Your DIY 12V power source is shorting out. Something wasn't assembled correctly. Take it apart and do it over. Defective phone charger?
If you are talking about a car's cigarette lighter then yes if you have the proper phone adapter/charger.
Check the outlet by plugging in a 12v accessory (radar, gps, phone charger). If it has power, then the problem is the lighter itself. The are only a few dollars.
Doesn't have a cig. lighter--that is a port for phone charger--not a lighter!
Check the fuse. If you use a phone charger or any other aux device in the cigarette lighter most likely blew it.
Either there is a fault in the cell phone charger (try it in something else) or the wires on the cigarette lighter socket are reverse polarity. Check centre of socket is positive.
Change the fuse in the box next to the glove compartment.
No, portable cell phone chargers will not harm your phone. I've used wall chargers and cigarette lighter chargers with phones and never had any problems related to them.
By plugging the charger into an electric socket.
The cigarette lighter / pwer socket is a constant hot socket. In most cars you can use this power socket at all times. It is best to remove anything(except the cigarette lighter) from this socket when the car is off.
If you're referring to AC power plugins, there's a single 12-volt charging port located directly underneath the cigarette lighter under the radio console.
To charge a cell phone you will need either an outlet plug-in or car charger compatible with your particular model. The best way to fully charge a cell phone is to turn it off completely while charging. At the butt of the cell phone there should be a thin slot to plug your cell phone charger into. Plug the other end of the charger into your wall or car's cigarette lighter.
Check your fuses in your fuse panel usually that is what is wrong when cigarette lighters and radios quit working.