DIY - Charging a mobile phone with a modded car charger (trying to make portable

[Nicholas]

charger)? I found an old 12-24v Car Charger for a Panasonic G500. I hooked up a 9v battery to it and the indicator came on, suggesting that it works. Ive stripped it out of its car plug and fitted it inside a cheap battery casing, with a USB Female hub on the outside.

How much batteries and what type of batteries will i need to make it work properly?
I think the output voltage is 5v 2A, the packaging and charger itself didnt have much details.
The maximum input voltage range is 12v-24v.
Tested it with:
> 3v casio scientific calculator

> 9v motor out of an old R/C car
> Bluetooth headset
It doesnt seem to charge my Blackberry unless another device is connected then disconnected(probably to put the charger onto full-amps out or something)

[TimothyL]

To be honest you can buy an in-car charger for most mobile phones for low cost on EBay. I just would not risk it - how much are you going to have to pay for a new phone ? Bear in mind that you are not just risking the phone battery but the phone battery charging circuits. Blow those and the phone is an ornament.

[wildwoodpecker]

Unless you willing to take the risk of blowing up whatever you try to charge ... Don't even think about charging a mobile with a diy charger unless you really know what your doing

[ComplElect]

What you can charge with this depends upon the electrical rated output and the charging circuit design.

Not ehough information.

[xtx]

=== use your new modded or modified plug charger system and you will BLOW-UP your cellular phone ---- do not use that thing == you found that in the trash and put it back in the trash and get a proper wall charger from amazon or e-bay or get a new car charger made for your phone == the makers of phone chargers are manufacturing chargers that solely indigenous to their own phones .. If you value your phone do the right thing and get the correct P-G500 equipment ... plz