Tuesday, December 15, 2015

[HELP] DIY battery

Let me preface this by saying this is my fist time posting here so if I screw something up, tell me and I'll fix it but I've gotten a lot of good information here about coding and other things so I'm going see if someone could help me over a little road block I've met in my current project. I am not a great electrician.

I'm trying to build a portable battery that will charge all my devices. I want it to have a common port to charge from, be lightweight, and relatively cheap (under $100). The two main devices I want to charge are my phone and my chromebook (power specs to follow).

Phone: Nexus 6p
usb type C
charger in box does wall (US) to 5 volt, 3.1 amp
3.1 Ah battery

Chromebook: acer c710
proprietary connector
power adapter does wall to 19 volt, 2.15 amp
2.2 Ah battery

Here's what I have so far. I was thinking of a usb type c input jack. The three power lines on it would be converted to 19.2 volt then stored in a drill battery. The drill battery could then be brought down to the 19 volt for a direct connection to the chromebook on one port and brought down to the different voltages for a type c port.

Here's why I cose these parts:
The types c input jack would be about to charge from a standard usb a wall plug with a cheap adapter and charge the battery, just slowly. If I get a charger for home that has a faster charge rate I could get really, really fast rates because of the type c 20 volt line when chargers for 100 watt type c come out.

the drill battery seems like a cheaper option than anything else plus the 19.2 volt storage would mean much less converting. I don't need a huge battery as you can see by the sizes of the devices' batteries I intend to charge. I can see there being a much better option here that I missed.

I chose the direct 19 volt out because it seemed easier that going to a 120 volt ac wall plug then back down (again I could see myself being wrong here).

lastly I chose a type c out basically for the same reason I chose it as the input jack. I can be made to charge and usb device with a cheap adapter. I'm not against a type c port and a type a port if that is easier or so easy that I just should.

anywhere you see something in this plan that could be done cheaper/better point it out. If nothing is wrong with this then all I need to ask is how do I wire a type c port with the different voltages?


from xda-developers http://ift.tt/1P6S8aH
via IFTTT

No comments:

Post a Comment