Simultaneous operation of the tablet in charging mode and OTG. How to do?

Question

Electronics

Hello. Maybe I'm writing off topic, but I did not find the appropriate section. There is a tablet lenovo tab 7a-30. The problem is that it does not support the simultaneous operation of the usb connector in otg mode and charging (if there is a solution, direct to this topic). I suppose this solution - since I don’t need a battery, you can just throw it away and solder it directly to the tablet (constant charging), I think it will work in two modes. The problem is that I'm not exactly a specialist in electrics, but if you give me ideas, then I will be able to implement them, because. hands grow from where it is necessary. I saw options on the Internet using voltage regulators, i.e. with it, an n-th number of volts is supplied to the battery controller, like a battery, and everything works. Difficulties arise here, because I would like to embody all this without a miracle regulator. There is a charger for 5V 3.4A, it must be soldered. Is there such a way and how to implement it? Attached is a photo of the battery and the location of the battery connector.

Answer 1

Buy a powerful charging controller and connect it in parallel to the battery. If there is enough power, it will both power and charge, naturally the tablet will not show charging - so it's better to take a controller with an indication.
like this https://ru.aliexpress.com/item/Free-shipping-5V-Mi...