AT-Command Module Tutorial ~ How To Read Battery Status?

After AT Command Module, MDBT42Q-PAT, released, Raytac has received several feedback from developers about "How to read battery status through AT command?"

In order to help developers quickly set up the environment, the tutorial hereby is using a AT command DK board which deployed MDBT42Q-AT, to demonstrate how to work out this function.

First of all, the DK board schematic is provided in below for reference.

BT4.0 Mouse/Mice/Keyboard VS BT3.0 Power Consumption

Raytac Corporation
A BT4.0 module maker based on Nordic nRF51822 solution
www.raytac.com
Tel: +886.2.3234.0208

They best point to apply BT4.0 (BLE) solution is "Power Saving"
Though, what is the actual difference??
This is the frequent question  what many customers are interested to know.

The below chart may help everybody to understand the difference between  BT3.0 and BT4.0 (based on Nordic nRF51822) current consumption and battery life time for mouse (mice) and keyboard.

Note.1
The data listed below is just the purpose to provide as a comparison reference data based on same testing sample objectives.
Different manufacturer's products may have varied exact result and performance by individual products!

Note.2
Nordic nRF51822 has both BT4.0 and 2.4GHz RF transmission mode

Raytac Corporation

Module: MDBT40, a Nordic Approved 3rd Party Module Supplier