Usual Batteries Charges CellPhone

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Usual batteries can charge cell phone? How to make Cellphone charger for anyone 'on-the-go'! You will need only charger plug, resistor 2 Om, and four batteries AA size. Simple , easy to make and very useful!

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    25 Discussions

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    jeasterl

    6 years ago on Introduction

    would be better to use a forward biased silicon diode (voltage drop =~.7 volts) leaving 5,3 volts nominally in the usb specs for any battery of a higher voltage i.e. nine volt a regulator is needed
    careful some regulators drop excess voltage as heat wasting valuable watts

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    tfrost1980

    6 years ago on Introduction

    NO, not only in America both companies are American therefore would not break copyright laws, the energizer bunny is a trademark, the problem lies with lowlife foreign companies who steal american intellectual properties. counterfeit batteries are a well known problem in lesser countries.

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    anallie0

    7 years ago on Introduction

    I made ​​a guide inspired by the circuitry found on the web and I optimized.
    http://thepowerofwindroid.forumcommunity.net/?t=46577269

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    fgrahamfwjs28

    Reply 7 years ago on Introduction

    Only in America does Energizer have the bunny as a trademark. Elsewhere, duracell also has bunnies.

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    Hammerhead46

    8 years ago on Introduction

    What is the polarity on phones using a Micro mini USB connection like the Motorola phones and the LG phones?

    bit of a noob question: do i need a regulator/resistor at all?
    can't i just use a 6v battery combo to charge a 5.2v device?
    or will that be a very bad idea?
    suggestiond please.

    I would just do the same, except with a 6-volt spring-terminal lantern battery

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    Ockin

    9 years ago on Introduction

    I have to say that it is clever but not very useful. If in order to create this charger you require a cable that plugs into the phone it is most likely that that original cable could be used to charge it either through a computers usb or the mains anyway. I guess it is useful to take with you on a trip.

    If there was a way to charge a phone BATTERY so you don't need a cable to plug into it then it would be more useful.

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    Thats much better than putting a 2 ohm resistor, specially because if the cellphone does not use much current.

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    555mst555omkar_hummer

    Reply 9 years ago on Introduction

    this one is not very good....coz once ur batteries go to below 5v u cant charge anymore....u should use a 9V and hook it up to a 5V regulator...i made one...it worked well on my psp