Over time, the battery of any smartphone fails, and if it is an old device, finding a new battery can be difficult, and sometimes impossible (if it is discontinued or its manufacturer is gone, as often happens with Chinese vendors). How to return life to such a smartphone?

The battery output voltage is 3.8 volts, although 5 volts are fed from the charger to the smartphone, which are then lowered by the controller. The problem is that electricity will not flow to the controller if the battery is damaged, so the energy must be sent directly. This will require a USB cable with a cut-off micro USB port and a battery connector.



Since the battery is damaged, do not feel sorry for it, carefully cut off the contact pad, noting for yourself where the plus and minus are. Solder the red wire of the cable to the plus and the black to the minus.



Cut a parallelepiped from cardboard or other material that will fit into the battery compartment and fix the contacts so that they are sufficiently dense and stable.



Insert the contact pad into the smartphone and press it with the thing that replaces the battery. Connect the cable to the charger and turn on the smartphone.

Of course, it is better to use not a standard charger, but a laboratory power supply unit, in which voltage regulation is provided, however, the controller in the smartphone will most likely cut off extra volts and supply as much as necessary to the logic board.



Install the applicationAmpere , AccuBattery or any similar that indicates the voltage and charging current, and see if there is any overload. If the voltage is kept at 4 volts, you can use the smartphone. Carrying it with you will be problematic, but it can be useful at home.

Post has been editedbullik01 - 30.10.17, 17:35

You can cling to the battery and to the regular contacts, there is protection on temperature and overcharging, so that it can not be bypassed. But when the battery is fully charged, it will cease to apply voltage, and all 5 volts will go to the phone, which can spoil the power controller (I had experience), therefore it is better to use the phone for no more than an hour. Then continue to charge as usual, via micro usb.
All this of course IMHO.

Post has been editedDEMONKDO - 30.10.17, 18:41

DEMONKDO Thanks for the valuable information :)

It will be possible to take akum smaller in size and also steal from the wires. Then the phone will carry the norms) Here is the instruction, for exampleMicromax Q415 Canvas Pace 4G - Discussion (Post by payalnik1989 # 57328119)

Post has been editedstaryigutsul - 05.11.17, 00:26