[Q] how to run a phone without battery only by connecting charger

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Shrihari007

Shrihari007

Senior Member
Apr 17, 2012
574
263
I think the question may be silly but I want to know the procedure for this. can I run the phone directly by connecting only charger and removing the battery...as I keep for downloads of movie over 3g it drains battery damn fast and if its kept charged the battery looses its power. so plz help me out.
 
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rexzooly

rexzooly

Senior Member
Jan 17, 2008
211
4
Dewsbury
I have been looking for this also, what I feel we have to do is like power the device from the battery port, I not sure how we would do this but a multi charger with the right voltage and amps might do it, I am sure there are repair centres that do this as they would not keep using battery's no scrap that I been to a few and they don't and when you send them your phone they ask your NOT to send the battery with the device, so there really must be away to power the device without the main battery but the phone would think the power source is from a battery.

If anyone as a idea how please drop a post.
 
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ruscan.calin

ruscan.calin

Senior Member
Nov 29, 2010
622
289
Shrihari007 said:
I think the question may be silly but I want to know the procedure for this. can I run the phone directly by connecting only charger and removing the battery...as I keep for downloads of movie over 3g it drains battery damn fast and if its kept charged the battery looses its power. so plz help me out.
Click to expand...
Click to collapse

besides physical limits power output from transformer/ "charger" is too high and will destroy the phone
"charger" because battery is really charged by the charging-circuits placed on phone mobo
 
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D

danzobiggins

Member
Mar 18, 2013
12
2
Stoke
Yes

You should be able to remove your battery if you are plugfged into the mains charger and it shouldnt affect you phone peformance i dd this with my phone and i checked the performance with the SETCPU app and it was running brillantly i just set the app to run on full peformance when plugged into the mains and it was brillant.
 
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I

inherit

Member
Mar 8, 2012
16
1
Targoviste
Shrihari007 said:
I think the question may be silly but I want to know the procedure for this. can I run the phone directly by connecting only charger and removing the battery...as I keep for downloads of movie over 3g it drains battery damn fast and if its kept charged the battery looses its power. so plz help me out.
Click to expand...
Click to collapse

Well, it's all about how the phone was build... My HTC Touch Cruise 09 are not working without the battery. I try to start the phone with battery, connect the charger and than remove it. The phone goes off. By mistake, I powered on an LG T300 without the battery, while the phone was connected with an USB cable to my computer. The phone started and worked fine.
So, take your own conclusion...
 
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C

chihwahli

Senior Member
Sep 20, 2014
95
15
Any electronics guy/girl here?

Bump... thread into acitivity again... no answer yet. Like to know it as well.

Developers we have enough. But is there a person who has knowledge about electronics, and have an idea how to use , for example,
use a USB 5V without the battery. How to connect wires, what electronics components are needed?

The following website has a way to do it, but it's 12V and one of the components becomes very hot. I don't like that.
http://www.instructables.com/id/How-to-use-phone-without-battery/

Help? Running a smartphone on USB power only would be awesome as a bettery is drained fast if you game, surf on the internet, etc.

My S6312 cannot operate without the battery, somehow the 3 connections have to be connected. But how?
Are the connections the same for example the S7275R?
 
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T

trivalent

Senior Member
Aug 27, 2012
69
36
Noida
chihwahli said:
Bump... thread into acitivity again... no answer yet. Like to know it as well.

Developers we have enough. But is there a person who has knowledge about electronics, and have an idea how to use , for example,
use a USB 5V without the battery. How to connect wires, what electronics components are needed?

The following website has a way to do it, but it's 12V and one of the components becomes very hot. I don't like that.
http://www.instructables.com/id/How-to-use-phone-without-battery/

Help? Running a smartphone on USB power only would be awesome as a bettery is drained fast if you game, surf on the internet, etc.

My S6312 cannot operate without the battery, somehow the 3 connections have to be connected. But how?
Are the connections the same for example the S7275R?
Click to expand...
Click to collapse

I am also looking for similar stuff to power my Sony Ericsson W8 Phone without batteries. Kindly let me know know if you have found something.
 
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F

factoreal

Member
Apr 8, 2013
20
3
Shenzhen
Huawei U8825D Could Be Run without battery by Connecting with a Charger

To my astonishment, with battery removed, Huawei U8825D could be turned on and operated normally with the charger plugged in. I came across this thread as I was wondering if there are tweaks that could be applied to other phone models to enable this function.
 
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B

black.sr27

New member
Sep 21, 2015
2
0
mahdia
I' not sure if this will help but no harm in posting it so may some one can find the best mod I used a similar trick my symbain and gess it will work fine with any other phone but am not responsible for any side effects or any thing like that...
Recwirment are a battery with the same voltage of your phone ana two wires. Attach the (+) born of battery with (+) born phone same thing for (-) and put the charger and play with your phone as much as possible tested on n8 symbain but not android so be careful about it

Sent from my MT27i using XDA Premium 4 mobile app
 
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L

lamelaa

New member
Oct 9, 2015
1
0
I wonder if phones can not work with no battery, how it can be called an accesory. Because accesory is "1. clothing that is worn or carried, but not part of your main clothing, 2. a supplementary component that improves capability". Samsung says battery is accesory therefore changing battery four times can not provide repayment or changing phone procedure. Have they a right like this
 
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Michael_P

Michael_P

Senior Member
Jun 3, 2012
696
113
It should work by taking the protection circuitry from an old battery and take a power bank that uses a lithium cell and connect the + & - of the power bank to the + & - of the battery circuitry.
This way it should trick the phone into thinking it has a fully charged battery installed, plus giving the extra overcurrent protection from both boards.
 
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J

jaedenhudson14

Senior Member
Nov 7, 2014
123
23
I know its kinda late, but I am searching for a topic and this is as close as I am getting to it. So here is my question. I have an LGV10 from Verizon. I am rooted but have no custom recovery. (you can look up those threads about all of that) I was curious about seeing if I could sort of hot swap the batteries by plugging it in and changing them. The phone appears to run fine off the charger alone, but a message comes up on the screen saying battery removed. Shutting down. Is there a way to get around that?
 
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G

greypanda

New member
May 28, 2016
1
0
need powersupply with right voltage and ampere

afaik you need a powersupply to do that.

check the battery voltage and ampere.

adjust the power supply to the same volt and ampere.

connect + and - pin, power up the power supply and turn on your phones.
power supply tools for mobilephones arent cheap.
alernatively,
if you have a technician friend, perhaps you can ask him to make a non dynamic power supply nor electric adapter with certain voltage and ampere
 
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Z

Zansa777

New member
Oct 25, 2012
2
1
For all those still curious on how to run a phone with no battery

Add watch?v=f0IuBld2lzA[/url] at the end of youtube. I can't post links yet. Basically you cut off the end of your USB cable and connect it directly to the leads on the phone that battery normally connects to. Kind of like a universal charger being used direclty on the phone.
 
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S

Santosh Kale

New member
Sep 20, 2014
2
0
I got an idea

Shrihari007 said:
I think the question may be silly but I want to know the procedure for this. can I run the phone directly by connecting only charger and removing the battery...as I keep for downloads of movie over 3g it drains battery damn fast and if its kept charged the battery looses its power. so plz help me out.
Click to expand...
Click to collapse

Well battery have some internal registance .
Maybe if you connect a small register between tow nodes of power output of phone, you can possibly emulate presence of battery.
But if it doesn't work then you will facing some circuit failure. All the best . Let us know your result :confused:
 
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    supermaxkato
    @zeroFILL Here's how to fix the battery percentage going down:
    -You have to be rooted
    -Use the terminal emulator app
    -Type SU (switches from $ to #)
    -Type this command to keep the phone at 100%
    dumpsys battery set level 100
    -Type this command to tell the phone that the charger is plugged in
    dumpsys battery set usb 1

    Everytime you reboot it reverts to stock settings. So I use a tasker script that runs the above commands on every boot.
    I've only tested all of this on an htc desire 510 running 4.4 so these may or may not work on your device.

    ---------- Post added at 12:41 AM ---------- Previous post was at 12:37 AM ----------

    What I'd really like to know is if anyone knows how to still use the USB port to power the phone (instead of hard-wiring to the battery terminals)? There has to be a combination of jumpers, or a resistor to mimic a fake battery, so that we can still use a standard cable and the normal phone connector. Anyone have any ideas?
    (Right now I have it working but I had to drill a hole through my back cover and splice a micro usb cable, so I'm hoping for a cleaner method).
    View
    2
    V
    Vipindasu
    Samsung phone switch on only while external power is given

    For accomplishing this task,
    1) Download the "Auto Boot On Power" app from packagedisabler.com website to your phone.
    2) Install the app.
    This is a great service from packagedisabler team which allows android users to enjoy this amazing feature which was earlier
    available only to the iphone users.

    Use case: In showrooms and exhibitions, all the devices can be switched on and shut down easily.
    output_wbSCk7_1000x1500.gif
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    2
    R
    rosemonkey88
    For Sony Xperia Series Hardware

    Try this, i would say it works for most of the Sony Xperia series. only a guess, i have tested only Sony X10, Xperia E, Xperia Z1, Z2. for other models or even poket wifi etc, i would say they are working in the similar way, worth trying. again at your own risk.

    do in this way, 3pins on the battery power connector inside the phone, connect the plus to the USB charging port plus(that 5v) - this is because i dont want extra cabling inside the phone, reuse the charging connector on the phone as power supply instead of charging. between the middle pin and the minus , connect a 20-30k resistor, connect the usb charging cable, connect the cable to a 5V power source. the phone will boot without a battery. monitor the fake temperature of the battery shown by a battery monitor app, need to be between a normal working temperature), try and adjust the value of the resistor if necessary.

    Pay attention to these :

    1. if you think apply 5v power source to a 3.7v battery plus pin, it will damage your phone and make you feel uncomfortable, dont try this at home. you can try 3.7v-4.0 with extra power wiring inside the phone.

    2. phone requires very high current(300mA - 1.8A) and varies all the time compared to that a normal charger can provide, dont expect it will boot if u use a "ebay charger" or a PC USB port. i would say , most of the ebay chargers,if not all, will not be able to boot up a phone for current's sake regardless what they claim or be printed on the description. USE A RELIABLE HIGH CURRENT STEP DOWN CONVERTER, get from a powerful and reliable power source (a laptop power charger 19v, up to 3A, for example), keep monitoring the current when you boot the phone. Any car cigarette lighter socket normally can provide enough current, if it fails to boot, check the current your step down converter can provide. The step down converter i m using is just about $6-$7. not expensive one but need to find the right one(i bought more than 10, but only one useful for this purpose, they are all cheap $1-$10).

    i came across this issue when i started making my own car onboard GPS system by using an old Sony Xperia X10, then Z1, then later, tested E and Z2 for fun . currently my system evolves to an Android X86 on a normal PC platform bluetooth, wifi and onboard video recording system connected. its all just for fun.

    if you are looking for making your onboard phone boot with the engine key, dont need to worry too much about the switch on off, battery charging etc., Another idea is to use or modify a voltage step down converter(12V->5V), make its output voltage vary , say 3v-5.5v by a potentiometer (get it from an old PC speaker), then connect it to the onboard phone as a charger, you dont need to modify you phone, just change the charging voltage so as to the charging current, that means charging the phone while using the phone. if u charge more than you use , then the battery will increase when u drive,if u lower the voltage, the more u drive the more the battery decreases. u never need to take out the phone to charge. of course, you need to automate the phone on off with the engine key, to boot up GPS application automatically etc. i found this very interesting, currently an Xperia Z is running in this way, i found you need to adjust the charger voltage only once for months. theoretically, you have a balance point, always can make when u drive you car, keep the charging equal to your phone using.

    happy to share this experience with anyone interested and good luck to everyone coming across this problem.
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    1
    K
    kgbme
    Just btw., how difficult would it be to have the battery /hardware recognize when charge capacity is at 100% and have it switch-over to a mechanism that powers the device directly.

    Likewise, such a system should allow for a mobile device to function normally w/o a battery, as there are decades-old laptop computers which can do the same.. I don't get it, whatever. :/

    Same as with having: universal 1) batteries and /or 2) print cartridges (refillable, as well, ofc.)

    By now, we would have: 1) absolutely amazing (!), brilliant battery technology, if it weren't proprietary and 3rd-parties were able to manufacture batteries for all sorts of devices and be able to invest profits into r&d and 2) probably, world-wide pollution numbers could decrease by (some crazy amount, like) 1% if all, those, obsolete cartridges weren't being discarded.

    Not meaning to mix apples and oranges, but the cause and effect is completely the same: a) greed and b) failure, blah! :f
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    C
    cherudim1
    very helpful

    this forum thread was helpful! :) thanks!
    View

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