07/19/2013) [-]
What is the rating of the resistor? I cant tell if its1, 1.2, or 2.
#10 - drakonfrostbreath has deleted their comment [+] (1 reply)
#8 - anonymous (07/19/2013) [-]
User avatar #6 - theguyyoualllove (07/19/2013) [+] (1 reply)
Could you make TurtleBeaches portable with this?
User avatar #31 to #6 - biporch (07/19/2013) [-]
Why'd you do that?
#1 - anonymous (07/19/2013) [-]
8/10 post as the "funny" channel wasn't really the ideal place to put this
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