Universal battery charger with 12V source voltage

phone battery charger with 12V source  voltage
In this post I will share about using Accu source to charge batteries that can be used on any mobile brand, or can be called universal phone battery charger. Because the battery charger using a source of 12V, the charge accumulator can also be used in cars and others.

This will out charger circuit voltage of 5 volts DC, with input from at least 6 volt battery, and voltage inputs that have been tried till with 15 volts (more than it has not been tried, because the battery that tie the maximum output voltage is only 13.8 volts).

circuit universal phone battery charger

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March 6, 2013 at 10:39:00 PM GMT+7 delete This comment has been removed by the author.
March 6, 2013 at 10:40:00 PM GMT+7 delete

Does this circuit charge any phone battery? what are its specifications??

and what is the min. value of the input voltage that would still charge the battery??

is this circuit safe??
thank you