how to know battery status on computer...

[karmax]

i am using lipo 24 v 12 Ah battery for my robot. i want to see voltage and current rating in my comp . simply means i want to send my alll battery data serially to my comp . any body have any idea  that how can we do this... plz help me .....

[pomprocker]

implement a battery monitor sensor, and then send the data over uart

[izua]

You can't measure the battery's current rating. You can monitor instant current and sum it at every sample on your computer - to estimate how much juice it's left in your battery.

Reading a battery is a simple voltage divisor problem. The UART, on the other hand, my not be that simple. Check my website for a complete RS232/UART tutorial.