IPad Dual-USB Charging Cable

By in CircuitsApple

9,022

13

4

Introduction: IPad Dual-USB Charging Cable

By The Danger Bears

Charge your iPad using 2 USB ports, twice as fast as on a single USB port.

1. Cut 2 iPod|iPhone|iPad Cables
2. Identify and verify the cables that carry power (in case you are not using the apple supplied cables) - usually they are red (+5V) and black (G)
3. On one of the USB cables, cut and isolate the data cables (the two cables NOT power related as in item 2 above)
4. Reconnect everything (I used a small veroboard, but just simple splicing/soldering should be okay) - Just make sure you connect the power cables IN PARALLEL.
5. Insulate and test (I used Sugru to create a more hardy enclosure)

This has been tested to bring up a 7% battery charge iPad to full in  about 5 hours - more testing is underway for validation)

Be the First to Share

    Recommendations

    Rubik's Cube Solver
    Rubik's Cube Solver by aaedmusa in Gadgets
    24 3.2K
    Laser-Cut Infinity Dodecahedron (Fusion 360)
    Laser-Cut Infinity Dodecahedron (Fusion 360) by thomasj152 in LEDs
    155 13K
    Pingo, the Secret Color Clock by Illusionmanager
    Pingo, the Secret Color Clock by Illusionmanager by illusionmanager in Clocks
    1 32 3.0K
    A Pocket Sundial From a Broken Pocket Watch!
    A Pocket Sundial From a Broken Pocket Watch! by JGJMatt in Metalworking
    78 7.7K

    • Make It Bridge

      Make It Bridge

    • Big and Small Contest

      Big and Small Contest

    • Game Design: Student Design Challenge

      Game Design: Student Design Challenge

    4 Comments

    0
    Jobo17
    Jobo17

    9 years ago

    This wouldn't work, iDevices only accept 5v and a resistor on one of the 4 wires inside USB (I forgot which one) which acts as a key, without it, it wouldn't charge, it would ignore it. Same with this, too much voltage will make the iDevice ignore it

    0
    grundisimo
    grundisimo

    11 years ago on Introduction

    One USB cable could bring the charge up faster. And, if you aren't careful, using this could ruin the iPad you just spent 500 plus dollars on.

    0
    jgosselin
    jgosselin

    Reply 11 years ago on Introduction

    if you are unfamiliar with series and parallel wiring you should look it up, it is very helpful when dealing with electrical instructables. because the iPad is rated for 5v/10watts by apple. that's 2 amps if this is connected to a PC it would never ever be in danger besides faulty wiring as a pc only outputs max 5.25volts/900 mA's over a standard USB port. not to mention if u supply access amperage it just won't use it. so to readdress the point.. as long as you clearly can ID the 5+volt and gnd and connect them correctly in PARALLEL this charger is just about equal to the wall wart they ship it with.

    NOTICE: some PC's have dedicated charging ports they can output around 1.5-1.8amps so you technically wouldn't even need this cable if your PC had such ports, but they only come on high end motherboards.