1. joaoareias's Avatar
    Hey guys, I want to make an mobile battery charger to my phone and what I want to do is basically hook up some regular batteries on a usb cable so I can just use as a emergency battery to my phone. The problem is I don't know how much volts should I use, I can do a 3.0v or a 4.5v with those regular batteries but I heard that 4.5v is too high and I don't know if 3.0v is too low can u guys help me
    10-18-2013 07:50 PM
  2. wizzrah's Avatar
    Hey guys, I want to make an mobile battery charger to my phone and what I want to do is basically hook up some regular batteries on a usb cable so I can just use as a emergency battery to my phone. The problem is I don't know how much volts should I use, I can do a 3.0v or a 4.5v with those regular batteries but I heard that 4.5v is too high and I don't know if 3.0v is too low can u guys help me
    Just buy an external battery. But if you must know, a typical wall charger I think charges at 4.5 volts.

    Sent from my One X using Tapatalk 2
    10-19-2013 07:29 PM
  3. joaoareias's Avatar
    Thanks man, I just can't find a store that sells it here and I don't want pay for shipping so this way will be cheaper.
    10-20-2013 11:42 PM
  4. wizzrah's Avatar
    Thanks man, I just can't find a store that sells it here and I don't want pay for shipping so this way will be cheaper.
    Amazon? Free shipping? Like this one

    http://www.amazon.com/10000mAh-Portable-Dual-Port-Thunderbolt-Incredible/dp/B009USAJCC/ref=sr_1_1?ie=UTF8&qid=1382409213&sr=8-1&keywords=external+battery
    russellvone likes this.
    10-21-2013 10:30 PM

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