Do I need some kind of transmitter for the bluetooth keyboard and mouse?

Question

Keyboard

I will combine two questions in one topic.
1. I need a free micro usb connector for charging (there is one on the tablet, there are no more). I want to buy a bluetooth keyboard and mouse, so that at the same time there would be a tablet on charge, and use the keyboard and mouse.
From this question: the bluetooth keyboard and mouse need some kind of transmitter that will take a single connector?
2. Is it possible to insert an AA battery into a battery-powered keyboard and mouse, or are separate keyboards and mice sold for batteries?

Answer 1

1. There are keyboards and mice without a transmitter that cling via Bluetooth;
2. You can also use batteries, the device does not care where the volts are sucked from.

Answer 2

1. If the tablet already has a built-in bluetooth adapter, then naturally, it will not be necessary to occupy the only usb.
2. Rechargeable batteries need to be bought! Otherwise, splurge on ordinary ones. There is no difference between them, except that the former are thrown into the wastebasket. And the second can be recharged and used further. If you choose, you can compare here .
3. Also, do not forget to buy a universal charger that supports both AA and mezinchik batteries.