How to run android phone without battery?

I see alot of confusion about the voltages. I'd like to clarify for those who are confused. All cell phones are lithium ion, lithium ion are all 3.7v cells. 3.7v is 0% charge. (4.2v is full charge). A 4.4v power source is needed to charge a lithium cell to 4.2v. (4.4v is actually 4.2v in a closed circuit, aka when plugged into the phone). 3.9v will provide 3.7v closed circuit (aka 0% battery) and the phone won't boot, or will turn off. So, we need an absolute minimum of 4v just for the phone to read anything other than 0% battery. Maximum voltage is 4.4v, Minimum voltage is 4v. You should use the maximum 4.4v if you can, but might be able to get away with as low as 4v. Nothing more, nothing less.

For those who couldn't get this to work on their phone, it won't work on all phones. Some phones incorporate some logic in their batteries that will check with the battery on boot up and not boot up if it detects a problem with the battery. I remember trying to directly hook up before on a sony xperia phone. It would start to boot and reboot at the same point during the boot up sequence.

Thanks... Its 2021 and still work 😂

Just followed your tutorial and it works like a charm! Thanks!

Awesome, worked like a charm, started frying the phone but it was an old phone and garbage anyways, able to turn on long enough for I needed

That charger plugged into the power outlet OMG :-O

is this the safe one,does connecting mobile with power supply continiously leads to explosion of mobile, i am little confused , please do reply

Always love seeing the journey of other entrepreneurs, keep doing what you're doing! 🚀

sounds good will try it,but ultimately i will have a root for a lower voltage charger , could save buying a battery, just bought a s5 sm g900f and no shops have one that fits

Could this work using an old charger instead of a cable?

What about the other two pins?, will the phone start without some kind of connection to these for temperature etc?

Wow that looks easy I might do that with my old lg phone thanks!

All my old unchargeables were powerful enough to Bluetooth controllers,, emulate consoles, and display on a monitor. I see an arcade machine taking form in my mind's eye😏 👍

Is there an official solution/product I can buy that does this so I don't have to mess with wires?

I've seen some ghetto ass mods but this one is right up there. Using all the wrong tools, powering the phone at the wrong voltage and wrapping the wires around those pins in a way that's basically a guarantee for them to short out. I'd consider this video a great example of how NOT to perform any mods. Get some proper tools, check what power input your phone actually needs and get a soldering iron.

Not running with diodes first i applied 2 diodes in series nothing happened then i tried 1 diode phone started but then stoped then started again process goes on then i connected directly and running well. Diode used IN4007 charger output 5v and 0.7A

That was really awesome. Now how do we mobile it bro? :D Always there to keep you in a pinch man. Haha.

How did u get the wires to stay?

I would get a cheap universal adapter that outputs 4v or the exact battery voltage, you never know what you're getting with USB, it might be too high for the device and end up damaging it.

Sorry.. seems this method will slowly destroy the phone itself coz of oversupply voltage.. normally, charging adaptor output 5v while smartphones normally maximum takes around 4.2v. U need a step down converter module for safety measure.