DIY iphone ipod touch external battery charger

NOTE: ONLY USE RECHARGABLE BATTERIES DO NOT USE REGULAR ALKALINE IT MAY KILL YOUR IPHONE!

This is an external battery charger I made. The ipod touch battery just doesn't cut it for extended browsing and video steaming. This gives you 1000mah x 4 vs. the lone internal battery of the ipod touch of less than 1000mah.

If anyone has any suggestions/question please post them.

Also, an important note, this will only work with a battery pack that takes 4 batteries. A pack that takes 2 or 3 won't work. Another VERY IMPORTANT NOTE, ONLY USE RECHARGEABLE BATTERIES! DO NOT USE REGULAR ALKALINE BATTERIES!

I have a little gadget blog with a PARTS LIST, and more info:
http://awe215.blogspot.com/

Category:

Education

Tags:

• DIY iphone charger
• DIY ipod touch charger
• iphone
• ipod touch

[cworkman29729]

Do I need To Use AA Batteries or AAA Batteries?

[awe215]

Both will work. Just make sure they are rechargeable AAA batteries.

[at0m87]

is the number of batteries to hook up flexible meaning i can use 2 or say maybe 8 instead?

[awe215]

I don't think you can use more than 4. 8 batteries will give you twice the amount of voltage and that would be bad. I think you could add a voltage regulator which would keep it at 5 volts but I am not sure. So....stick with 4!

[awe215]

I am glad I could help. It would be nice if we could just get that tip and resistor on it's own!

[Nrgzrbunny777]

@awe215 Put the batteries in parallel.

[Nrgzrbunny777]

why?



[Samstorm139]

To do this correctly you should use a regulator. Google 7805. The correct charge rate is from 5volts.

[ipwnr]

you didn't need to buy that just for the wire you could of just used a regular iPod/iPhone wire and cut the wine at the usb and just strip all the wires and connect the green and white wire together then you can run power through the red and black and it will charge

[MrVegaman13]

Ok so you say 4 rechargeable batteries = 4.8V. 4 alkaline batteries = 6V. Ok, so how about if i want to use alkaline batteries, instead of 4, i can use 2 right?

[TheRealBoof]

@Dali100789 Oh, and I made a MintyBoost out of an altoid can, it was awesome!

[TheRealBoof]

@Dali100789 lol, sorry, that comment came out more malicious than i intended. I thought u were arguing for something different, not explaining things. I passed my physics class last year and learned all about Amperages, Volts, and the like! Thank you very much for your comment ^-^

[TheRealBoof]

@Dali100789 This may be true, but it has nothing to do with how the iPhone receives charge. The iPhone is constructed to recognize reistors on the circuit board of the charging device. When it does not recognize what it wants, it blocks the charger out and says "This charger is not supported for this iPhone."

[Dali100789]

@TheRealBoof

Bottom line, a device only draws what it wants to, provided the voltage is what it wants to see. Think of a battery in terms of regular power out of your outlet, but it is only plugged in as long as the battery is rated for. You can plug a microwave, or a tiny light into the same source, A 12W light bulb doesn't explode because it has 15Amps available, cause it only draws .1 Amps (100mA) Hope that helps.,im kinda drunk and kinda bored so pardon the ramble. Word...

[Dali100789]

@TheRealBoof

Power supplies don't put out a certain current, though they are limited to an output. It is the resistance of the device that uses whatever current is deemed by Volts/Ohms. Therefore depending on the internal resistance of a device being powered, for arguments sake it might use all 2.4A for an hour, or maybe 240mA for 10 hours. ( The forrmer is not actually possible because the internal resistance of the AA battery limits the current flow to below an Ampere.)