DroidForums.net is the original Verizon Android Forum! Registered Users do not see these ads. Please Register - It's Free!
Results 1 to 2 of 2

Thread: Droid X Battery Hard wire to car.

  1. Droid
    xpbr2000's Avatar
    Member #
    205218
    Join Date
    Jun 2011
    Posts
    54
    Phone
    Droid X
    #1

    Droid X Battery Hard wire to car.

    Hello,

    this is a bit of a custom job. I want to take my Droidx and make it a dedicated display in my car. My issues are the battery is shot and buying another is more investment than I prefer. also the battery is not going to work for what i'm doing because it will not be on charge as frequently as it need to get a full charge.
    so here is what i want to do. I want to hard wire the battery terminals to a 3.7 vdc source and use that as the primary power to the phone. and use the usb power to wake it on entry and while the ignition is on. right now i've got the usb cord without the battery and it works fine. but I wanted to maybe use the battery/usb to wake it. Anyone able to power the phone on the terminals for the battery?

    Thanks
    -xpbr2000
    Droid X
    Liberated L3 V1.0
  2.  
     
     
     
  3. Master Droid
    AECRADIO's Avatar
    Member #
    354311
    Join Date
    Sep 2013
    Location
    Payson, AZ.
    Posts
    338
    Liked
    39 times
    Twitter
    @AECRADIO
    Phone
    Droid 2, Droid X, Moto-G
    #2
    The phone's power control circuits will not allow this, as they have a soft power feature, meaning the on/off cycle is handled by ASICs, and not simply via battery voltage or current.
    You can use a toggle switch in place of the top mounted lock/power button, but that would defeat the screen lock, and may cause the phone other issues as you are causing a constant 'on' command that was designed to be momentary.
    Powering the phone via the battery contacts should be fine, as long as you are using well filtered D.C, with almost no ripple. The supply should be robust enough to provide at least 4 Amps of current continuously, as you need to remember that the supply to the phone also uses current to power the phone.
    There is no free lunch in power supplies!
    Filtered D.C, with almost no ripple from switching supplies, input D.C also filtered from the effects of the vehicle's charging system, instantaneous spikes in current draw from fans, stereos, amps and A/C compressor clutches. Anything that uses D.C, and draws current can become a potential spike that can damage a phone's regulation/charging supply.

    You do not need to get elaborate, but if designed well, you should not incur any troubles if you decide to make this a permanent mount.

    Always follow the K.I.S.S methodology: Keep It Simple, Stupid!

    Inductive kickback from coil fields collapsing has ruined many a phone, as well as other equipment running of a vehicle's power system.
    Ernest A. Erickson
    Payson, AZ.
    NCC-1701E

Links

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Similar Threads

  1. Hard Wire Droid Device so it an use PC's Internet Connection
    By Lobonca in forum Android Applications
    Replies: 3
    Last Post: 06-06-2012, 01:44 PM
  2. Hard Cover/Case for DROID PRO with Extended Battery
    By JessiJayy99 in forum Android Accessories
    Replies: 0
    Last Post: 01-27-2012, 12:21 AM
  3. Hard wire...
    By Nyteravyn in forum Motorola Droid Bionic
    Replies: 0
    Last Post: 09-21-2011, 05:06 PM
  4. Droid 1 stuck asleep? Battery Pull & Hard reset won't help....
    By gg7aph in forum Android Tech Support
    Replies: 0
    Last Post: 06-22-2011, 02:15 PM
  5. Great Wire FM antenna for Droid X
    By xmguy in forum Droid X General Discussions
    Replies: 0
    Last Post: 12-14-2010, 10:54 PM

Search tags for this page

car direct wire android

,

direct wire motorola droid 2

,

direct wiring android without battery

,

hard wiring android to vehicle

,

hardwire droid x2

,

hardwire droid x2 to battery

,

power droid x without battery

,

wiring droid x to run without battery

,

xbattery theme v1.2

Click on a term to search our site for related topics.
Find us on Google+