Power supply to power sockets in India is AC 230 V, 60 Hz. Make sure that your device and the power cable can handle this, most laptop adapters are designed to handle worldwide voltage range (100V to 230V) so they should be fine, but do check to be sure.
You will need adapters so that your device cables can plug into the sockets you will see in India. You should be able to find them in most retailers who carry travel accessories or order online.
Also, keep in mind that USB port are not very common in India on wall panels, so do carry an socket.
If you do forget carrying them, you can buy them in local shop when you land.