Comments on: Can we transfer power of electricity on to the laptop, through USB port? http://www.batterybackupguide.com/blog/can-we-transfer-power-of-electricity-on-to-the-laptop-through-usb-port/ Thu, 17 May 2012 21:24:49 +0000 http://wordpress.org/?v=2.7 hourly 1 By: Aeristes http://www.batterybackupguide.com/blog/can-we-transfer-power-of-electricity-on-to-the-laptop-through-usb-port/comment-page-1/#comment-2157 Aeristes Sat, 15 Aug 2009 06:25:11 +0000 http://www.batterybackupguide.com/blog/can-we-transfer-power-of-electricity-on-to-the-laptop-through-usb-port/#comment-2157 USB is split into 4 internal cables, two that transfer data , and 2 for power. If you use only the power cables then you can send electricity to something such as a battery. The cables are usually colored Red, White, Green, Black Red (+) is for sending power (5V) Black (-) is the grounding current Green and white are for sending and receiving data It get complicated beyond that though, as typically a USB port will transmit at most 5V, If you would like this to charge a battery or such, you may need to attach some transistors or resistors to tweak the ampage and wattage so you don't blow the battery. And you also have to take into account the resistance of the wires. So if you do your research correctly, a soldering gun and a trip to radio shack is all you'll need. If you want to charge a battery for a laptop like this, it will work, but it will charge very slow. USB is split into 4 internal cables, two that transfer data , and 2 for power. If you use only the power cables then you can send electricity to something such as a battery.

The cables are usually colored Red, White, Green, Black
Red (+) is for sending power (5V)
Black (-) is the grounding current
Green and white are for sending and receiving data

It get complicated beyond that though, as typically a USB port will transmit at most 5V, If you would like this to charge a battery or such, you may need to attach some transistors or resistors to tweak the ampage and wattage so you don’t blow the battery. And you also have to take into account the resistance of the wires.

So if you do your research correctly, a soldering gun and a trip to radio shack is all you’ll need.

If you want to charge a battery for a laptop like this, it will work, but it will charge very slow.

]]> By: jp_dfw http://www.batterybackupguide.com/blog/can-we-transfer-power-of-electricity-on-to-the-laptop-through-usb-port/comment-page-1/#comment-2156 jp_dfw Fri, 14 Aug 2009 21:12:59 +0000 http://www.batterybackupguide.com/blog/can-we-transfer-power-of-electricity-on-to-the-laptop-through-usb-port/#comment-2156 In short, no. The USB port has a 5VDC and Ground connection but you're not going to charge the battery by adding an external power source to those pins - more likely you'll blow the USB hardware. If you want to charge a laptop you'll need to do it through the DC connection that the power brick normally connects to. Sorry, there's no shortcut to a universal charging connection - your product will need to deal with the myriad of different connections that laptops have. Of course you can expand your product line (and create an additional revenue stream) by providing separate adapters for the different connections you'd expect to have to support. In short, no. The USB port has a 5VDC and Ground connection but you’re not going to charge the battery by adding an external power source to those pins - more likely you’ll blow the USB hardware. If you want to charge a laptop you’ll need to do it through the DC connection that the power brick normally connects to.

Sorry, there’s no shortcut to a universal charging connection - your product will need to deal with the myriad of different connections that laptops have. Of course you can expand your product line (and create an additional revenue stream) by providing separate adapters for the different connections you’d expect to have to support.

]]> By: ICreatesStuff http://www.batterybackupguide.com/blog/can-we-transfer-power-of-electricity-on-to-the-laptop-through-usb-port/comment-page-1/#comment-2155 ICreatesStuff Wed, 12 Aug 2009 14:13:09 +0000 http://www.batterybackupguide.com/blog/can-we-transfer-power-of-electricity-on-to-the-laptop-through-usb-port/#comment-2155 yes you can. USB sockets have an output of +5V DC (5 volts direct current) yes you can.
USB sockets have an output of +5V DC (5 volts direct current)

]]> By: John S http://www.batterybackupguide.com/blog/can-we-transfer-power-of-electricity-on-to-the-laptop-through-usb-port/comment-page-1/#comment-2154 John S Tue, 11 Aug 2009 08:55:17 +0000 http://www.batterybackupguide.com/blog/can-we-transfer-power-of-electricity-on-to-the-laptop-through-usb-port/#comment-2154 Yes, you can, thats how things like iPhones and iPods charge. Yes, you can, thats how things like iPhones and iPods charge.

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